I know mine flowed more than 200 "virgin"!Tulip valve hurt it some flat D port valve picked it up 5-10%. With an NMCA Top Stock class legal pocket clean up and gasket match they go about 255.
I know Edelbrock has moved the exhaust valve-I want to think 0.060-0.070. Enough where you had to check exhaust valve clearance in TRW piston valve reliefs. Not sure if High Ports are the same as Edelbrocks and can use the same pistons.
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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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