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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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Feb 2012 Posts: 46 'Bolter | | 'Bolter Joined: Feb 2012 Posts: 46 | Hey fellow bolters. I bought a 53 GMC panel truck. Its a mess but there are some good salvageable parts. Under the hood is a 302 . I know nothing about these, didnt even know they existed.are they good? Full pressure? It turns over by hand and dipstick looks clean( no water). Looks complete
Casting number on block GMC 1 2324004. Number on pad 302125727
Thanks, pics in photobucket | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
It is longer than the 216/235/261 block, so a little modification is needed to get it to work in a Chevy.
It is a very desirable engine. Maybe you can find someone who has a good 261 who wants to trade.
| | | | | Joined: Jun 2008 Posts: 1,388 Shop Shark | | Shop Shark Joined: Jun 2008 Posts: 1,388 | They are a terrible engine. Send it up to me and I'll take care of it for you...  Hahahaha! They are a sought after engine, and are super cool! That's a great surprise to find under the hood! | | | | | Joined: Dec 2004 Posts: 1,897 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 1,897 | The 302 GMC is a highly sought after motor. The casting number is a later "Civillian" 302. The 302 motor will bolt into any 1939 to 1959 gmc. However being the later civillian 302, this motor has "side mounts" in the front. To bolt it into a 1939-1955.1 gmc truck, the front timing plate needs to be swapped. The 302 is full oil pressure as is the 228, 236, 248, 256, and 270 gmc motors used from 1939-1959. The gmc family of motors is about 2 inches longer than the chevy 216, 235, and 261 motors. Factory HP numbers are only about 160 HP. There are many speed parts avaialable for more performance. 225-275 hp is not unheard of on a streetable 302 motor. I brought my 302 to an ATHS show for it's first start. Jim Carter of Jim Carter's truck parts came running over to see it as I pulled up. He wrote this article on my motor. http://www.jimcartertruckparts.com/Showcase/the_king.php | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
Nice Jim Carter article, John
| | | | | Joined: Feb 2012 Posts: 46 'Bolter | | 'Bolter Joined: Feb 2012 Posts: 46 | Very nice article. Congrats.
Well its always nice to find a surprise when you buy a rusty Ol truck. I cant keep everything so if any one is interested in purchasing the engine let me know. Thanks,Jeff | | | | | Joined: Dec 2004 Posts: 1,897 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 1,897 | Jim did all the work! Jerry Van Cleeve acted as an intermediary. I just tried to replicate the setup Arlyn had out at Hutchinson. Arlyn's 302 was in much better tune.
Actually, The engine would not have fired at the show if not for about a dozen people. George Moniz was working the distributor. Cletis was right there as was Grigg. It was a very nice show! | | |
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