brandon 455

I just recently purchased a Holley 750 street hp. I was wondering if anyone could tell me about this carb?

oldcutlass

It's a good in between chokeless steet/strp carb:

http://static.summitracing.com/globa...99r10319-1.pdf

brandon 455

I noticed it had screw in air bleeds. Which one is for W.O.T and which one is idle?

brandon 455

I noticed it had screw in air bleeds. Which one is for W.O.T and which one is idle?

TripDeuces

This may help

brandon 455

So its saying that I shouldn't have to change the air bleeds. I have a rich idle. What else can I do to help this out?

oldcutlass

What are all your settings, timing, idle speed, how many turns out on the A/F mixture screws, how much vacuum, where is your vacuum advance plugged into...?

coppercutlass

How open are your primaries on the fast idle screw ? I had a severe rich idle with a holley I cracked open the secondary idle screw that's under the base and closed up the primary a bit and that did the trick. If you have too much of the transfer slots open you will get a rich idle due to the carb thinking it's transitioning instead of idleing so it dumps unneeded fuel. Before I found this out I used drilled throttle plate on a quick fuel carb I also ran in the past.