- Nov 11, 2012
- 69 chevelle ss 350hp, turbo400
Trying to find what this block is out of. It is a 4 bolt main and has a factory forged crank. Can not seem to locate info on the suffix codes, I have 1m0520 on front pad, under that is 4p04. Then on drivers side rear above bellhousing bolts it is stamped 035266. On back of block above block casting number there is cts-908, 13-05-04, 8:40 written in a paint marker. Any help would be appreciated. Thank you all in advance.