It seems that according to Wikipedia from 1954 to 1956 the was an Oldsmobile 370 CID Eng. that was strictly used in GMC only. And in 1957 through 1960 an Olds 371 CID was used by GMC.

So far nothing about Pontiac Eng s in GMCs.

This came up today because someone has given me the Bell housing, Flywheel, two (yeah 2) dis-clutch and pressure plates. This out of a GMC Cement truck. It has the same style recessed flywheel as my 1953 GMC FC454-30.

Now all I need is an Olds 371 CID or 370 CID Eng with J2 setup for my 1948 GMC FC253 1Ton dually flatbed, with SM420 and Watson series 30 Auxiliary 3 speed U/D/O.

And I can fly....weeeeee

And we will be flying.

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