I think GMC enfines have the displacement cast into the RH side behind the distributor if I recall correctly. The 245 or 248 on the head would not indicate displacement. Also try the OldGMC website.


1953 Chevy 5-window 3100
In the Stovebolt Gallery
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Dave
Engine & Driveline Moderator

If you can't make seventy by an easy road, don't go. ~~ Mark Twain