need help asap what carb for my motor 600 750?? edelbrock

yes power valve blows from back fires thats why i got sick of holly probley 5 to 7 years ago i would lose my tune and get back fires at the track leaving the line to about 60 foot and out went the PV

So you think the eddy 750 is going to be easier to tune than a hollley...good luck...

you should have figured out what was causing the backfires.....