930 cfm carb questions
Barry Grant DP 930 cfm questions.
I have an older Barry Grant 930 cfm carb, it is a reworked Holley 4779. A tech from BG said "The original jetting would have been 74 primary and 84 secondary with jet extensions on the rear. The pump cam would be pink. The old stage 3 carbs flowed a little over 900 cfm in the 4779 version."
I have 78 primary, 88 secondary, with a pink cam on the secondary accelerator pump, and white cam on the primary side. Rear PV is blocked.
Engine specs:
463 BBC
Solid cam 236@50 .561 lift
Merlin heads oval port milled for flat surface
comp about 8.6
Edelbrock Performer RPM airgap
1 3/4 full length headers
3 inch exhaust
T-350 2500 stall
Is there anything I should change on the carb?
Last edited by elcoman; 01-02-2010 at 04:29 PM.
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