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Well, that really doesn't anwser the question as to what the deck is for your engines. After raising the decks to lower compression, did they bring them back to the original spec in the 1980s?
Beats me:
See post 2. Looks like the 302 went up to 8.229 in '73-'76, but all others are 8.206, give or take as there are production variances and untrue blocks. 351s appear to have started at 9.480 but went to 9.503 in '74 and stayed there.