will a 2.5 inch dia. y pipe handle 300 hp?
Thread Starter
Junior Member
Joined: Feb 2004
Posts: 81
Likes: 0
From: EAST TX
Car: 91 camaro
Engine: 350
Transmission: auto 700r4
will a 2.5 inch dia. y pipe handle 300 hp?
my car has a beefed up 350 in it and hedders, but the people that put the exhaust on it put a 2.5 inch y pipe from the hedders to the converter and from there back a 3 inch pipe. The 2.5 inch pipe is only about 2 feel long, but I am going to get my car tuned soon and dont want to loose power because of a stupid 2.5 inch pipe. I am guessing my car will make around 300 to 330hp at the flywheel. Is the 2.5 inch pipe to small?
Supreme Member
Joined: May 2003
Posts: 1,995
Likes: 0
From: Toledo, OH
Car: 1992 Firebird
Engine: forged 357
Transmission: 700r4, 2200-2400 stall, vette servo
Axle/Gears: stock pegleg 2.73 drum (temp)
no reason why it wouldn't "handle" it... it just isn't optimal. backpressure.
Thread Starter
Junior Member
Joined: Feb 2004
Posts: 81
Likes: 0
From: EAST TX
Car: 91 camaro
Engine: 350
Transmission: auto 700r4
found on the internet that flowmaster suggest a 3 inch single pipe for a 350 motor making 300 to 350hp.
Last edited by ar_mcadams; Jan 18, 2005 at 11:09 PM.
Joined: Feb 2001
Posts: 13,752
Likes: 560
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
It will suffice. LT1 cars came with a 2.5" y-pipe and they make 300hp. As token said, not optimal and slightly restrictive, but will work.
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