1999 4.3L S10

[BOOMymon]

I JUST FEEL IN LOVEim also building up a 4.3,props to you man beautiful truck

[Runkleforskin]

estimated 400 hp = 190 like factory :)

[pottsisback]

where can i get that roll pan bumper in summit white color ?

[bamf1994]

feelin lazy or just full of shit????

[Runkleforskin]

@bamf1994 I vouch full of shit. Trust me, I know from experience with 2 4.3 litre s10's, there is NO WAY you can get 400 hp without power adder. This kid is BS all the way, it isn't even cammed. Its an S10 (or his dad's) with exhaust and thats it.

[s154x4]

that thing sounds mean

[Seansterification]

Alright I have a 93 S-10 with the TBI 4.3 Im planning on putting a stage 1 mild cam with roller lifters I got it dynoed at 174 HP just cause I advanced the timing and Im running a 40 series flow with no CAT, what cam would you suggest I get that I wouldnt have to get a stall converter. Also while I have the engine torn down Im putting an Eagle rotating assembly and eventually getting a T3T4 turbo for it, but before the turbo it got an estimate on HP after the rotating assembly anyone?

[01xvortec]

nice ride, i got a built 4.3 myself....how big of a cam is it?

[meagleycreep]

nice truck bro! I left you a video response with the exhaust note of a 314hp 4.3

[meagleycreep]

I have a ton of stuff done to mine and I don't think I am anywhere near the 400 mark.. just sayin.. I left a video response.. nice truck tho.. I bet it is hard to get power in cali with all the regulation..

[juniorgmcsierra]

i could see u getten 400 hp out of it my 2007 gmc sierra 4.3l is putn out rite at 300 an im bout to put 64cc heads on it witch will make it put out 356 plus tha horeses im getn wit tha cold air intake throttle body spacer an tha true dual magnaflow exsaust system so its easy to make 400hp.....

[kreigsmann]

400 hp ......no

[rocker85675]

if its a 4.3 then thiers NO WAY its makin 400hp, 300 would be hard to make, 400, imposible

[blazinloud]

@rocker85675 theres a 4.3 on youtube making over 1100hp, im sure 400 is very possible

[rocker85675]

@blazinloud and im sure you can find one that makes 1500 horse's, 100.000 grand later. i'll say it again, along with just about everyone that replys to your vid, ITS NOT MAKING 400 HP! and so what if its not? who cares??

[blueolds01]

after reading over what you again, its deff not making 400 horse. why do you need a forged crank?? i dont believe anything anymore with out dyno sheets or quarter mile times to back it up. 14.6 is only good to about 210 at the wheels, maybe.

[soldierboy425]

but he has a stickers!!! don't you know every sticker makes 50 horse power

[stiehler1117]

garbage.

[awboyle]

BULLSHIT!!!

[Chevypickups1993]

i smell it too. haha

[zxvcw]

what are all mods you've done to it im wanting to sup up my 4.3l

[jndtieon]

ive built my fair share of 4.3's and not to be rude but i call bull shit on the 400hp. my current s10 is a 1998 supersport with a comp custom grind .501in .513ex lift & 266/276 duration 114 lobe sep. and a 8psi supercharger and the engine is built to the nuts! and i'm only making 328hp at the crank. it would be sweet if you could make that much power but i don't believe it.

[weewoodeal]

me too an base that own on my own build an knowin how hard it is to do that to a 4.3 with out runnin boost

[krazycardude]

maybe hes foolin us...maybe his daddy put a v8 in it and its NA and stuff haha thats bout the only way he could get 400hp without a super or turbo on it...

[summitclinton]

that thing is real sick good job man!

[vettari]

what kind of muffler is that she sounds good

[kermit12191]

nice work, but I would hate to inform you that you have maybe 300 hp... unless you have a bowtie block and super trick 18 degree bowtie heads... and about $10k+ in your engine

[moloch699]

Love this sound!

[EatPez]

How do you get an estimated 400hp from your set up? What has been done to the engine?

[Lukedawg1984]

sounds mean as hell Love those 4.3's You can make them mean as hell with 350 stuff

[1981qrycher]

that truck sounds mean. i bet people think its a V8,huh? the vortec 4.3s have great potential. i'm working on mine. gonna get my ECM programmed next week.check out my vid,leave a comment let me know what u think. again, ur truck sounds awesome. 4.3 POWER!!!

[XxsicnessxX]

When you get the ECM programmed, put it on a dyno. You'll notice after 4500-4800 rpm the power band drops. To fix that you should get a true dual timing chain, the updated fuel injectors, and high compression springs. After that you'll notice a huge increase in power on all ends.

[blueolds01]

its drops off because of the cam. the stock grind is crap. a double roller timing chain (true dual timing chain) can not fit on a balance shaft motor. balance shaft motors started in 93 and are still put in silverados today. the updated fuel injectors just get rid of the poppet injectors and IMO are not worth the money. what exactly is a "high compression spring"?

[XxsicnessxX]

It's not just the cam. It's a collection of things, and you can fit a true dual timing chain on a balance shaft motor, the truck in the video here has one :P The updated fuel injectors don't clog nearly as easily as the poppet injectors and in my experience, is definately worth it. Also i'm talking about the compression springs in the heads. Even with all of the stuff we have done do the truck in the video here, the power band still drops off after 4800RPM, with a bigger cam :P

[blueolds01]

do you have pictures of the double roller timing chain? did you use the stock timing cover? what are the specs on your cam other then .500 lift? you need duration in these motors. by compression springs you mean valve springs? im not trying to be a dick, just looking for more info.

[isphius]

it takes a lot more than that to make an extra 200 hp lol

[brent891]

i bet alot of people ask if you have a diesel motor i know thats what they ask me about mine all the time, sounds excellent though

[350AmericanMuscle]

wow idles very good, like a V8.

[92sonoma]

the 4.3's are capable of tons of hp, i've seen them with over 1200 hp, just look it up, its just a 350 with 2 cylinders knocked off, same bore 4in, 348 stroke, they're great engines

[bonestater]

bad ass mine is only making 250 and i plan puting a turbo on it soon with some injectors and pigy back fuel pump.

[XxsicnessxX]

Isn't hard..they come stock with 192hp i believe..Shoot with just a full exhaust system, a mediocre ignition upgrade and some work with the computer system and you can easily pull out much more. I laugh when people say these trucks are junk and underestimate them.

[blueolds01]

what is all done to the truck? i have a hard time beleiving its making 400 horse, not saying its not true. i just want more info on it. im building a 4.3 in the fall.

[XxsicnessxX]

A lot of things have been done to the truck. A short list of the engine:

Block: Blueprinted and line-honed, Bored .030" over, splayed caps from a 383 stroker, forged crank, .030" over pop-up pistons

Heads: Bored out combustion chambers, ported and polished, arp studs, magnesium roller rockers off the 383, valves from the 383, rods from the 383, lifters off the 383

Cam: (forgot) i know the lift is .500/.501

Ignition: msd wires, msd box and coil, delco plugs

There's more..out of space haha

[blueolds01]

so you have like a 11:1 compression...it still runs on pump gas right? ever gonna have it dynoed? any track times?

[XxsicnessxX]

Sorry for the late response, i'm rarely on these days. Also it's getting 10.5:1 compression, no dyno yet, and it did the quarter mile in 14.6 seconds spinning the tires in first, second, and stepping out in third

[fukhole]

hey what kind of engine and exhasust do you have in it ?

[XxsicnessxX]

4.3L v6 edlebrock headers, 3" y-pip to a 3" downpipe to a single inlet 50series flowmaster, to a dual outlet