Holley 750 backfire.

Ajp440 said
I did a vacum reading on it already pulls around 10 in gear. The Holley has the metal check ball built in for the power valve protection too. I have a 6.5 in it now. May need a 4.5? U can tell if the power valves are blow by sucking on them and making sure it holds and no air escapes right?
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I would pass on the B&M, that 3200 will be about what you already have now, Yes the PTCs are VERY streetable, I ran 3 different styles & all were "dead on" with the flash stall they were set up for, The plus side is now they all come with balloon plates for nitrous use.