C7Deuce

Hi everyone, I have a 2017 Grand Sport pushing 563whp. I was just wondering what would I need to do to hit the 600whp number?

The current mods I have installed are:
A&A Supercharger w 3.8 pulley
2” ARH
LT4 fuel pump and injectors
Trans tune

Ive browsed through a few forums but I’m having trouble, the main 2 things I have been seeing are Meth Inj and/or E85.

any help would be greatly appreciated lol

emfollin

I think you have the goods to get there, just needs more aggressive tuning. Were you purposefully tuned quite conservatively?

C7Deuce

I think guess so, the platform and aftermarket world is fairly new to me. I guess I was expecting more out what I got but I’ll ask my tuner when he gets back on Monday

emfollin

There are tons of threads on here of guys with Centri blowers on rather stock engines making minimum 600 whp.

Corvette4ever

E85

MrMiami

those are great numbers! Late Model Racecraft gets between 540-550 with the same package. You have the injectors for the E85, you’ll dump fuel twice as fast though. You sure 563 is not enough?

White1337

DSX Aux fuel pump w/ 320 lph is highly recommended. Buy their e85 flex sensor while you are there. That will get you over 600 whp which is very comfortable. Xpipe is nice. This is my setup for 700~ whp:
A&A v3 si
3.47" upper pulley ~7psi
GPI ss3 cam 32% lobe
10.25:1 GPI pistons w/ hardened rods
Kooks catless headers & xpipe
DSX aux fuel pump
flex fuel, tuned for e50
LT4 injectors & LT4 HPFP

Josh@AandASuperchargers

You might bounce this off your Tuner, but ask if you can pulley down to 3.6" for 2 more psi and retune it. That should get you to 600 rwhp and I assume you have 93 octane out your way. We recommend stay at or below 600 rwhp on stock pistons and pump gas only. Anything higher we recommend more octane from Meth or E85.