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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jan 2008 Posts: 4,963 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,963 | Looks like someone let their imagination run away with themselves. I doubt that you will ever get the leaks fixed on this contraption. I would put stock exhaust on it and get rid of this junk. | | | | | Joined: Oct 2015 Posts: 67 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2015 Posts: 67 | I had heard that the dealers would split the manifolds to make dual exhausts for more power from some of the old timers around. Can't tell in pics if that is what it is. They tell me they where brazed and homemade looking. But sound good. | | | | | Joined: Jul 2014 Posts: 48 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2014 Posts: 48 | Why would they chose to use the top port??? Why not just install a set of stock manifolds? Those would probably work great on a ratrod? Or a tractor? I've never seen them before - they were never used on a passenger car or truck. Industrial goodies. | | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | Perhaps they were manifolds on an industrial engine like an irrigation pump. Might be made by the company that assembled the power units and not a GM manifold option.
| | | | | Joined: Dec 2015 Posts: 2,063 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,063 | Grigg, that makes the most sense, I have not taken one off yet but, I see flashing from the casting around the top port so, I don't think this was something that was welded on, but rather actually cast that way. I am real curious now to get one off and see if there are any casting numbers or other markings on it!
This was a grain truck, they wanted to keep the exhaust up above everything so it wold not catch the fields on fire, I think they succeeded in that! | | | | | Joined: Feb 2004 Posts: 29,881 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,881 | I seem to remember some of the farm equipment manufacturers using Chevy V8's in combines and other big pieces of equipment. I'll bet some enterprising farmer scavenged the engine out of a junk combine for his truck!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Dec 2015 Posts: 2,063 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,063 | I seem to remember some of the farm equipment manufacturers using Chevy V8's in combines and other big pieces of equipment. I'll bet some enterprising farmer scavenged the engine out of a junk combine for his truck!
Jerry I did that very thing for a flathead 6 for my 50 DeSoto in Ronan Montana probably 20 years ago! Got one out of a combine that was sitting in a field! Had to change the front plate for motor mounts, but it gave me an extra 30 cubic inches, same bore so, all from stroke! | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Must have been the 258 version.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Dec 2015 Posts: 2,063 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,063 |
Last edited by 69Cuda; 05/11/2016 3:16 AM.
| | | | | Joined: Nov 2011 Posts: 1,611 'Bolter | | 'Bolter Joined: Nov 2011 Posts: 1,611 | Interesting, have you determined the intended application yet? | | | | | Joined: Sep 2015 Posts: 54 'Bolter | | 'Bolter Joined: Sep 2015 Posts: 54 | Was the top fitting designed as a heat riser? | | | | | Joined: Dec 2015 Posts: 2,063 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,063 | The top is an exhaust port, not a heat riser. I looks like it was designed to run the exhaust out the top exactly as has been done on my truck. There are a number of industrial applications where you may want exhaust exiting up, farm equipment being one of them. | | | | | Joined: Jul 2014 Posts: 48 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2014 Posts: 48 | The more I think about it, the more ideas I have. Those would make great turbo manifolds, although that's not what they were designed for. | | | | | Joined: Dec 2015 Posts: 2,063 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,063 | I better not mention turbo manifolds to my son in law, he will be all over me to do a twin turbo setup on this or something! | | |
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