LT1-LT4 Modifications 1993-97 Gen II Small Block V8

exhaust expectations

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Old Mar 1, 2006 | 01:03 AM
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rbobryk20's Avatar
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Default exhaust expectations

Right now i have shorties an offroad y, and magnaflow exhaust. I jsut got a new job and a lil extra money so i think im going to do it the right way and do some long tubes, an offroad H-pipe and a pair of mufflers/bullets. I am pretty set on getting pacesetters and wrapping then in header wrap and just ordering the h pipe kit and welding/fabbing it up. My questions are:

1. What kind of gains are we looking at in the 1/4. Right now i trap 108 is it realistic to expect almost 2mph out of this?

2. I understand that it will be loud and that is what i am going for but what is going to have the least amount of annoying loud. IE drone and raspyness... If i wanted raspy i would just buy the loudmouth.

3. Any change in driveability.. will having such an open exhaust w/ the TD's affect my low end enough that i can tell in the "Feel" of the car.

Thanks for the answers in advance... Any reccomendations on mufflers/bullets would be great... I can fab just about anything up to fit and ground clearance isn't the biggest issue just can't be rediculous.
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Old Mar 1, 2006 | 03:01 AM
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also any soundclips/Dyno graphs of LT1's w/ TD's would be great.
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Old Mar 1, 2006 | 06:56 PM
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Originally Posted by rbobryk20
Right now i have shorties an offroad y, and magnaflow exhaust. I jsut got a new job and a lil extra money so i think im going to do it the right way and do some long tubes, an offroad H-pipe and a pair of mufflers/bullets. I am pretty set on getting pacesetters and wrapping then in header wrap and just ordering the h pipe kit and welding/fabbing it up. My questions are:

1. What kind of gains are we looking at in the 1/4. Right now i trap 108 is it realistic to expect almost 2mph out of this?

2. I understand that it will be loud and that is what i am going for but what is going to have the least amount of annoying loud. IE drone and raspyness... If i wanted raspy i would just buy the loudmouth.

3. Any change in driveability.. will having such an open exhaust w/ the TD's affect my low end enough that i can tell in the "Feel" of the car.

Thanks for the answers in advance... Any reccomendations on mufflers/bullets would be great... I can fab just about anything up to fit and ground clearance isn't the biggest issue just can't be rediculous.
Pacesetters are ceramic coated aren't they? If so I would not recommend doing the header wrap at all. LTs are good for about 14 - 17 hp, depending on your engine setup something like Kooks stepped headers can provide a little more hp over most LTs supposedly. ls1sounds.com has a ton of files like your wanting. You'll notice the "seat of the pants" hp and as for driveability it'll just sound much better. You probably knew this already but you'll need 02 simms for the AfterCATs, Jegs/Summit has them & you'll also need a pair of 02 extensions for the Pre-CATs, Jegs has these as well.
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