Mitch,
Not the same in 1970, according to Dale McIntosh's site...standard rear axle ratio in 70 was 3.31, regardless of transmission. HD 3 speed manual was not available on 1970 SS396 or SS454.
http://chevellestuff.net/1970/power_teams.htm
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Bill Pritchard
73 Camaro RS Z28, L82, M20, C60
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