1h is a 455 4bbl auto
4h is a 400 2bbl auto
3h is a 400 4 bbl auto
7h is a 400 4bbl 4 speed.
98-112cc's most all have screw in studs after march or so of '73. Only the 3h and 7h will have screw in studs prior to march.
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Nothing is impossible if you break it down into possibilities. It's all a matter of "Want to".
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