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Are LT1 and LS1 cat-backs the same?

This is a discussion on Are LT1 and LS1 cat-backs the same? within the External Engine forums, part of the LSx Technical Help Section category; I plan on buying a magnaflow cat-back, but he had it on a LT1. Im pretty sure there the same ...

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    Member T/A36's Avatar
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    Are LT1 and LS1 cat-backs the same?

    I plan on buying a magnaflow cat-back, but he had it on a LT1. Im pretty sure there the same just thought i would make sure. THANX

    Travis

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    the point where the i-pipe travels down the driveshaft tunnel is the same. for the LS1, the y-pipe connects to the i-pipe in the tunnel. for the LT1, the y-pipe connects to the i-pipe over on the passenger side.
    Cold Air Intake, Muffler Delete, Vinci High Performance Dual Valve Springs, Hardened Pushrods, Yella Terra 1.85 Rockers, Some Hydropdipped Stuff, Strut Tower Brace, Some SS Badges, boost/vacuum gauge, fuel pressure gauge

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    Member T/A36's Avatar
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    So what could i do to make it fit?

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    just cut it back to where your factory y-pipe will meet it at is all.

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    Quote Originally Posted by T/A36 View Post
    I plan on buying a magnaflow cat-back, but he had it on a LT1. Im pretty sure there the same just thought i would make sure. THANX

    Travis
    If it was a cat-back from a 97 or some 96's, you will have no problems because it will be the same.

    What year F-body is the cat-back off of?

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    Moderator Firebirdjones's Avatar
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    Also the hangers at the rear tailpipe area are slightly different. Easy enough to adapt though. There is even a kit available to adapt the older style hanger to the newer one,,,something like $25 or so.

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    Member T/A36's Avatar
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    Quote Originally Posted by 9t8z28 View Post
    If it was a cat-back from a 97 or some 96's, you will have no problems because it will be the same.

    What year F-body is the cat-back off of?

    Im not sure, he said it will fit an ls1 perfect so im guessing 97 then.

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