Balaur-1962 GMC 1 Ton v-12 702cid

[smd30m2010]

lol they ever mak a super charger for it?

[haystack155]

I'm lucky to live in western Oklahoma farm country. We have no smog inspections.

I'm Haystack155 70yr old dad. Used LP for fuel in tractors, trucks, cars, etc. for almost all my life. It's my fuel of choice on older vehicles. I built a '58 Chev Imp/w hot 454. Ran both gas and LP. Used all safety practices required. A state LP safety inspector saw it at a show and complimented the installation. LP is a good clean fuel, but don't have good affordable conversions available for FI engines.

[fabronff]

My dad ran Impco mixers on his 65 chevy and put 500,000 miles on a 305 v6. Recently in 2010 the smog laws became so strict that I was told by the smog technician to remove my Impco equipment off of my '89 K3500 454 with 320,000 miles or I would be listed as having tampered emissions because I do not have executive order labels on any of my equipment that has been on the truck since 1989. I am now the proud owner of a 1963 GMC with a 305 v6 that will soon run on LPG! Take that Obama.

[TheSonofmydad]

Thanks for your replies! I've now seen pics of some salvaged long-blocks, upturned with pans removed to inspect. Doesn't look like a bottom-end you could hurt, long as the lube-oil stayed in & stayed good.

2 possible incentives still to run NG or LP. The {bad-words} who turned gasoline into the swill it has become have not tampered with propane and cannot do much to NG. And I've read that it just doesn't dirty the engine-oil the way today's trasholine will. Just a thought. Best regards.

[haystack155]

@TheSonofmydad: Your right on all counts. Either NG or LP hardly has any carbon buildup until the the rings get worn real bad, but that can be easily determined based on amount of oil consumption. We changed the oil and filter every two weeks running 24/7. 24 X 7=168hrs per week X 2 = 336hrs X using 50mph equevelent contant speed = 16,800 miles per oil change, (hope my arithmetic is correct). On tear-down, there was very little carbon buildup. Had sight gauges on pan and added oil nonstop

[TheSonofmydad]

If it can do propane, is the bottom end strong enough for a little more compression? Propane is only about 110-Octane. Compressed NG is about 145 and may be less expensive. Just a thought. Best regards.

[haystack155]

@TheSonofmydad ; When they were on an irrigatlion water well, they piped natural gas from local wells nearby. The wells were about 300' deep/w 10" pumps. Some wells would produce 3,000 gpm. On the big wells, they might load the old engines to near 0 vacuum, turning apprx 2000rpm and would run 24-7 for years. They came equiped with high compression pistons to compensate for lower octane. I have a friend who retored one and put in a pickup, switched carbs back to gas. It really has a kick

[haystack155]

@TheSonofmydad ; When they were on an irrigatlion water well, they piped natural gas from local wells nearby. The wells were about 300' deep/w 10" pumps. Some wells would produce 3,000 gpm. On the big wells, they might load the old engines to near 0 vacuum, turning apprx 2000rpm and would run 24-7 for years. They came equiped with high compression pistons to compensate for lower octane. I have a friend who retored one and put in a pickup, switched carbs back to gas. It really has a kick

[ellobo1965]

OH Man, that thing looks like fun!!!!!!

[121parker]

is that original

[ezzzstang1]

I never knew this kind of engine existed! I love the smile on the face of the driver! that had to be a ride to make you grin ear to ear!

[TraditionalChevy]

Kinda sounds like a 4.3

[haystack155]

Farmers junk piles in pastures. They used them to power agriculture irrigation well pumps. GMC discontinued the V/6-V12s in 1966. The pump this motor powered a well that produced over 2,000 gallons per minute.

[va4cqd]

@haystack155 actually they produced that engine series from 1960 to 1974

[bfrance2002]

That is cool. Where do you find those v12s?

[haystack155]

@bfrance2002

Famers junk piles in pastures. They used them to power agriculture irrigation wells. The well this motor powered pumped over 2,000 gallon a minute.

[haystack155]

Yes, I cut 30" off another hood and used it as filler and two sets of hinges. Close rear first, front overlapped when closed.

Check Haystack155, sub-titled- First show and tell. All Haystack155 videos pertain to this motor and truck.

I've started another V-12 project in an '84 GMC C2500. Be awhile before any videos are posted of it. It may be another long-nose, or let the engine come back into the cab. Haven't decided yet.

[jadum1rollin1fresh]

@haystack155 that truck is awsome

[mike198748]

i like the way you stretched the front end good job,, did you make a hood for it

[haystack155]

\@fastjapy: Just happened to have that 60 gallon tank. We used to use alot of propane on our farm tractors, pickups, and trucks years ago. Propane has increased in price so much there is no economic advantage anymore as well as a coversion for the conputerized vehicles is cost prohibitive too.

Let's see???? 60 divided by 3 equals 20---- I could almost go to town and back on a full tank.

I have a friend in Wisconsin who built a nice long-nosed GMC pickup who gets about 7 MPG on gasoline.

[jdog942]

@haystack155 Lol that's a whole lot better than my Dodge 440 crew cab dually, I'm getting between 10mpg and 6mpg.

[michaelpack1988]

I bet it gets 2 miles per gallon. lol

[Dude2012iffy]

Don't have to worry 'bout runnin' over the dog! He's scared shitless of it!

[haystack155]

@Dude2012iffy He wasn't quicker than a rattlesnake last fall. Got bit in the center of his chest. He was a goner before we found him. Sure hated we lost the little rascal.

[Dude2012iffy]

@haystack155 Sorry to hear that! Still, a cool truck.

[haystack155]

@Dude2012iffy Thanks

[scribklu]

How much inches did you extend the fender/cowl?

[haystack155]

@scribklu : I added 30 inches to have room for the motor. Motor is even 5 feet from tip of water pump shaft to back of clutch housing. Gas mileage about 3mpg. It running on propane.

[vogtb304]

That is the most awesome GMC I have ever seen, what's the gas mileage?

[filmcostar]

is the old v12er runing on leded gas or cng/lp? super sport truck / ss702 v12!

[Mikebue11]

forced induction would be interesting on this.

[rorycassidy]

what a waste of a V12, and a hilarious looking truck

[7seriesmax]

white lightnen and tools whoa lok out

[Lillie1986]

Lol the cab and hood is like 10 miles long

[haystack155]

@Lillie1986: Hood is 6' 8" from bottom of windshield to front tip of hood. Drivers seat is 2" closer to rear axle than front axle.

[ExtremeTruckerDave]

I had an early 60's GMC 1ton series 40 duel wheel 10.00x20 tires that had a 305 v6...tough ol truck

[4thstooge]

Did GM actually build this truck w/ those crude fender extensions?

[haystack155]

@4thstooge: No, the V12s were only in big trucks and stationary power plants. I did the crude extension on the pickup only as a means to show the motor. Preservation of the V12 was the sole purpose of the project.

[4thstooge]

@haystack155 Thanks for the reply, Preserving this little known engine must have been quite an undertaking. What vehicles did they actually com in ?

[haystack155]

@4thstooge: I can't name them all, but Military used alot, such as in the minute missle toters, many large firetrucks, and GMC heavy road trucks. We're in farming country, with ground water wells for irrigation. Many, many of them were used to power the irrigation pumps, 'til they were discontinued and parts no longer available. I had to use salvage parts from other junk motors to bring this one back to life.

[Hotrodx199]

Don't abuse the old girl too much, parts for these are very hard to come by and if you find them, they are very expensive. A gasket set and a few other things i got for my 305E v6 is gonna be around $700.

[haystack155]

@Hotrodx199 , I hear ya. A gasket set cost over $350. All other hard parts I scavenged from junkyards. We donated her to a local Museum. She will always be pampered, but started, and driven regularly to keep it limbered up.

Enjoy your 305E.

[will79601]

@wyldrocker yea they did make one guess i should have checked first,learn something new everyday

[will79601]

@wyldrocker 305 is a v8

[DrFruikenstein]

When I was in high school, a friend of mine found an old retired school bus, and grabbed the giant V6 out of it, freshened it up a bit, and transplanted it in a Chevy pick-up.

He said it was a 305.

Is that related to the V12 in your truck?

[haystack155]

@DrFruikenstein: Yes, it is related. The 305 is a baby brother to 1/2 of a V12. GMC made a 305, 351, 401, & 478 V6s & 702 V12 from 60-66. A V12 uses all the components of a 351, except block, crank, cam, dist., and oil pan. 351x2=702ci.

[baberam]

ive never seen one of these in my life never knew they existed ha random video i would love to have that engine thats crazy haha would be great to have the engine in the back though that thing is ginormous ha :D run it on the dyno :O

[haystack155]

@baberam : Don't feel your the only one who never knew of them. They only built the V6/V12s from '60-66. This one was used to pump farm irrigation water. I wanted to preserve one in running condition, had to use used parts. Installation in truck was for "show and tell" only. Thanks for your comment.

[MegaZsolti]

nice long nose lol

[haystack155]

tractor76765: I used two hoods, one short on the rear, stock for front. Two sets of hinges.

brainstrong46and2: Great idea, also, an old sedan body with open engine and no fenders would be fun, too.

I've about reached a quiting place on the old truck. Are they ever finished? Hope to have another video early June.

[GMCman82]

@haystack155 since the gas mileage is horrible to begin with, you ever think about putting it in a 1 ton 4x4 all jacked up with super swampers?

[haystack155]

@GMCman82 : Neat idea. Several others have been offered, but due to the shortage of motor parts, the old truck will always be used to let others see the old motor run. Always babied, and never abused as long as I own it.

[GMCman82]

@haystack155 true. you must preserve this piece of gm history. there will never be another like it.

[haystack155]

@GMCman82 :  Balaur has been donated to Cimarron Heritage Center, (museum), Boise City, Ok. She will be started and driven now and then to keep it limbered up.

[brainstrong46and2]

cool engine, goofy looking truck, you should bolt that engine in an older pre 30's fenderless truck,just my opinion.....

[haystack155]

Which video?, I've tried a couple of times, can't find it.

Thanks,

[haystack155]

I'd like to see a pic of "little brother". Balaur will never be a fancy truck. She is only to show the old faithful V12. Not many left in running condition. I bet she'd shuck a tranny or driveline if you punched her.

[timmywazzup]

it's beautiful. make it 4x4?

[MyVinylFetish]

Cool truck, love that donk !!!

[616ist]

Is that v12 factory for that truck?

[haystack155]

No, the engine was used to power a farm irrigation well. Not many running V-12s left in existance. Wanted to preserve this one, so modified this truck to show the old engine.

Thanks

[lad360]

11.5 L thats only a little more than twice as much displacment as my 87 sierra

[ChevyBM]

Damn! thats a nice truck! didnt know they made those with V12 engines!

[onlypresto]

damn, beautifull truck

[herbienbrian]

now that is a truck!!

[scott93257]

man I would love to see the reactions of people around town if they were to see that kind of an engine in my truck....It would probably fit in my 65 Chevy C20....uhhh with a little bit of modification...probably not tooooo much though ;P

[haystack155]

Not many mods needed. Just add 30 inches and a 1 ton front suspension to carry the 2400#+- weight the engine and tranny weighs. Your good to go.

[scott93257]

That would be so cool... How hard would it be to actually extend it 30 inches more?

[haystack155]

Major work.

Easiest way is get 1ton crew or x-cab frame, set the cab back the distance you need.

I used a '72 Ford 159" frame, mounted motor and driveline first, then mounted cab and front clip, then filled in the difference.

I've been working on this two years, and still lots of work to do.

[scott93257]

Ahhh yes there she is :) BEAUTIFUL

[slowpokebr549]

That old 60 degree Gmc will last forever on propane.Very nicely done, cant wait to see a hood on it. I bet it will take three to make one.

[slurpee27]

BADASS!!

Something very different

I love it

[SeagraveRules]

Boy you really had to customize that front end to take that V-12!!! BEAUTIFUL job!!!

[darricknratrods]

i was just wondering if you put it into something i seen the video of it running. very cool i wish i could find one for a rat rod.

[haystack155]

All of these videos are of the same engine, and it's now in the truck.

[darricknratrods]

yes i know very cool, i meant i was wondering if you did and then seen this video sorry for the confusion. its pretty cool. good job

[danielwetpaint]

What are we looking at? Is this two engines mated together? Can you describe the process?

[haystack155]

The V-12 videos labeled "Balaur" is the motor used in this truck.

[oldskoolcoinop]

That is awesome. Need a 61 hood for it.

[oldfordtruck149]

Really, REALLY want to see the truck with a hood on. Awesome project.

[haystack155]

I'm computor illiterate, my son posts the videos for me. I didn't know private messages also came to inbox until today that didn't show as comments.

To anyone I failed to reply by pm, I apologize and will check the inbox more often.

Thanks,

Cayoterun

[LocomotiveBreth]

I'm know that truck isn't light and the big V12 doesn't seem to mind at all. Looks like it will move on down the road just fine.

[haystack155]

Kevin: You can hold the brake and just a tad of throttle will sure make the rear wheels cry.

The adapters are fantastic. You did a great job.

Thanks, Cayoterun

[haystack155]

Yes, a machine shop in Nebraska machined the adapter from GMC SAE#2 flywheel housing to Chevy bellhousing.

A fellow in Dallas designed and built the flywheel adapter from the V-12 flywheel to Chevy flywheel.  Very simple and neat design. No vibration at all.

I can't get this to load another website that has the entire build thread from beginning to today. Wish it would. 17 months work posted there.

Cayoterun

[retrochad]

That's really amazing! I like the Waukesha extra-large radiator and the specially lengthened hood. DId you have to adapt the transmission mounting at all that would have went with the original V-6 to mate to the V-12?

[haystack155]

It finally will "Whoa and go". V12 GMC 702CI. T400 chev auto, mounted in 1972 Ford F-350 long wheelbase frame and chassis/w 1962 GMC cab and extended front clip 30". 9' steel flatbed.

Many improvements yet to be made.

Cosmetics and assessories still not complete.

Cayoterun

[tractor79765]

@haystack155 Have you made a hood for it yet? I assume you will just find another one and splice it on to the back of the original...

Awesome job - I too am a barnyard fabricator, thanks for sharing!