Quote:
Originally Posted by bly
WTM, I have tried hard acceleration at high RPM's, 3500 and above, still craps....
Would you be suggesting the power valve may be blown? I will check tomorrow..
I will have to check what size jets I put in sec., maybe I went to small???
Thanks again for all the help guys,,,Brandon...
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If it still crapped out when you were at a constant 3500m RPM and then mashed the pedal, it sounds like the problem is NOT in the acc pump circuits. Too big or too small a jet size would NOT give you that problem. If the power valve was "blown", it would idle like a pig with black smoke.
But maybe the power valve (or valves) are not opening. Run a vacuum gauge into the passenger compartment and check to see what is the manifold vacuum at idle, normal cruising and WOT. Write the values down. Most Holley carbs come equipped with a 10.5 "Hg power valve, so the valve opens when the intake manifold vacuum crosses 10.5 "Hg.
If you pull out the power valve, check to make sure you have the correct gasket. If you have the hi-flow valve with the rectangular windows, the gasket should NOT have the 3 centering tabs.