I'm amassing the necessary parts to tear into my Holley 650 that I'll use on my setup. I'll be using the walk through from hangar18fabrication.com/blowthru.html

I'm curious about how much I should drill out the PVCRs, if at all for the 200-300hp range?

I'm also wondering if anyone can help me with choosing the proper primary and secondary jet sizes?

One last thing. I'm looking at running -6an, 3/8" fuel line with a 1/2" return line. Would this be sufficient?

I'm running a 650dp and a Garrett A/R .42 T3/T4 with the stock spring...7lbs, I'm guessing? I don't really want to go further than that.

Thanks guys!

 

Don't drill the pvcrs untill you start tunning (you can't un do it ) on my 600 I think I had 65 pri. And 85 sec for 5 psi, on a stock port 12a

That fuel line is fine, I ran 3/8 supply and 5/16 Return no problem, what pump are you using?

 

Thanks for the reply!
I'm going to run a Holley blue pump with an Aeromotive RR FPR. I haven't gotten around to plumbing the fuel sys, yet. I wanted to be sure about the line sizes.

I forgot to mention that the setup is on a large streetport 12a