camaro355

I have an lq4 with 317 heads. I want to twin turbo it and have at least 700+ rwhp on pump gas (91 octane). I was going to go with forged pistons and rods with ARP rod bolts and an LS6 intake. I need help with selecting the right size turbos, a cam, piston and compression ratio. It will be going into an 89 Camaro and I'm on a budget. I want the turbos to spool as quickly as possible but not get choked at higher RPMs. This will mostly be a street car, it might see the track two times a month. Any help, advice, or part numbers would be most appreciated. Thank you.

camaro355

Would a 57mm Garrett be a good choice for the turbos?

Wicked69

I would copy my build. Mine just made 588 to the wheels but it was spinning on the dyno and convertor to loose. Probably closer to 635 in reality. I am only running 15lbs of boost and a stock bottom end. If you are going to forge you could easily hit it around 20lbs of boost. Here is a short video. It spools crazy fast! Should be crazy on the street and still do very well at the track. The video is only 3-4lbs of boost and only to 4-4500 rpms. Instant power and should be very reliable at 15lbs.


http://www.youtube.com/watch?v=_yBihwipfok

camaro355

It does spool crazy fast. Do you happen to know what compression ratio i would want to run 15-20lbs and stay on pump gas?

camaro355

How about a vtc3 for the cam?

camaro355

Screw the twins, I'm doing a single!