Making a y-pipe 2.25" or 2.50" ?
Thread Starter
Joined: Dec 2007
Posts: 1,924
Likes: 12
From: Minnesota
Car: 84 camaro, 88 trans am, 98 camaro
Engine: Modded , stock, LSX modded
Transmission: 700r4, 700r4, t-56
Axle/Gears: 327, 308, 373
Making a y-pipe 2.25" or 2.50" ?
Cars lowered, has LT headers, 3" ID cat-back system. iv been leaning towards 2.25" but i was told to maybe go 2.50" since it wouldn't cost a whole lot more to go a bit bigger, but i was thinking maybe it might hurt my torque down low. i will go with oval tubing most likely in some areas to gain extra ground clearance.
anyone wanna add some input?
anyone wanna add some input?
Thread Starter
Joined: Dec 2007
Posts: 1,924
Likes: 12
From: Minnesota
Car: 84 camaro, 88 trans am, 98 camaro
Engine: Modded , stock, LSX modded
Transmission: 700r4, 700r4, t-56
Axle/Gears: 327, 308, 373
Re: Making a y-pipe 2.25" or 2.50" ?
anyone?
Joined: Jun 2002
Posts: 13,576
Likes: 30
From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: Making a y-pipe 2.25" or 2.50" ?
what's the combo and what size will the intermediate pipe be?
Thread Starter
Joined: Dec 2007
Posts: 1,924
Likes: 12
From: Minnesota
Car: 84 camaro, 88 trans am, 98 camaro
Engine: Modded , stock, LSX modded
Transmission: 700r4, 700r4, t-56
Axle/Gears: 327, 308, 373
Re: Making a y-pipe 2.25" or 2.50" ?
collectors are 3" everything back is 3" ID
Joined: Jun 2002
Posts: 13,576
Likes: 30
From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: Making a y-pipe 2.25" or 2.50" ?
rest of the motor stock? plans to go bigger any time soon?
Thread Starter
Joined: Dec 2007
Posts: 1,924
Likes: 12
From: Minnesota
Car: 84 camaro, 88 trans am, 98 camaro
Engine: Modded , stock, LSX modded
Transmission: 700r4, 700r4, t-56
Axle/Gears: 327, 308, 373
Re: Making a y-pipe 2.25" or 2.50" ?
all be sticking with the sbc's nothing bigger then a 5.7L
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Joined: Jun 2002
Posts: 13,576
Likes: 30
From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: Making a y-pipe 2.25" or 2.50" ?
if we're talking basic stockish builds, than i see no need to go to a 2.5" pipe if you're having trouble packaging it. the 2.25" pipe should help keep collector scavenging up, thus increasing velocity, which helps to build torque.
Thread Starter
Joined: Dec 2007
Posts: 1,924
Likes: 12
From: Minnesota
Car: 84 camaro, 88 trans am, 98 camaro
Engine: Modded , stock, LSX modded
Transmission: 700r4, 700r4, t-56
Axle/Gears: 327, 308, 373
Re: Making a y-pipe 2.25" or 2.50" ?
how about something around 400bhp?
Supreme Member
Joined: Apr 2009
Posts: 2,852
Likes: 2
From: Scottsdale, AZ
Car: 89 GTA/93 S13/91 Si
Engine: 5.7 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: Making a y-pipe 2.25" or 2.50" ?
im only making like 260rwhp and i have 1.75 inch headers to 2.5in to dual cats to 3inch to 2.5in to muffler and 2.5 inch out the back to 3.5" tips 
mine sounds okay and does the job
mine sounds okay and does the job 
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