Here are my measurements from the fronat and rear valley pan seal of the block. on the first dimensions. Second set to a flat valley pan right at the carb pad.
Northwind 7 5/16 / 7 3/8 Carb pad 7 3/16 / 7 3/16
Victor 8 9/16" / 8 9/16" Carb pad 8 1/2 / 8 1/2"
So about 1 1/4"
I got a Northwind 4500 form Butler a few months ago but had to wait a month or two for it to get to them. My IA/Camaro with a 3" cowl with E heads and a Victor is close with a 4150 but I can get a drop base air filter on it. Not sure it would with a Dominator and for sure with High Ports and Victor.
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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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