This is a discussion on LT1 Cats within the LT1 forums, part of the Vehicle Specific category; Is it hard to do a conversion of stock lt1 with single cat to long tubes headers with double hi-flow ...
05-19-2007, 04:08 PM #1
Is it hard to do a conversion of stock lt1 with single cat to long tubes headers with double hi-flow cats??? I heard that the single cat is very restrictive.
05-19-2007, 05:38 PM #2
I wouldn't think it would be too difficult. Just attach the cats right after the collectors of the LT's. Not sure, but you might be cramped for space on the driver's side though since it wasn't originally designed for dual-cats. But I wouldn't worry about it though, it won't make that much of a difference.
05-19-2007, 09:09 PM #3
pretty much only 1 company out there makes preformed dual hiflow cat ypipes and they are designed for stock/stock compadible exhuast manifolds/headers ie short tubes.... as far as i have come across anyway. fortunatly exhuast fabrication is cheap
05-20-2007, 08:15 AM #4
BlackLT1Z28, i suppose you have LT's with ORY so you dont have the cats room issues?
05-24-2007, 12:57 PM #5
I don't think going with dual cats over a single cat will make much of a difference on the street though.
05-24-2007, 01:25 PM #6
06-04-2007, 04:57 PM #7
- Join Date
- Jun 2007
- loyall ky
black, and black
- 04 M6
according to gms specs the single cat cars were rated at 275hp and the 96 97 dual cats were rated at 285 hp so you would think a 10 hp difference with dual cats, just a suggestion try to buy 2 resonators from someone with a gto whose cut them off so at visual inspection it will appear to have cats
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