What size is the stock y-pipe slip to cat?
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Senior Member
Joined: Dec 1999
Posts: 954
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From: Annandale, VA
Car: 1991 Formula Firebird
Engine: 2001 LS1 Modded
Transmission: 2001 4L60E Yank SS3600 TC
What size is the stock y-pipe slip to cat?
Hi Guys,
I am getting ready to order my cat. I am probably going with 3" inlet and outlet. I know the shop will have to fabricate a slip for the inlet.
However, I did find a vendor that is willing to ship a conversion slip fitting. I am not sure of the size of the factory slip. Is it 2.25 or 2.5? I have a 1991 factory 305 with tune port.
Thanks,
BILL
I am getting ready to order my cat. I am probably going with 3" inlet and outlet. I know the shop will have to fabricate a slip for the inlet.
However, I did find a vendor that is willing to ship a conversion slip fitting. I am not sure of the size of the factory slip. Is it 2.25 or 2.5? I have a 1991 factory 305 with tune port.
Thanks,
BILL
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