My Crower billets I bought used had the 12 point nuts tweaked a little when previous owner removed them. Buying new correct nuts would have been ideal as the shoulder on the ARP 7/16 nuts was 0.040 to big to fit in the rod recess. Had to have some turned down to still use decent rods.
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1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune [email protected]
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
1964 Corvette Coupe 327 4 speed
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