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Print in friendly format Send this term to a friend  L98
The GM designation for the 5.7 liter, (350 cubic inch), TPI motor. This motor was used in other GM vehicles, but was used in the Corvette from 1985 t...
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Re: Need help with catalytic selection

Subject: Re: Need help with catalytic selection
by bogus on 2016/8/22 15:49:55

Quote:

Matatk wrote:
Honestly it's not new territory.

LT1 cats will not fit the L98 correctly, it's been attempted.

Aftermarket cats are fine for your application.


why is that? The manifold must then be different. The LT1 manifolds dump in the middle, and go straight down. If the L98 manifolds do anything else, it would cause a fitment problem at the transmission. Otherwise, I can't see why they won't fit...

However, the LT1 cats do flow very nicely. That would not be a problem.


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