We tried some 1 3/4-1 7/8 step-real short 1 3/4 section and about as big as port on a friend's 650 HP 462 E head roller motor and lost 40 HP and a lot of TQ vs the 2" he had. Used some modified GTO Hookers to fit his 63 Tempest.
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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 13.43@103.4
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
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