4.3 Fiero update

it took two 4.3 v6s to make one complete good one. man these engines take some abuse, I have seen 300k SBC with less issues. I took the heads from the original L35 CPI that had the bad crank. The new TBI 4.3 heads were junk bad seats, worn guides. block had been bored .040 running 12cc dish pistons aftermarket. the larger bore works better with the L35 combustion chamber sizing.