GM 6 cylinder engine, Deuce and a half.
Yes, I took the first post from Shawnjohn16; to be the General Motors 269 (270) cu in, gas engine used in the CCKW and later M135 2 1/2 ton trucks. It was also used in the DUKW, Amphibious vehicle, and We had the engine, in a M59 Tracked Carrier, which had two (2)engines, one on each side of the carrier.
There had to be, I don't know, millions of the M135 trucks and variants. Probably built up until about 1960's. But the National Guard used those trucks until the late 60's.
In the M135 it was mated to a GM Hydro-Matic transmission, with a dual range, High/Low. Anybody could drive a M135, No Clutch.
They were tough engines and tough transmissions; just mash the gas and hang on for the harsh shifting.
I drove these and worked on them. Engine and transmission failures were almost unheard of. We always had ignition trouble, (points, coils), and carburetor troubles. I suppose the carb problems were from the trucks setting around a lot, and water in the gas.
That M59 carrier was a hoot. We had to synchronize the 2 engines, oh my God.
With all the Military surplus engines; who knows where these things went. I saw warehouses full of new engine, transmissions, in the late 60's.
old1
Shawnjohn16, didn't really say what kind of transmission the crawler had.
