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4" cat?

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Old 09-27-2004, 04:34 PM
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Car: 88 Trans Am
Engine: 5.7 TPI
Transmission: 700r4
4" cat?

Does anyone make a 4" cat? If not...is it fabricatable?
Old 09-27-2004, 07:30 PM
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
4" cats do exist but are not needed unless you are pushing over 500+ at the wheels.
Old 09-28-2004, 07:17 AM
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Car: 88 Trans Am
Engine: 5.7 TPI
Transmission: 700r4
Where can I find them?

I just might be pushing over 500 when all is said and done...I have almost a new everything waiting to go into my car right now...including a 406 which is either going to be stroked or receive a power adder.

But regardless...my new exhaust is 4"...so I'm looking for a 4" cat,..because going down to a 3" one would entirely defeat the purpose of the 4" exhaust.
Old 09-28-2004, 08:17 AM
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Car: '90 RS
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I would check out various manufacuters web sites and see what they offer. I would check out carsound, cat-co, random technologies, magnaflow, dynomax and untrasound.
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