2.25 or 2.5??
Thread Starter
Junior Member
Joined: Feb 2003
Posts: 85
Likes: 0
From: Québec,Canada
Car: Trans Am 87
Engine: 305 soon to be 350
Transmission: 700R4 soon to be T5
2.25 or 2.5??
Hi...my question is...2.25 inch or 2.5 is the best for dual exhaust...my project in progress is a 350 that will reach 450 HP and maybe more...is 2.25 is too little or...2.5 is too bigger....
thnx for the info...and tell me what is the best dual exhaust setup if you want and already try this!!
thnx for the info...and tell me what is the best dual exhaust setup if you want and already try this!!
Supreme Member
Joined: Dec 2002
Posts: 2,564
Likes: 1
From: Central FL
Car: 91 Camaro
Engine: 3.1...not hardly stock
Transmission: 700r4....not stock either
Axle/Gears: 3.73
i don't have many suggestions for you except go with 2.5" duals, 2.25 won't be nearly big enough for that HP.
Supreme Member
iTrader: (5)
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
go with 2.5" it'll be more than enough. i have that setup on my camaro now.
Thread Starter
Junior Member
Joined: Feb 2003
Posts: 85
Likes: 0
From: Québec,Canada
Car: Trans Am 87
Engine: 305 soon to be 350
Transmission: 700R4 soon to be T5
Ok thnx guys!! i'll go with 2.5"!! i've already remove the rest of my exhaust...im running on my shorties and 3 feet of tubes now...the sound is unbelievable!!! my car is now a dragster!! 
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