Anyone have Random Tech. Cats?
Thread Starter
Race Director
Joined: Aug 2003
Posts: 11,043
Likes: 3
From: San Jose Pat Tillman - American Hero
Anyone have Random Tech. Cats?
I'm thinking of getting these as my next mod for my LT4, but I'm wondering if anyone has 1st-hand experience with them? Dyno proven results would be nice, but SOTP reactions are fine too! Thanks in advance.
Also - what's the best place to buy these things?
Also - what's the best place to buy these things?
Thread Starter
Race Director
Joined: Aug 2003
Posts: 11,043
Likes: 3
From: San Jose Pat Tillman - American Hero
That's what I was thinking... I believe I'll need 2 cats for the LT4, so I imagine the price will be higher, but I wanna do everything I can for more power here in CA while still being smog legal.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Originally Posted by Perfusion
That's what I was thinking... I believe I'll need 2 cats for the LT4, so I imagine the price will be higher, but I wanna do everything I can for more power here in CA while still being smog legal.
The LT4, like the LT1, has just two cats, one on each bank.
I am interested in new cats, too. Not right now, but down the road.
Bench Racer
Joined: Feb 2003
Posts: 4,201
Likes: 15
From: Palm Beach Gardens FL
St. Jude '03 thru 14,'25
Originally Posted by STL94LT1
The factory LT4 cats flow pretty well. I don't think you will see much of a horsepower increase with Random tech cats. Especially on a near stock engine.
Le Mans Master
Joined: Jun 2002
Posts: 6,097
Likes: 2
From: Cincinnati Oh
There was test done by someone on the ls1 forum (I use to have the link but not anymore) that tested cats. The RT were did not flow as good as Carsound and few others. The RT metal metrax (sp?) did flow alot better, but were by far more expensive. From eveything I have ever read on them, the regular RT cats are not worth the money unless you absolutely need them because of spacing issues.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
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
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
The RT Metallic substrate cats will far outflow the Car Sound ceramic cats. Also they are the most expensive of the RT line up. But thanks to supply and demand there is an alternative to the RT cats now. Go to:
www.dynatechheaders.com
And check out their MetalCat line up. They now offer a 3" metallic cat that flows the same and has the same core as the RT cats. And don't let them tell you any different because there are only a couple companies making the substrates and both of them are in Europe
These cats can be had from JEGS for less than $150 which is a far cry from what RT gets for them!
www.dynatechheaders.com
And check out their MetalCat line up. They now offer a 3" metallic cat that flows the same and has the same core as the RT cats. And don't let them tell you any different because there are only a couple companies making the substrates and both of them are in Europe
These cats can be had from JEGS for less than $150 which is a far cry from what RT gets for them!
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
You will need two, and being in California I'm not sure if you have many options other than the direct-replacements cats. The bullet cats are a bit cheaper, the direct-replcacemnet cats are meant to work with your stock exhaust manifolds. MORE Performance has them, but they are about $600 for the pair...kinda pricey for probably a negligable gain in power.
Race Director
Joined: Jun 2000
Posts: 13,128
Likes: 0
From: Oakland CA
St. Jude Donor '03
Originally Posted by Zix
You will need two, and being in California I'm not sure if you have many options other than the direct-replacements cats. The bullet cats are a bit cheaper, the direct-replcacemnet cats are meant to work with your stock exhaust manifolds. MORE Performance has them, but they are about $600 for the pair...kinda pricey for probably a negligable gain in power.
that you can't put any cat on as long as it's as clean as OEM.
Racer
Joined: Oct 2002
Posts: 494
Likes: 0
From: Victoria BC
I have the cats because one my stock cats became blocked somehow. The are a nice piece but I don't think you will get any power on a stock engine. Also, it does come with a cali green emisions card. I have not looked at mine since I bought them not being from there. I'm sure Rt could fill you in on that. 
Burning Brakes
Joined: Feb 2004
Posts: 1,231
Likes: 0
From: edmonton ab
Originally Posted by tjwong
The RT Metallic substrate cats will far outflow the Car Sound ceramic cats. Also they are the most expensive of the RT line up. But thanks to supply and demand there is an alternative to the RT cats now. Go to:
www.dynatechheaders.com
And check out their MetalCat line up. They now offer a 3" metallic cat that flows the same and has the same core as the RT cats. And don't let them tell you any different because there are only a couple companies making the substrates and both of them are in EuropeThese cats can be had from JEGS for less than $150 which is a far cry from what RT gets for them!
www.dynatechheaders.com
And check out their MetalCat line up. They now offer a 3" metallic cat that flows the same and has the same core as the RT cats. And don't let them tell you any different because there are only a couple companies making the substrates and both of them are in Europe
These cats can be had from JEGS for less than $150 which is a far cry from what RT gets for them!
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Originally Posted by Perfusion
I'm thinking of getting these as my next mod for my LT4...
There may be some HP from swapping out the stock cat on an L98, but not on an LT1/4.
Eric
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by SurfnSun
I got two 3" Dynatech metallics from Texas Speed(supporting vendor) for $220.
Race Director
Joined: Mar 1999
Posts: 12,594
Likes: 237
From: Bartlett Illinois
Originally Posted by DAVE396LT1
Are all the Dynatech cats the metallic kind? They -compare- to ceramic, but don't indicate what they are.
I asked the Dyantech rep. when they were at Bloomington Gold. they Are metallic, I also have a pair on my 89 now. Although the exhaust is 90% custom