Originally Posted by Ground Rat
Is it a SB or BB? Chevy?
i have a bit of an update
the casting # on the heads is3876775 which as far as i can
tell is a 60-67 327 head... it does have an acc. hole on pass side
the date code says c166??? no idea how to decode that
the block is 3970010 which works as a 350 or 327 block
the code on the front of the engine has a TBM suffix
i guess a 350 from what i read online but the years are different
so do i have a 350 block w/ 327 heads
or a 327 that i misdecoded......