Ok gentlemen, as a USMC Machinist I think I can end alot of this bickering. Fisrt) The GM Gen III engines are and excelent design, I personally only have one qualm with them and that's the dumbell in the bottom of the block. Second) Titanium has the highest strength to weight ratio of ANY metal, that doesn't mean they are the absolute strongest It all depends on the amount of material and the cross grain of said material As far as all out strength, Oliver Billet rods hands down are the best
@fiatnutz what's the most hp made with an ls7 block and how much do they cost?.just wondering because a guy from accufab is making 2000+ hp with a production(lincoln mark 8 93-98 - mustang cobra 96-98)teksid 4.6l block with highly ported stock b heads!.guess i'm asking is there any production chevy block and heads that can make that much hp that's not a big block?.
@331sbf Well, Katech's Air Attack Z06 package(not street legal)is rated at 1000hp an uses the stock block. But that's the only thing stock about the engine at that level. House of Boost also made a 1300hp Z06 using the stock block and heads. As for cost, you're looking at a MINIMUM of 50k(Katech), on top of what you paid for the Z06 in the first place.
If you want 2000+hp, you'll have to go with the LSX crate motor, which is advertised as being able to reliably handle some 2500hp.
Suspect29, nope didnt know. Maybe the design was fords, but ford never hp out of it. For a long time chevy motors made awesome power, and then some with minor bolt-ons. Can u say the same with fords 4.6,
No. I know now ford has the new 5.0, my respects.
@SUSPECT29 seriously dude, ford did not design the LS1! i looked up your so-called thread on ls1tech. it's about adapting the heads to fit a SBF, not about the motor being a ford! even then there are extensive modifications that need to be made for it to work because nothing matches up! they don't bolt up as you suggest! do you really know anything about which you are speaking?!? and don't turn the question back around on me because my reading comprehension is fine!
why so many dislikes ? just because this ls7 blew doesn't mean ls7 engines are crap ... it was a misfortune and mr fiatnuts has kindly made a video of what it looks like... show some appreciation and like the video.
It looks like a piston broke. Does anybody know off hand if the LS-7 had oil squirters aimed at the back of the pistons? That's the only I can see that oil pressure would be a problem. Considering the damage.
I looked it up just now. No, it doesn't have oil squirters. The dry sump system is intend to collect all the oil and keep it under pressure during hard cornering.The only explanation I can see now is that the thing that collects the oil got uncovered somehow, if oil pressure was the issue. Of course the rules of fluid mechanics might allow the heads to fill up with oil at 2+g's of cornering... this being a road racing corvette. So I guess it's possible...
Typical crappy Chevy motors. They havent been worth a crap since 1960s era. They are JUNK disposable motors, with each having major flaws like the knuckleheads who actually buy Chevy's today. Total junk. The new camaro which is supposed to reflect their modern efforts to FINALLY ship out quality products is even a piece of garbage. LOL, they will never get it right. Even with tons of OUR BAIL-OUT money they cant get it right. SAD just like Chevy owners. SAD, SAD, SAD, SAD.
@SargentBlah cool story bro. I see u have way to much time on your hands to comment on this video when no one gives a fuck whether you hate chevy or not.
@mikeb1444 not quite. they were mostly the same from the 50s or whenever they were introduced to 92, when the lt1 came out. it was quite different, and considered a new generation. then in 97, the ls1 came out, and the classic small block chevy died completely. except for the same rough displacement, and the pushrod V8 configuration, it was entirely different.
The difference between the LT1 and the original SBC is that the LT1 has the Heads cooled first. The LT1 also had a short ram intake manifold. The Truck 350 was a normal small block that had the Rev limiter set near 4800 RPM and it had a more conventional intake manifold. The 4.3 V6 is based on the LT1 and it's in my truck. Rev limiter is at 6K, shifts at 5800RPM, but the intake isn't like the one on the LT1.
Those are the main differences. Small block internals will interchange. The only things that don't interchange are the cylinder heads. I hear that the rear main seal is different though...
@SargentBlah very detailed. although totally false and probably the worst opinion i have ever heard in my life due to not knowing anything about chevy or their cars. but hey. just my and every1 else's opinion that replyed to this shit
@dc5kid gtfo, watch a season of alms gt2 and see how the corvette destroys the competition. Its not just because its faster than all the other cars but because its much more reliable, and when it used direct injection it was so much faster because of fuel economy (less pit stops) that direct injection was outlawed on the c6r
so you're saying that the engine ran through 11L of oil (the reservoir's capacity) all inside of ONE corner? 1 g lateral acceleration is not going to affect oil film strength - it's under hundreds of g's just spinning. don't you have an accumulator pump in case of oil pressure loss? pressure sensitive engine shut off?
you'd better find the actual cause of the failure or you will repeat it. please share it when you find out.
What was your oil pressure at the gauge when the rod broke, and what rpm's were you turning it? I'm clearencing an L76 right now to hold boost and 7K rpm's while maintaining good oil pressure. I do not wan this to happen to my new Callies/Wiseco bottom end set up.
Oil shortage will not break a rod. What breaks a rod is a detonation with rice fuel (methanol) as it contained more immunity to detonation -->higher compression --> more released power -->higher effect in case of detonation . Also it is not temperature but a super sonic explosive mechanical wave that result form detonation.
(sorry) that the dry sump system would eliminate centrifugal force induced oil starvation. The sheer amount of oil combined with a carefully designed reserve tank would need to be faced with situations I can't think would ever occur. Any ideas?
@fiatnutz - I agree with makaveli, the dry sump is designed to overcome this problem and it pumps oil directly from a seperate oil tank, it doesnt have a wet sump where centrifugal force could cause an air pocket to collect due to running the oil pump dry. the owner must have been low on oil.
@fiatnutz - I agree with makaveli, the dry sump is designed to overcome this problem and it pumps oil directly from a seperate oil tank, it doesnt have a wet sump where centrifugal force could cause an air pocket to collect due to running the oil pump dry. the owner must have been low on oil.
@FxsX24 wrong,,,all a dry sump really does is scavage the oil out of the pan [to help eliminate windage] and put that oil in a al. tank instead of holding the oil in the hot pan,,,,it's not preasurized ..the oil pump then draws the cooled oil from the bottom of the tank and pushes it threw the normal oil passages in the block/I've built plenty of drysump sprint car motors
Conventional wet sump can suffer two main problems, oil surge away from pickup and oil slashing around causing windage losses.
A dry sump scavenges oil from the sump (and sometimes head(s) to vbe stored in a separate tank that's designed to allow any air in the oil to separate out and, primarily, to ensure a constant supply of oil to the oil pump section that supplies oil to the engine.
Road racing - that could happen in a racing. Do you show us how you'll restore this engine? This would be educational and not how to destroy like betterwrench...
I had my 2000 Corvette do the same thing. It blew at 18,000 miles at 4100 rpm when I was accellerating to get onto the freeway. I did get a new engine from Chevy and they didnt say much other than..."Here are the keys to the rental car and we will have it fixed in a week." I think they were hiding the fact that maybe they(GM) were expierenceing some issues with these engines comming apart.
Bottom end of LS-7 is good for 400 H.P. this is the result of anything more after just a few minutes of use regardless of whether it is at one time like road racing or over several months of drag racing. We love LS-7s because we get to build them often at a grand price. It is not uncommon to see the block split right down the middle. Lingenfelters are the worse. LS-7 is a piss poor design as a stock motor. Adding horsepower via any means is certain destruction.
@robby844 The lubricity characteristics and viscosity of Lucas oil, make it an excellent oil pressure stabilizer. Its thick, and sticks to metal in an almost glue-like way. Yet its slippery as hell. Momentary, and near complete losses of oil pressure won't starve the bearings, and burn them. This is simply because the characteristics of Lucas oil will maintain a film of lubrication, even when the supply is cut off.
@robby844 What are you getting at? The strain on the pump shaft, due to increased oil pressure? You're not supposed to put that damn much in the crankcase.
@madtownmadman Lucas and their product reps do alot of chirping about this very subject, and in reality, the benefit of their oil sticking to surfaces to protect them during losses of oil, is very momentary.
there are lots of oil additives that make similar claims, and the truth is, this benefit lasts for fractions of a second.
@fiatnutz would it be wise to have a pressure gauge/sensor permanently connected to the oil supply ports so that you can keep en eye on it at all times or does oil pressure vary significantly across the system? or does it only take a microsecond of lost pressure for something like this to happen?
a lot of good that dry sump oiling system did for it. I'll bet chevy engineers slaved night and day to design that system and then low and behold, it DOESNT WORK... Time to invest their time in something more productive.
I had the same thing happen to an LS6 - at idle. Mechanic at dealership said he'd never heard of one failing. Took weeks to get a replacement. Rod end was protruding through crankcase.
There are a lot of good points brought out here but no one has said anything about the main one " $ ". For the amount money you spend to build a good strong reliable LS your lucky to be past the crank on the Modular. I've also seen way more ford guys come to the shop with parts baskets that never got any sign of self destruction before the bang, most of the chevy guys complaint of a ping and a fix unless they are dumb asses and ignore it.
Looking at that engine reminds me of a time in an F1 race when one of the Ferraris dropped out with what was obviously a failure like this. When they were asked about it, they said the car dropped out with "electrical trouble". When asked to explain further, the mechanic said the piston came through the top of the block and knocked the distributor off...
@almostfm It's funny that this reminds you of an F1 engine because there is no comparison. That Ferrari engine was probably spinning at 18,000 rpm and making 900 hp. That's a pretty far cry from this engine, which weighs twice as much, makes about half the power, at around half the rpm and doesn't have to deal with 4G turns that an F1 engine would.
@almostfm Yeah I figured that was the case, but I think the reason your comment has so many thumbs up is because of all the GM fanboys that think their LS7 is in some way superior to an F1 engine. Just thought I'd point out the differences between the two situations.
you can actually talk to the guy whom built it. the corvette factory has them put their signature on them. the LS7 is a great engine. you cant name a better engine that the LS family of engines.
yeah nice, i love how every engine i see with its "legs out of bed" snaps the conrod in half . Nice. Ive seen a CAT V16 mining truck engine throw 2 legs out of bed half way up the incline.... that was a mess
looks like all you need is some new gaskets and maybe some zip ties to hold them there pistons in place wouldn't want one to come apart again it might total the block :)
those cars have dry sump oiling, what happened is it had a malfunction and quit working causing this to happen, my boss owns a 2008 with a 427 small block ls7 and thiss exact thig happened except the oil from the block got on the exaust and cought the entire car on fire : /
that must have made the track interesting for the guys behind him
gunter099 1 month ago
A little lucas oil ought to fix it right up.
mrwindsorpodomous 1 month ago
Looking at the discoloration of the adjoining rod, I'd say "oil starvation".
youpickone460 1 month ago
that is why i stay with ford.
thepaul302 1 month ago
Lol major malfunction. No shit
mikespike502005 1 month ago
why did it take chevy 42 years to make a sbc y block and non siamese heads?
331sbf 2 months ago
Slap on some JB Weld and that'll be good as new! Seriously though, that engine must have been running pretty hard.
AandWProductions 2 months ago
so u fixed it right... lol jk
TheZenerDiode 2 months ago
ouch
sktrsam2 3 months ago
Ok gentlemen, as a USMC Machinist I think I can end alot of this bickering. Fisrt) The GM Gen III engines are and excelent design, I personally only have one qualm with them and that's the dumbell in the bottom of the block. Second) Titanium has the highest strength to weight ratio of ANY metal, that doesn't mean they are the absolute strongest It all depends on the amount of material and the cross grain of said material As far as all out strength, Oliver Billet rods hands down are the best
MudBogginRoss 3 months ago
i am courius to know , is that a yellow corvette that failed while a drag racing ?
ElvisKeAm 3 months ago
@ElvisKeAm yes, you can tell the engine color by the size of the hole in the side of the block, I. E. the yellow ones go faster...
jetstreamblueZ06 3 months ago
titanium rods r not as strong as 4340 alloy rods? I think it's double the weight of the titanium? is this true?
AntDX316 4 months ago
Yep... that's a catastrophic failure...
Wahappen?
Busted rod? Why not explain a bit to us. I mean, you bothered to make a vid for it.
pimpb0tt 4 months ago
Uncle Red? Is that you?
BroMoShow 4 months ago
This comment has received too many negative votes show
Thats a viper engine right?
LilSaint001100 4 months ago
@LilSaint001100 - LS7 from a Corvette
fiatnutz 4 months ago 14
@fiatnutz what's the most hp made with an ls7 block and how much do they cost?.just wondering because a guy from accufab is making 2000+ hp with a production(lincoln mark 8 93-98 - mustang cobra 96-98)teksid 4.6l block with highly ported stock b heads!.guess i'm asking is there any production chevy block and heads that can make that much hp that's not a big block?.
331sbf 2 months ago
@331sbf Well, Katech's Air Attack Z06 package(not street legal)is rated at 1000hp an uses the stock block. But that's the only thing stock about the engine at that level. House of Boost also made a 1300hp Z06 using the stock block and heads. As for cost, you're looking at a MINIMUM of 50k(Katech), on top of what you paid for the Z06 in the first place.
If you want 2000+hp, you'll have to go with the LSX crate motor, which is advertised as being able to reliably handle some 2500hp.
WelcomeToCarnate 1 month ago
@LilSaint001100 seriously?
1SirCarlton 4 months ago
Suspect29, nope didnt know. Maybe the design was fords, but ford never hp out of it. For a long time chevy motors made awesome power, and then some with minor bolt-ons. Can u say the same with fords 4.6,
No. I know now ford has the new 5.0, my respects.
93foxwcubes 5 months ago
Sargentblah, just cuz u have a mouth u shit out of it. Lt1 & ls1 are engines of gods compared to that piece of shit motor 4.6
Ford fed to yall for 15 years!!! U talkin down on a great motor and ford has nothing to back it up with unless its supercharged. What a fool u are.
93foxwcubes 5 months ago
@93foxwcubes you do realize that Chevy ls motors were originally Fords design right?
SUSPECT29 5 months ago
@SUSPECT29 hear that in a mustang forum? sorry bud, the LS is all chevy. ford went overhead cam, remember?
yodibrodi 4 months ago
@yodibrodi its also on ls1tech the ls motors are a ford designed motor ever wonder why the heads will fit on a 351 and 302
SUSPECT29 4 months ago
@SUSPECT29 seriously dude, ford did not design the LS1! i looked up your so-called thread on ls1tech. it's about adapting the heads to fit a SBF, not about the motor being a ford! even then there are extensive modifications that need to be made for it to work because nothing matches up! they don't bolt up as you suggest! do you really know anything about which you are speaking?!? and don't turn the question back around on me because my reading comprehension is fine!
yodibrodi 4 months ago
@SUSPECT29 they will bolt on a 351 about as easily as it will bolt on a 6-71 detroit....
saying that its amazing how it will work on a ford small block, after EXTENSIVE machining just shows you how much better the ls design is
mageac 4 months ago
@SUSPECT29 the LS design was mand and perfected by chevrolet motor co. not ford.
rangerRZR1 4 months ago
why so many dislikes ? just because this ls7 blew doesn't mean ls7 engines are crap ... it was a misfortune and mr fiatnuts has kindly made a video of what it looks like... show some appreciation and like the video.
blahblop123 5 months ago
is that all should show a better look than that.
tunastrike11 6 months ago
bit of duct tape and she will be right
luvbigexplosions 6 months ago 3
Can Humiliate Every Vehicle Rustangs or Lincolns Every Time
ChevyGuyLS9 6 months ago
@ChevyGuyLS9 wtf i hope you didnt hurt your brain coming up with that one...
ilovegoatsecks 5 months ago
That was ina corvette
suzuki4life7 6 months ago
It looks like a piston broke. Does anybody know off hand if the LS-7 had oil squirters aimed at the back of the pistons? That's the only I can see that oil pressure would be a problem. Considering the damage.
mikeb1444 6 months ago
@mikeb1444
No they don't!
ShawnScaggs 6 months ago
@ShawnScaggs
Thanks.
mikeb1444 6 months ago
@mikeb1444 being a dry sump, i think it has to. wet sump engines get oil splashed onto thre cylinder walls for lubrication. a dry sump cant do that
pepene93 5 months ago
@pepene93
I looked it up just now. No, it doesn't have oil squirters. The dry sump system is intend to collect all the oil and keep it under pressure during hard cornering.The only explanation I can see now is that the thing that collects the oil got uncovered somehow, if oil pressure was the issue. Of course the rules of fluid mechanics might allow the heads to fill up with oil at 2+g's of cornering... this being a road racing corvette. So I guess it's possible...
mikeb1444 5 months ago
some gorilla glue will fix that over night
HaamSammich 7 months ago
If it was a cat-astrophic failure, the CSI people would have found cat hair in the engine oil.
seapeddler 7 months ago
Typical crappy Chevy motors. They havent been worth a crap since 1960s era. They are JUNK disposable motors, with each having major flaws like the knuckleheads who actually buy Chevy's today. Total junk. The new camaro which is supposed to reflect their modern efforts to FINALLY ship out quality products is even a piece of garbage. LOL, they will never get it right. Even with tons of OUR BAIL-OUT money they cant get it right. SAD just like Chevy owners. SAD, SAD, SAD, SAD.
SargentBlah 8 months ago
@SargentBlah cool story bro. I see u have way to much time on your hands to comment on this video when no one gives a fuck whether you hate chevy or not.
xxquikscopedx 7 months ago
@SargentBlah so what do you like ford hahah
cummins59ish 7 months ago
@SargentBlah D
Dude, the small block and big block were the same from introduction until '98.
mikeb1444 6 months ago
@mikeb1444 not quite. they were mostly the same from the 50s or whenever they were introduced to 92, when the lt1 came out. it was quite different, and considered a new generation. then in 97, the ls1 came out, and the classic small block chevy died completely. except for the same rough displacement, and the pushrod V8 configuration, it was entirely different.
pepene93 5 months ago
@pepene93
In '98, you could still get a normal 350 in a pickup. I don't know if they had the reverse cooling like the LT1 though.
mikeb1444 5 months ago
@mikeb1444 it wasnt actually an lt1. it was similar, but not the same engine. as far as i know, the lt1 was never put in a truck
pepene93 5 months ago
@pepene93
The difference between the LT1 and the original SBC is that the LT1 has the Heads cooled first. The LT1 also had a short ram intake manifold. The Truck 350 was a normal small block that had the Rev limiter set near 4800 RPM and it had a more conventional intake manifold. The 4.3 V6 is based on the LT1 and it's in my truck. Rev limiter is at 6K, shifts at 5800RPM, but the intake isn't like the one on the LT1.
mikeb1444 5 months ago
@mikeb1444 its not the only difference. it was a different engine
pepene93 5 months ago
@pepene93
Those are the main differences. Small block internals will interchange. The only things that don't interchange are the cylinder heads. I hear that the rear main seal is different though...
mikeb1444 5 months ago
@SargentBlah very detailed. although totally false and probably the worst opinion i have ever heard in my life due to not knowing anything about chevy or their cars. but hey. just my and every1 else's opinion that replyed to this shit
rangerRZR1 4 months ago
strange, ls7s are extremely reliable when it comes to racing...
n9athan 8 months ago
what did you expect when you bought a chevy ?
dc5kid 8 months ago
@dc5kid gtfo, watch a season of alms gt2 and see how the corvette destroys the competition. Its not just because its faster than all the other cars but because its much more reliable, and when it used direct injection it was so much faster because of fuel economy (less pit stops) that direct injection was outlawed on the c6r
n9athan 8 months ago
@n9athan and handles better
rangerRZR1 4 months ago
so you're saying that the engine ran through 11L of oil (the reservoir's capacity) all inside of ONE corner? 1 g lateral acceleration is not going to affect oil film strength - it's under hundreds of g's just spinning. don't you have an accumulator pump in case of oil pressure loss? pressure sensitive engine shut off?
you'd better find the actual cause of the failure or you will repeat it. please share it when you find out.
cstavro 8 months ago
a little jb weld and it'll be good as new
alderaforall 8 months ago
What was your oil pressure at the gauge when the rod broke, and what rpm's were you turning it? I'm clearencing an L76 right now to hold boost and 7K rpm's while maintaining good oil pressure. I do not wan this to happen to my new Callies/Wiseco bottom end set up.
IDRIVEAG8GT 9 months ago
Oil shortage will not break a rod. What breaks a rod is a detonation with rice fuel (methanol) as it contained more immunity to detonation -->higher compression --> more released power -->higher effect in case of detonation . Also it is not temperature but a super sonic explosive mechanical wave that result form detonation.
it is my 0.02$
NissanAltima2005 10 months ago
LOL those rods are titanium.
undercoverLsX 10 months ago
Are you sure the engine is the problem? maybe its the battery that died? no?
jeetendrag10acc2 11 months ago
Well there's your problem.
vfrmaverick 1 year ago
A block that look like that is not something you try to repair you buy a new or used one right?
dtiydr 1 year ago
Thats thing ready to go, Less cylinders higher mpg's lol...
swaboda325 1 year ago
why would anyone buy this video for 99 cents?
jazar 1 year ago
huh, try fixing that with pinball machine parts!
rozziboy20 1 year ago
thats a typical chevy scenario.
pierce4484 1 year ago
Shit happens!
ballucanb1 1 year ago
I don't have the words for how bad that sucks!
But in the words of Mythbusters.... "Well theres your problem!"
Chevypower265 1 year ago
jb weld and duct tape
screaming355 1 year ago
did this happen with the stock dry sump system or was it upgraded?
nighthawk175 1 year ago
WOW! thanks, i couldnt tell by the huge hole in the block
xlordxseekoeix 1 year ago
@Boogonomotry 505 hp
idontcare80 1 year ago
nothin some gorilla tape cant fix
TheRiseagainstfan 1 year ago
(sorry) that the dry sump system would eliminate centrifugal force induced oil starvation. The sheer amount of oil combined with a carefully designed reserve tank would need to be faced with situations I can't think would ever occur. Any ideas?
wantapgt 1 year ago
@fiatnutz I as well was under the impression th
wantapgt 1 year ago
I am curious the Z06 comes with a dry sump system...how did the bearings lose oil pressure in the corner? Thanks
makaveli200369 1 year ago
@makaveli200369 - Centrifugal force.
fiatnutz 1 year ago
@fiatnutz - I agree with makaveli, the dry sump is designed to overcome this problem and it pumps oil directly from a seperate oil tank, it doesnt have a wet sump where centrifugal force could cause an air pocket to collect due to running the oil pump dry. the owner must have been low on oil.
3874916402 1 year ago
This has been flagged as spam show
@fiatnutz - I agree with makaveli, the dry sump is designed to overcome this problem and it pumps oil directly from a seperate oil tank, it doesnt have a wet sump where centrifugal force could cause an air pocket to collect due to running the oil pump dry. the owner must have been low on oil.
3874916402 1 year ago
@fiatnutz
That doesn't make sense. That shouldn't happen with a dry sump system.
CoChicken1337 1 year ago
@fiatnutz bull shit thats why they have a dry sump...... so that dont happen dumb ass
1991blazer1 1 year ago
@fiatnutz the motor was made not to blow up for that reason..
mattn314 1 year ago
@fiatnutz
um a dry sump system in designed to counter centrifugal force. by storing the oil in a pressurized system.
FxsX24 1 year ago 12
@FxsX24 wrong,,,all a dry sump really does is scavage the oil out of the pan [to help eliminate windage] and put that oil in a al. tank instead of holding the oil in the hot pan,,,,it's not preasurized ..the oil pump then draws the cooled oil from the bottom of the tank and pushes it threw the normal oil passages in the block/I've built plenty of drysump sprint car motors
ted850760 3 months ago
Comment removed
imacowtipper1 2 months ago
I work for rick case chevy and i agree. for the most part that's accurate.
imacowtipper1 2 months ago
@FxsX24
Um nope.
Conventional wet sump can suffer two main problems, oil surge away from pickup and oil slashing around causing windage losses.
A dry sump scavenges oil from the sump (and sometimes head(s) to vbe stored in a separate tank that's designed to allow any air in the oil to separate out and, primarily, to ensure a constant supply of oil to the oil pump section that supplies oil to the engine.
The tank is not pressurized.
GordonWG1 2 months ago
@makaveli200369 ive heard a conrod going through the side of the engine block can lower oil pressure slightly, but only with a dry sump
thetrolone 1 year ago
oh yeah i'm gonna go swap my shitty rotary engined RX7 with this LS engine!!!!
hahahaah no.
chabbalato 1 year ago
well theres your problem
mustang50dominates 1 year ago
Road racing - that could happen in a racing. Do you show us how you'll restore this engine? This would be educational and not how to destroy like betterwrench...
MowagW200 1 year ago
blues brothers / its thrown a fuckn rod
aussi3212 1 year ago
damn, did that throw a rod and the rod go thru the side of the block or what!?
dnl5649 1 year ago
I had my 2000 Corvette do the same thing. It blew at 18,000 miles at 4100 rpm when I was accellerating to get onto the freeway. I did get a new engine from Chevy and they didnt say much other than..."Here are the keys to the rental car and we will have it fixed in a week." I think they were hiding the fact that maybe they(GM) were expierenceing some issues with these engines comming apart.
scottracin 1 year ago 3
@scottracin err your LS1 is a lot different than the LS7.
Wopadas 1 year ago
Bottom end of LS-7 is good for 400 H.P. this is the result of anything more after just a few minutes of use regardless of whether it is at one time like road racing or over several months of drag racing. We love LS-7s because we get to build them often at a grand price. It is not uncommon to see the block split right down the middle. Lingenfelters are the worse. LS-7 is a piss poor design as a stock motor. Adding horsepower via any means is certain destruction.
digger500 1 year ago
@digger500
isn't the stock output of an LS-7 ~500 hp?
seraph1m87 1 year ago
@digger500 you clearly have no idea what youre talking about, the motor stock comes with 505 hp the internals are titanium
deadfaithful 1 year ago
mind = blown
12agent47 1 year ago
im about to cry
JuanPapaNicolao 1 year ago
so how was that done? Pretty sure you couldn't put enough boost to throw a rod...usually the pistons melt first because of detonation.
To big a hit of nitrous or was it thrown into 1st gear @ 100mph?
Or was the owner a complete idiot and forget to put oil in the block?
halohadel 1 year ago 2
This was a race engine and it blew up coming out of a corner, not enough oil pressure.
fiatnutz 1 year ago 9
ahh figured it would be an oiling issue
halohadel 1 year ago
@fiatnutz That there, is reason enough for me to run Lucas oil.
madtownmadman 1 year ago
Comment removed
robby844 1 year ago
@robby844 The lubricity characteristics and viscosity of Lucas oil, make it an excellent oil pressure stabilizer. Its thick, and sticks to metal in an almost glue-like way. Yet its slippery as hell. Momentary, and near complete losses of oil pressure won't starve the bearings, and burn them. This is simply because the characteristics of Lucas oil will maintain a film of lubrication, even when the supply is cut off.
madtownmadman 1 year ago
Comment removed
robby844 1 year ago
@robby844 What are you getting at? The strain on the pump shaft, due to increased oil pressure? You're not supposed to put that damn much in the crankcase.
madtownmadman 1 year ago
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robby844 1 year ago
@madtownmadman Lucas and their product reps do alot of chirping about this very subject, and in reality, the benefit of their oil sticking to surfaces to protect them during losses of oil, is very momentary.
there are lots of oil additives that make similar claims, and the truth is, this benefit lasts for fractions of a second.
impreziv 1 year ago
@fiatnutz Yup the black crank journal is the give away- lack of oil, got hot and seized. Should have got a baffled sump I guess.
fordv8man 1 year ago
@fiatnutz would it be wise to have a pressure gauge/sensor permanently connected to the oil supply ports so that you can keep en eye on it at all times or does oil pressure vary significantly across the system? or does it only take a microsecond of lost pressure for something like this to happen?
i would want to see this happen to my race motor
brendanraymond 1 year ago
a lot of good that dry sump oiling system did for it. I'll bet chevy engineers slaved night and day to design that system and then low and behold, it DOESNT WORK... Time to invest their time in something more productive.
bigorangetrucker 9 months ago
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robby844 1 year ago
@robby844 engine/block same diff
no oil = bye bye rods
halohadel 1 year ago
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robby844 1 year ago
@robby844 wow why the hostility?
halohadel 1 year ago
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robby844 1 year ago
@robby844 you gotta have oil in the engine....
block engine...same diff
halohadel 1 year ago
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robby844 1 year ago
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robby844 1 year ago
Someone just got themself a new boat anchor.
Ih8stupidhumans 1 year ago
every GM engine is a major malfunction...
bigorangetrucker 1 year ago
fake
latintude7819 1 year ago
looks like it threw a rod
corvettels9 1 year ago 2
how the fuck did the happen? was it over boosted?
InitialDirt 1 year ago
it was electrical.....a conrod knocked the alternator off..... :)
mikxr 2 years ago 2
needs new rod bearings lol
troy5251 2 years ago
i bet it still runs
svmetalman09 2 years ago
not verry likely!!! not with that damage!!
subiemon 2 years ago
This has been flagged as spam show
dont worry its a chevy
svmetalman09 2 years ago
ok there is a big hole in the block the crank has severe damage and one of the connecting rods is toast, but it will run yeah!!
subiemon 2 years ago
now your thinking on the right track
svmetalman09 2 years ago
incredible. LS7's are amazingly resiliant. I've built a couple and never had the least bit of trouble. This blows my mind.
weaverracing96 2 years ago
lol needless to say... this info was totally uneeded all one had to do was look at the block and see oh look theres a huge chunk missing!
jvallow 2 years ago
I had the same thing happen to an LS6 - at idle. Mechanic at dealership said he'd never heard of one failing. Took weeks to get a replacement. Rod end was protruding through crankcase.
glashoppah 2 years ago
I don't give a shit about catastrophic or not. A new mill please...
radnitzku 2 years ago
ten8goa wut good is rod bearings gonna do u if ur blocks got a big chunck missin on it? lmao get a whole new motor is the answer lol
younggun974 2 years ago
Cool teeth!
radnitzku 2 years ago
why do so many people think its nice to have glowing teeth!!
tpvalley 2 years ago
Does this information giving make you feel intelligent?
radnitzku 2 years ago
Put some new rod bearings in and it will be fine
ten8goa 2 years ago
Titanium rods cut right through the block when they get loose.
AmericanThunder 2 years ago
Hey a little JB weld & it's good as new !
F4cPhantomII 2 years ago 48
@F4cPhantomII hahahahaha that made my day, my dad screams about JB weld and how they use to fix motors with that, lol that suff is awesome though
pntba11er16 2 years ago 2
@F4cPhantomII JB weld is for suckers.......i use authentic "crazy glue"
jsaulgodoy 1 year ago
a couple sleeves and itll be fine...
superkindonmymind 2 years ago
There are a lot of good points brought out here but no one has said anything about the main one " $ ". For the amount money you spend to build a good strong reliable LS your lucky to be past the crank on the Modular. I've also seen way more ford guys come to the shop with parts baskets that never got any sign of self destruction before the bang, most of the chevy guys complaint of a ping and a fix unless they are dumb asses and ignore it.
309racer 2 years ago
MMMmmmm... toasty crankshaft
Bamchucknorris 2 years ago
Looking at that engine reminds me of a time in an F1 race when one of the Ferraris dropped out with what was obviously a failure like this. When they were asked about it, they said the car dropped out with "electrical trouble". When asked to explain further, the mechanic said the piston came through the top of the block and knocked the distributor off...
almostfm 2 years ago 60
they didnt lie.....
Aleksa809 2 years ago
@almostfm It's funny that this reminds you of an F1 engine because there is no comparison. That Ferrari engine was probably spinning at 18,000 rpm and making 900 hp. That's a pretty far cry from this engine, which weighs twice as much, makes about half the power, at around half the rpm and doesn't have to deal with 4G turns that an F1 engine would.
idontcare80 1 year ago
Sorry, less than half the rpm.
idontcare80 1 year ago
@idontcare80 I wasn't comparing the two engines. I was comparing this engine failure (rod through block) with the Ferrari failure (rod through block)
almostfm 1 year ago
@almostfm Yeah I figured that was the case, but I think the reason your comment has so many thumbs up is because of all the GM fanboys that think their LS7 is in some way superior to an F1 engine. Just thought I'd point out the differences between the two situations.
idontcare80 1 year ago
@idontcare80 hah no ls7 can compete with an F1 engine or block
bobwatters 1 year ago
@almostfm lol :P
xNISSANxDRIFTx 1 year ago
@almostfm jb weld duct tap will work too
copleygsxr 1 year ago
road racing my ass!! you meant street racing
realcracker1 2 years ago 3
might is just say.... PWNED!!!
AlchemistHawk 2 years ago
Well that's your problem right there, the engine is blown.
helionrage 2 years ago 5
hahaha
ezcondition 2 years ago
Some plastic padding and it will purr like a kitten in no time for sure..
dtiydr 2 years ago
you can actually talk to the guy whom built it. the corvette factory has them put their signature on them. the LS7 is a great engine. you cant name a better engine that the LS family of engines.
BetoG34 2 years ago
Must have been a Monday LOL
williamsportwrestler 2 years ago 5
indeed
kinggsalas 2 years ago
chicken you got that from viva la bam lol
B2RENNEN 2 years ago
Dude, we can fix that. My dad's a TV repairman and has an awsome set of tools!!
chickeneggs4u 2 years ago 3
Spicoli! Nobody can fix this! My brother's gonna kill us! He gonna shit!
sakuraknight9274 2 years ago
typical GM =-P
Marshall7302 2 years ago
yeah nice, i love how every engine i see with its "legs out of bed" snaps the conrod in half . Nice. Ive seen a CAT V16 mining truck engine throw 2 legs out of bed half way up the incline.... that was a mess
MrBenCleaver 2 years ago
C'mon John weld that block up!(LOL) Yeah right!
32spitzer 2 years ago
It'll buff out
caniwitech 2 years ago 3
lol
SkinnyPimpYYZ 2 years ago
thats something that Gorilla Glue can fix...
bigorangetrucker 2 years ago 2
looks like its LSX time!
rmm2424 2 years ago 2
looks like all you need is some new gaskets and maybe some zip ties to hold them there pistons in place wouldn't want one to come apart again it might total the block :)
94civiclxgrey 2 years ago
those cars have dry sump oiling, what happened is it had a malfunction and quit working causing this to happen, my boss owns a 2008 with a 427 small block ls7 and thiss exact thig happened except the oil from the block got on the exaust and cought the entire car on fire : /
CraneCamsRacing 2 years ago