High flow cats?
Thread Starter
Advanced
Joined: Aug 2009
Posts: 77
Likes: 0
High flow cats?
Alright guys, after my excessive heat issue that advisors had lead me to my cats on, what are the recomendations for highflow cats with a stock exhaust manifold setup? Bolt ups would be nice, but I guess if I'm going to do my cats I should also look at the header choices as well so suggestions on longtubes and cats for that route would be appreciated also.
Pro
Joined: Jun 2005
Posts: 560
Likes: 0
From: Lovettsville VA
I stuck with the stock cats on mine but then again, i'm running hooker shorty headers and there's talk that there's barely a difference in power increase. for the extra $$$ on hi flow, it's not with it to me. Going with RR for the boost instead.long tubes will get you the most power output and you could bolt on some random tech cats. Eastern performance makes a good set of bolt on hf cats if you go that route and stay stock.
Le Mans Master
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
Le Mans Master
Joined: May 1999
Posts: 6,517
Likes: 1,304
From: Windermere FL
Each situation is different. I ran gutted stock cat on my 90 with Hooker long tube headers. After many years, I finally bit the dust and went with two high flow cats and they converted it to true dual exhaust. Cost about $500 - best $ I ever spent. Cat technology has improved in the last 20 years immensely. It runs so much better and sounds so much better.
But each car is different.
But each car is different.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
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
Instructor
Joined: Jan 2009
Posts: 170
Likes: 1
From: Crofton MD
Each situation is different. I ran gutted stock cat on my 90 with Hooker long tube headers. After many years, I finally bit the dust and went with two high flow cats and they converted it to true dual exhaust. Cost about $500 - best $ I ever spent. Cat technology has improved in the last 20 years immensely. It runs so much better and sounds so much better.
But each car is different.
But each car is different.
Le Mans Master
Joined: May 1999
Posts: 6,517
Likes: 1,304
From: Windermere FL
On my 90 they fit. The hi performance cats they put in are cylindrical (unlike the original cats). They mounted them staggered one a little forward and one a little back so it does not take much room at all. They cut the Y pipe forward of where the two pipes combine into one and cut the rear pipe similarly. Added small sections of pipe and welded it all together. No problem at all.
Instructor
Joined: Jan 2009
Posts: 170
Likes: 1
From: Crofton MD
On my 90 they fit. The hi performance cats they put in are cylindrical (unlike the original cats). They mounted them staggered one a little forward and one a little back so it does not take much room at all. They cut the Y pipe forward of where the two pipes combine into one and cut the rear pipe similarly. Added small sections of pipe and welded it all together. No problem at all.