Hi Hot Rod Dad,

If you have a 52 GMC that was built in the USA, not Canada.

Put a 55-56 GMC 248, 270 or 302 in the pickup truck. It is a direct bolt in, except for the front motor mount which is easy to change. You get a much more powerful engine with full oil pressure fed crankshaft.

I just bought 2 55 GMC 248's running for $100.00 each. Yeah, I had to do some driving but, it is well worth it for the results. I have 2 1948 GMC's a 1/2t &1T.

Good Luck,

Dance like no one is watching,
Sing like no one is listening,
Love like you've never been hurt.

1948 GMC FC101 1/2t Pickup w/270 and SM420
1948 GMC FC253 1t Factory 80"x9' Flatbed Dually
1948 Chevy COE 2 Ton 8'x15' Flatbed
1950 GMC 354-24 2 Ton 8'X12' Flatbed w/Dump Hoist
1953 GMC 454-30 3 Ton 8'x14' Flatbed w/Dump Hoist
1953 GMC 454-30 3 Ton Cab and Chassis
1942 Clarkator 6 MILL-44 Heavy Aircraft Tug
1942 Ford (9N) Moto Tug with 1/2 yard Loader
1947 Oliver OC3 HG-42 Tract-Crawler Bull Dozier w/6' Blade