supercharger/headers
Pro
Joined: Jun 2022
Posts: 691
Likes: 317
From: NW OH
I would say catted but I'm an eco-friendly. Also I hate the smell of raw exhaust cars, the modern aftermarket cats work well and are also not expensive or heavy, you barely lose any power.
Only time no cats make any sense is 100% race car.
Only time no cats make any sense is 100% race car.
Melting Slicks
Joined: May 2013
Posts: 2,998
Likes: 1,414
From: New Jersey
2025 Corvette of the Year Finalist - Unmodified
2024 C2 of the Year Winner - Unmodified
2024 C1 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2023 C5 of the Year Winner - Unmodified
St. Jude Donor '25
Def go with high-flow cats.
Administrator
Joined: Mar 2001
Posts: 367,781
Likes: 24,683
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
I would recommend going with a catted system. Really no loss of power to speak of with the cats.
Le Mans Master
Joined: Oct 2005
Posts: 7,267
Likes: 436
From: Texas Where God intended me to be.
2023 Corvette of the Year Finalist - Unmodified
2022 C5 of the Year Winner - Unmodified
Cruise-In X Veteran
St. Jude Donor '08 thru '11,'22 thru '26
I have American Racing Headers on mine with their high flow cat system. never had a problem and I'm supercharged.
Supporting Vendor
Joined: Jul 2010
Posts: 8,541
Likes: 888
From: Republic of Texas
Drifting
Joined: Aug 2014
Posts: 1,395
Likes: 390
From: Virginia
St. Jude Donor '18
If you are certain you are going with forced induction, go with the bigger diameter tubes. That's what I did with mine incase I do forced induction one day. You are going to be jamming more fuel in there, likely a lopey cam, and when there is more raw fuel squeaking by at idle, it's going to smell up your car and your clothes.
Go with the high flow cats.
Go with the high flow cats.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Drifting
Joined: Jul 2004
Posts: 1,654
Likes: 674
From: Pingree Grove IL
I vote Catted xpipe
as far as a supercharger cam, I would do a lower lift cam, something in the .550 range to save the valvetrain. You will still be able to bring her up to 6400-6500 RPM, which is plenty for the street. Cam plus blower plus headers, I’m thinking around 575-600 at the wheels if you have a 6m.
street tires might be useless through 1st and 2nd gear, others can probably chime in on that one.
Bottom end is probably on borrowed time with 600wheel. Good luck. Post up some results.
as far as a supercharger cam, I would do a lower lift cam, something in the .550 range to save the valvetrain. You will still be able to bring her up to 6400-6500 RPM, which is plenty for the street. Cam plus blower plus headers, I’m thinking around 575-600 at the wheels if you have a 6m.
street tires might be useless through 1st and 2nd gear, others can probably chime in on that one.
Bottom end is probably on borrowed time with 600wheel. Good luck. Post up some results.
Racer
Joined: Apr 2019
Posts: 303
Likes: 117
From: Central PA
2024 C5of the Year Finalist - Unmodified
Advanced
Joined: Sep 2020
Posts: 73
Likes: 18
From: Prague, Czech rep., EU