long or short Y pipe?? on 3inch tubbing
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Joined: Nov 2003
Posts: 343
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From: Montréal
Car: GTA WS-6 1989 fully loaded
Engine: 1995 9C1 LT1 police pak XE cam
Transmission: t-5 borg warner
long or short Y pipe?? on 3inch tubbing
hi im about to join my 3inches inlet and twin 3inches outlet to my dynomax shortty headers my stock piping was 2,25 and double
cat to a single 2.5 pipe to muffler now what should i go for???
a long twin exaust with double cat that come to 3inches jus at the entery of the muffler or go in 3 inches as soon as possible after headers????pic if possible help me!!
cat to a single 2.5 pipe to muffler now what should i go for???
a long twin exaust with double cat that come to 3inches jus at the entery of the muffler or go in 3 inches as soon as possible after headers????pic if possible help me!!
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The factory pipe after dual cats should have been 2.75".
Anyway, I'd stick with dual cats if I already had them. Single 2.25" or 2.5" pipe from each header to each cat, then "Y" together to 3" after the cats.
Anyway, I'd stick with dual cats if I already had them. Single 2.25" or 2.5" pipe from each header to each cat, then "Y" together to 3" after the cats.
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