GMC 302 Military engine , running with better sound

What a great job, reminds me of a guy that was building his own boat a he had a big Gardner 6L3 diesel (114 hp @ 800rpm) outside on a stand, when he got frusterated with the boatbuilding he would just go outside and start up that beautiful big engine and just watch and listen then get back to work

Anyone else surprised at how gnarly the idle sounds?

Wow very nice build!! Charlie Seabrook had a big Jimmy 6 in a modified roadster.Was a big name at Atco NJ.

Absolutely Beautiful thank you for keeping the old iron working - my Dad hauled gas for the 474 fighter group in ww 2 the stories he told about what they put them engine’s through would amaze you - including the stuff they did to get the job done, like crossing a very deep ravine no bridge they laid two big cables across put there spare tires on the front axle so all the wheels had duels - drove across the ravine with the cables between the rims - Dad said it was deep enough that if something went wrong there wouldn’t be anything to salvage - the balls it took to drive across that - Truly a special generation - thank you again

It should pull that Model A around very nicely. I would love to see it when you get it finished.

Many thanks to all who have commented. The kind words and encouragement are appreciated. In the future I will be posting a progress video of this engine in the completed chassis of the 1930 Ford Model A coupe .....Stay tuned!

Years ago I did a valve job on one of these. It was in a 5 ton GMC military truck. Good running engine.

I would love to put one of these in a mustang. "Yeah it's got a 302" Edit: Beautiful build btw sir.

That was a good engine, when i first enlisted in 73 my unit had a fleet of 2 and a half ton trucks the 211 deuce! i remember changing head gaskets, water pumps, they had the automatic trans. that took 30 wt. oil, they were called sop a matics,lol. I also had a 49 GMC with a 228 engine, it was a running truck, and i was sorry i sold it

Nothing beats the sound of a straight 6 !

Obviously built with a lot of love. I hope you enjoy driving it for years!

The things you've done to that old girl are just amazing Especially love the tri-power manifold. Maintaining and highlighting the beautiful script of the GMC emblems is brilliant.

Really cool i have a 292 inline and didn't even know they made 302ci engines. Tri-Power set ups are sharp. Im sure you could even supercharge that block like I can a 292

Got one just like it myself, had it built several years need to get it running. Beautiful job! Love the sound.

And you thought normal straight six's lasted a long time! Very cool build!

Ahhhh, the men of gear heads clan, we meet once again! Great build and thank you for sharing!

What a beautiful sound Jeff. Hope your project has turned out to your liking. Thanks for sharing.

I've had a couple advanced design Chevy trucks with 216 and 235s. Always liked the inline 6 engines and what you could do with them.

Great exhaust note, and I bet it's a torque monster

What a great build and a damn fine looking motor ya got there! I'm sure you could have a second career as a GM military engine builder. Thanks for putting this up because not a lot of people know about these great engines. Hey how about a  9.5-liter GMC “twin six” truck engine next time :)