Re: Engine Question...GenI or GenII !?
From the numbers it looks to be a Gen 1 Targetmaster. Gen 1's are anything up until 1987. Gen 1's use a 2 piece rear main seal. Whers as Gen 2's use a 1 piece that has a removable rear housing. A external oil seal. Where as the 2 piece is internal mounted in the crankshaft's rear main bearing cap.
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68' C20. 283CI w/55CC 305HO heads, NP435 Close Ratio, Corp. 14 bolt FF 3.21, 75' front end swap (everything but the X-member).
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