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Racing Fuel Systems • View topic - 17085586 on a 396 with a bit of a cam....

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17085586 on a 396 with a bit of a cam....

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Re: 17085586 on a 396 with a bit of a cam....

Postby Dtrue2 » Thu Jul 27, 2023 6:16 am

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Re: 17085586 on a 396 with a bit of a cam....

Postby Dtrue2 » Sun Sep 03, 2023 5:23 pm

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Re: 17085586 on a 396 with a bit of a cam....

Postby Dtrue2 » Sun Sep 03, 2023 5:33 pm

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Re: 17085586 on a 396 with a bit of a cam....

Postby rgalajda » Tue Sep 05, 2023 9:01 am

You wrote: I have tried to limit total using a screw in the t-bar (not sure right term) that the rotor screws down on but that did something weird and made the timing come in too fast if that makes sense.

Like in the picture below?
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Re: 17085586 on a 396 with a bit of a cam....

Postby rgalajda » Tue Sep 05, 2023 9:35 am

After looking at some of my notes,I have used as large as .134" for idle bypass air and .040" idle tube with .052" idle down channel on a BBC with camshaft similar to yours.
This is power piston spring I use mostly for performance applications . 7036019 power piston spring, which has a cut-in point about 8-4 inches of vacuum. You can still buy them from Allcarbs . https://allcarbs.com/product/quadrajet- ... on-spring/

Also 7029922 has a 7-3 inch vacuum cut in point https://allcarbs.com/product/quadrajet- ... -spring-2/
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Re: 17085586 on a 396 with a bit of a cam....

Postby Dtrue2 » Tue Sep 05, 2023 2:07 pm

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Re: 17085586 on a 396 with a bit of a cam....

Postby Dtrue2 » Tue Sep 05, 2023 2:37 pm

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