c6 grand sport ls3

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Nov 30, 2019 | 01:07 PM

coach3

Thread Starter

7th Gear

Joined: Feb 2016

Posts: 7

Likes: 0

From: nederland, texas

c6 grand sport ls3

i have a c6 grand sport ls3. great car, love it. ready to do some perforamance things to it. not going with the super charger. wanted to get as much horsepower, and stilll be able to drive it on trips with my club, just dont know what parts are best. thinking about long tube headers, cam, cold air intake, exhaust, and a dyno tune. any suggestions on the brands, and specs is best? its an auto trans. 37,000 miles on it.

Last edited by coach3; Nov 30, 2019 at 06:28 PM.

Nov 30, 2019 | 02:42 PM

Spaceme1117

Safety Car

Joined: May 2016

Posts: 4,676

Likes: 1,856

From: Erlanger, Kentucky

Quote:

Originally Posted by coach3

Supercharger is a great way to go for a ton of power without affecting driveability.

Long tube header from LG, Kooks, ARH, Stainless works are all excellent. I prefer Kooks. Skip any kind of aftermarket intake; waste of money. Your GS/Z06 style intake is excellent. Get a shroud for it.

Exhaust won't add any power but will affect the sound. Personally, I like the sound of my Kooks longtubes with catted x-pipe going to my factory NPP exhaust with a Mild to Wild switch.

A good dyno tune from a reputable shop. You will have to search for who is around in your area

As for a cam, so many options out there. You just have to define your goals. If you have an auto trans, that will limit your options unless you are willing to go with a higher stall torque converter.

My personal setup is an Edelbrock E-force with a 3.5" pulley, Kooks long tubes through the NPP exhaust, Monster LT1-S twin disc clutch, factory cam. 520 wheel hp and 520 wheel tq. I will eventually go with a larger cam and injectors to get to 600 wheel hp.

Nov 30, 2019 | 03:20 PM

Gray Ghost GS

"AlohaC5" Senior Member

Joined: Jun 2003

Posts: 3,562

Likes: 44

From: Madison, AL

coach3, complete your forum profile to include your location, so we can make specific recommendations, e.g., performance shops in your area that can dyno/street tune and provide other services.

What is your approx. performance mod budget? Do you plan to do any high performance driving events with the car, e.g, high performance driver education (HPDE), drag racing, auto-cross, etc.?

If you don't want to change the engine internals, then a supercharger like the Edelbrock E-force is a good option with supporting bolt-on's like headers. If ok, then you could do a cam with headers.

Good luck and enjoy the C6 Grand Sport. I have a 2013 GS. Awesome car.

Nov 30, 2019 | 05:59 PM

old motorhead

Le Mans Master

Joined: Dec 2005

Posts: 7,002

Likes: 1,687

From: Southeast TX

My goals were similar to yours. I wanted the most n/a power I could get without breaking the bank. Also wanted near perfect manners and decent fuel eco. Here's what I came up with: https://www.corvetteforum.com/forums...cam-build.html If I had to do it over, I wouldn't change a thing. I think it came out rather well.

Nov 30, 2019 | 06:32 PM

LOURDESBELLE

Burning Brakes

Joined: Dec 2018

Posts: 898

Likes: 542

From: Ivanho,Illinois

2025 C6 of the Year Finalist - Modified

I love my 2013 GS as well. I have no intentions of racing/ tracking the car. But still want a little more power than what the factory built. So I added a supercharger and it’s putting out more power than I ever expected.. 600+whp. And that’s with stock exhaust! I love it!