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

mid-leath headers

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Old Sep 19, 2006 | 04:59 PM
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Default mid-leath headers

how restrictive (sp?) are the factory LT1 headers (manafoils)?????



what kind of HP am i looking to get with them?

thanks

Last edited by 95formulalt1; Sep 19, 2006 at 09:36 PM.
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Old Sep 19, 2006 | 05:04 PM
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About 12-15 hp, and 18-22 Tq.
On an LT1, the stock exhaust manifold (headers) are very restrictive.
Anything is a great improvement... Mids will wake your car up alot. Id say about .2-.3 tenths, if you have a nice exhaust to complement them.
I recommend the Pacesetter Mid's w/ Armor Coat, but there's other good choices too.

LT's can give more torque and hp then mids, but sometimes not by as much as you would think.

( This is what ive gathered from many poeple and are mainly averages, all RWHP )

Last edited by burnzilla; Sep 19, 2006 at 05:10 PM.
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Old Sep 19, 2006 | 05:14 PM
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ya thats what i got and i have a hooker cat back now
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Old Sep 19, 2006 | 05:32 PM
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just bought them

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Old Sep 19, 2006 | 05:34 PM
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theyre way better than shorties, but you shoulda got longtubes.
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Old Sep 19, 2006 | 05:35 PM
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didnt want to deal with them. these will just boilt on. LTs r not street legal. well emmisn wise there not
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Old Sep 19, 2006 | 06:27 PM
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The legality issue is a technicality. there are definitely shops out there that will pass a car with longtubes. You will never get a ticket or anything like that for having LTs. Also i would estimate no more than 1 hour extra on my install time for going with LTs. I had to unmount the passenger side of the engine. that involved removing one bolt and jacking the motor up, and replacing. 80% of the work is getting the factory stuff out.
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Old Sep 19, 2006 | 06:29 PM
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cant wait to install them
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Old Sep 19, 2006 | 06:42 PM
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15-20 at the wheels is what i was told for HP. i hope the car sound better with them to
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Old Sep 19, 2006 | 06:45 PM
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long tubes are legal and you can keep your emissions hookups. so the legality is not an issue with them at all as long as you maintain your emissions hookups and keep your cats on the car. im not sure what the law is in mass but here if you have a 95 or lower(obd1) you dont have to have any emissions restrictions (ie. no cats, no egr, no air, etc). but i have mids and dont really like them that much i wish i would have gone with long tubes but hind sight is always 20/20
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Old Sep 19, 2006 | 07:00 PM
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Originally Posted by borninatransam
long tubes are legal and you can keep your emissions hookups. so the legality is not an issue with them at all as long as you maintain your emissions hookups and keep your cats on the car. im not sure what the law is in mass but here if you have a 95 or lower(obd1) you dont have to have any emissions restrictions (ie. no cats, no egr, no air, etc). but i have mids and dont really like them that much i wish i would have gone with long tubes but hind sight is always 20/20
in some states LTs will not pass visual.
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Old Sep 19, 2006 | 07:59 PM
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+ LTS r too much and i wanted them coated
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Old Sep 19, 2006 | 09:38 PM
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o i only payed $411 shipped. off ebay, they are pacesetter mid leanths, they r coated, come with everything i need to install, BRAND NEW with 3yr warrnty
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Old Sep 19, 2006 | 09:54 PM
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Dont use the gaskets they send you, get better ones.
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Old Sep 19, 2006 | 09:57 PM
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Good choice on the midlengths I gained something like 23rwhp with my mids. Might not be the best for higher hp applications but good enough for what your doin.
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Old Sep 19, 2006 | 10:29 PM
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they almost look like shorties to me, i have the hooker supercomp mids and they seem longer. But i love em
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Old Sep 20, 2006 | 08:13 AM
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Originally Posted by xxxtreme36
they almost look like shorties to me, i have the hooker supercomp mids and they seem longer. But i love em
I did not know hooker made supercomp mids. Do you have a part number, pictures, or something?
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Old Sep 20, 2006 | 08:25 AM
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Originally Posted by borninatransam
long tubes are legal and you can keep your emissions hookups. so the legality is not an issue with them at all as long as you maintain your emissions hookups and keep your cats on the car. im not sure what the law is in mass but here if you have a 95 or lower(obd1) you dont have to have any emissions restrictions (ie. no cats, no egr, no air, etc). but i have mids and dont really like them that much i wish i would have gone with long tubes but hind sight is always 20/20
Not 100% true

Theres been some good threads comparing mid's to longs, to stepped. I couldnt imagine trying to mod a car and worry about staying legal etc.
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Old Sep 20, 2006 | 08:28 AM
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Mids can make some good power. The MAC mids I have claim 28.4 RWHP on their site. So I figure 20 real RWHP is very common.
Originally Posted by 95formulalt1
15-20 at the wheels is what i was told for HP. i hope the car sound better with them to
It should sound better.
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Old Sep 20, 2006 | 11:28 AM
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the only thing thats sucks is i have to wait for them 10-15 days
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