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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: Nov 2016 Posts: 3 New Guy | | New Guy Joined: Nov 2016 Posts: 3 | Hey guys, Last year I was touring the Southwest of England and came across an American Made Yellow Truck and Coach Engine. I would imagine it was used in the war effort somehow. Ddoes anyone know what model/year it is? What would it look like when it was new? What do you think it came out of? imgur.com
Last edited by Tiny; 11/21/2016 2:08 PM. Reason: fixed link
| | | | | Joined: Feb 2004 Posts: 29,841 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,841 | Since Yellow Coach was a General Motors brand, that one is probably one of the GMC truck engines. A lot of 270's were used in military rigs during WW II, but the smaller displacement engines like the 228 and 248 look the same. The general shape of the valve cover and bellhousing also suggest "GMC". The stamped number on a machined pad behind the distributor would have begun with the engine displacement- - -"228/248/270" etc. The larger GMC engines like the 426 and 503 have the carb and exhaust on the other side.
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: Apr 2010 Posts: 245 'Bolter | | 'Bolter Joined: Apr 2010 Posts: 245 | That is a GMC engine. Displacement should be stamped on the distributor pad.
Last edited by 68ironhead; 11/21/2016 5:29 PM. Reason: two minutes too late
| | | | | Joined: Apr 2005 Posts: 2,101 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,101 | The weird part is the "Transmission". It almost looks like something out of a boat.
Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
| | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | The weird part is the "Transmission". It almost looks like something out of a boat.
Fred That's exactly what I was thinking.
Bill Burmeister
| | | | | Joined: Nov 2016 Posts: 3 New Guy | | New Guy Joined: Nov 2016 Posts: 3 | That would make sense that it came out of a boat. I found it in Brixham, which is right on the English Channel! | | | | | Joined: Sep 2008 Posts: 872 Shop Shark | | Shop Shark Joined: Sep 2008 Posts: 872 | That's definitely a GMC engine 99% positive if came out of an early war truck, the updated when rebuilt. Early trucks would not have PCV from the factory, but they were retrofitted during service.
You can see the adapter ring bolted to the bellhousing... its not the Clark 5speed that came with the truck. | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Governor indicates probably 1.5 ton truck or larger, originally, before trans change. DUKW would have had normal trans driving, probably 270.
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: Nov 2016 Posts: 3 New Guy | | New Guy Joined: Nov 2016 Posts: 3 | So is this what it looked like originally then? (scroll down a bit) Detroit History IS there anywhere I can download the original owner's manual for the GMC 270? | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy thepooch, thank you very much for posting the Detroit History link, great information there! | | |
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