Quote:
Originally Posted by Tom Vaught
What Power Valves do you have in the carb?
Assume that the RPM is same height or less height vs the Victor, why did you remove the 1" Wilson spacer?
Did you check for proper accelerator pump linkage adjustment on the front and rear bowls?
.015"-.050" extra travel of the pump arm when at WOT. No clearance at Idle rpm.
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Wasn't able to use the spacer (wanted to) due to the shaker scoop height/fitment. already using the blocker kit for the rpm manifold.
went thru everything today and cured the backfire, thank you for the assist. the carb came with #84 jets all 4. both power valves are 6.5, when I checked the fwd one it had 2 gaskets installed one smashed and tore thru the other pushed to the side. question: my previous carb did not use a rear power valve, was blocked off after tuning perhaps I should do the same now? not certain what that gains. heres what I have after tuning:
87 fwd 88 rear jets
both pv's 6.5
41 squirter
fwd adj screws 1 1/4 turns out, rear 1 turn
8lbs vacuum at idle
18 degrees initial, 34 degrees total timing