Chevelle, El Camino and Monte Carlo were the only big block cars to get the 12 bolt in '72. All other Chevys (except Vega and Vette) had the 8.5 10 bolt at that time, no matter what engine was installed. All other GM cars (Except maybe GTO) had also gone to the 8.5 by '72.
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Freddie
1969 Camaro RS/SS396 (427) 4 speed
Last edited by big gear head; 01-27-2019 at 10:26 PM.
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