Cliff agreed there is a mismatch, but there was also one on my car using the same intake(no plenum divider massaging) different carbs with adapter and it still picked up the car significantly-so the mismatch might not make a big deal is all I'm saying. There is also soem mismatch using an open spacer even with a Qjet as some of the primary flow can use that 1" to try and turn into the secondary hole yet hits the flat factory area between the bores.
And that Q jet had slightly bigger primaries so if we say my motor needed that extra 50 cfm the Demon provided might not be that 50 cfm amount more. And the Qjet had dynoed equal to 850 Holleys on several motors-even a 500 hp Buick.
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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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