Help with mods please
Thread Starter
Instructor
Joined: Jun 2006
Posts: 222
Likes: 1
From: Rapid City SD
Help with mods please
Hi all:
My name is Mike, I just aquired a 99 C5 Automatic that is bone stock, and would like to start doing some mods. I'd like to do the exhaust first. Can anyone recommend a good set of bolt on headers(no welding) that won't scrape and a good cat back system that will not emit that "drone" at cruise rpm? Also, has anyone had any experience with SLP 1.85 rockers? Are they worth it?
Thanks in advance,
Mike
My name is Mike, I just aquired a 99 C5 Automatic that is bone stock, and would like to start doing some mods. I'd like to do the exhaust first. Can anyone recommend a good set of bolt on headers(no welding) that won't scrape and a good cat back system that will not emit that "drone" at cruise rpm? Also, has anyone had any experience with SLP 1.85 rockers? Are they worth it?
Thanks in advance,
Mike
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
I advise you to get real longtubes in stainless steel. Either LG, or Dynatech, and either the offroad X pipe, or the system with high-flow cats. About the best flowing, and still non droning catback is the ZO6 Ti. It's a bit louder than the stock 'Vette cb, but not excessive.
Burning Brakes
Joined: Feb 2006
Posts: 899
Likes: 2
From: Ex BX... Ex NJ... Hello CT!!! CT
I just did Corsa Indy's....
American Racing (l/t) headers, x pipe w/ hi flow cats.... But you should also look at getting a CAI (Cold Air Intake) installed too. Either a Callaway or Vararam should do the trick just fine.
DOn't forget the tune...... Good luck
American Racing (l/t) headers, x pipe w/ hi flow cats.... But you should also look at getting a CAI (Cold Air Intake) installed too. Either a Callaway or Vararam should do the trick just fine.
DOn't forget the tune...... Good luck
Melting Slicks
Joined: Jun 2003
Posts: 2,156
Likes: 0
From: S.W. Ohio
You are going to get alot of header responses si here is mine. Melrose LT's with Random Cats and X-pipe did wonders for my car.
I myself would skip the 1.85 rockers. If you do a cam swap later down the road most of the cams suggest that you not use this ratio due to faast ramp rates of the XER lobes. Instead of the rockers I would buy a used LS6 intake (I got my from the Parts section for 350) and install it with the headers. These two above items really added alot to my car. I have run a best of 12.20@115 with LT's and LS6 intake, given I do have a MN6 which helps some.
Good luck and post results.
I myself would skip the 1.85 rockers. If you do a cam swap later down the road most of the cams suggest that you not use this ratio due to faast ramp rates of the XER lobes. Instead of the rockers I would buy a used LS6 intake (I got my from the Parts section for 350) and install it with the headers. These two above items really added alot to my car. I have run a best of 12.20@115 with LT's and LS6 intake, given I do have a MN6 which helps some.
Good luck and post results.
Race Director
Joined: Apr 2001
Posts: 19,329
Likes: 16
From: Saint Augustine, FL
Mid-TN Events Coordinator
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
Originally Posted by ROJO99
You are going to get alot of header responses si here is mine. Melrose LT's with Random Cats and X-pipe did wonders for my car.
Race Director
Joined: Jul 2005
Posts: 12,037
Likes: 3,573
From: Central MO
Originally Posted by zeevette
I advise you to get real longtubes in stainless steel. Either LG, or Dynatech, and either the offroad X pipe, or the system with high-flow cats. About the best flowing, and still non droning catback is the ZO6 Ti. It's a bit louder than the stock 'Vette cb, but not excessive.
I've got the Dynatech system and Z06 mufflers. They are quiet on the road and at idle but get pretty loud when you get on the gas.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Burning Brakes
Joined: Apr 2006
Posts: 833
Likes: 1
From: long island NY
St. Jude Donor '06
mods
I would use any of these headers...
LG motorsports, Kooks,TSP, OR American Racing
if emissions is not a big deal where you are you could get an off road x and save a buch of money if not get hi flow cats and an x pipe to accomodate them, I personally dont like the ZO6 TI exhaust, I had it and it was just too quiet... Although now I have SLP loud mouth and that is just too loud with lots of drone, I strongly reccomend either the Borla stingers OR Corsa pace car
LG motorsports, Kooks,TSP, OR American Racing
if emissions is not a big deal where you are you could get an off road x and save a buch of money if not get hi flow cats and an x pipe to accomodate them, I personally dont like the ZO6 TI exhaust, I had it and it was just too quiet... Although now I have SLP loud mouth and that is just too loud with lots of drone, I strongly reccomend either the Borla stingers OR Corsa pace car