In a Hot Rod build up a few years ago Ken Crocie opened up some 670s kind of like I'm talking about. Dave Bisshop of SD performance said he has some also just partially opened up and they make good hp and take less timing than most other heads. Even most current designed small chamber quench/fast burn heads havc alot more unshrouding around the intake than the 670s do.
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Skip Fix
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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