Re: Engine Rebuild Question- Cam Options
The 1980 engine is different from a 1988 engine. The early engine has a two piece rear main, the heads/valve covers are different. You are going backwards with the early engine.
I am not sure when the blocks were factory set up for roller cams, but the 1988 might be. I had a 1990 (or 1992) in my 1972 2nd blazer and installed a Caprice cop car roller cam in it. Easy, cheap, strong running, plus bolt in change to do. Look for bolt holes in the middle of the lifter valley for the roller guide hold down. Will also have factory bolt holes behind the cam gear for a thrust plate.
GM
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