LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Best headers that don't restrict ground clearance?

Old Jan 29, 2003 | 10:03 PM
  #1  
Black94mula's Avatar
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Best headers that don't restrict ground clearance?

MACS perhaps? I wanna do a cam and headers before spring breaks, but i don't wanna sacrifice ground clearance in case i lower it. Also, past the new headers, what is the new exhaust layout? If i do go with MACS, do i then get their y-pipe setup too or does someone else have a better one? Thanks
Old Jan 29, 2003 | 10:30 PM
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Simple, Hooker LTs and a 2-inch lift!!! J/k. Take my advice if you're doing a head/cam swap or you'll regret it. DO NOT get 1 5/8" shorties. I believe that includes BBK/Edelbrocks and MACs. They simply can't flow what your motor needs. I believe ligenfelter makes a nice tri-y mid-length header. Also, though expensive, I hear the Arizona Speed & Marine Long tubes actually have great ground clearance. If you want maximum flow, I'd go the extra step of converting to an LS1-style y-pipe and catback. This y- converges a lot farther back allowing more optimal flow where it's critical. Most companies w/ mid-length and shorties provide you w/ a y-pipe. If you get shorties that have their collector in the same position as the factory manifolds did, Borla makes a good ypipe as well as SLP. On that note SLPs seem to have great flow but are pricey. The benefit, Stainless Steel!!!
Old Jan 29, 2003 | 11:18 PM
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My AS&M's have no trouble with ground clearance and my car was lowered from SLP due to the Bilstein suspension. I also have the Random Tech Y pipe with High flow cats. It is a pricey, but great setup.
Old Jan 30, 2003 | 08:11 AM
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I would say if you want to go with longtubes then I would recommend FLP but if you wanted to stay with shorties then I would go with MACs.
Old Jan 30, 2003 | 09:01 AM
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No LTS only shorties or Mids. I agree do not get 1 5/8. 1 3/4 and which make flows and installs the best. I think in summit they have hooker shorties 1 3/4.
Old Jan 30, 2003 | 09:12 AM
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The Hooker shorties are 1-5/8" I am debating between the MAC and the Hooker shorties. Does any place sell the MAC's ceramic coated?
Old Jan 30, 2003 | 09:51 AM
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Originally posted by 94SLUG
No LTS only shorties or Mids. I agree do not get 1 5/8. 1 3/4 and which make flows and installs the best. I think in summit they have hooker shorties 1 3/4.
can you back your position up?
why not LT's?
why not 1 5/8?

I lost ZERO (yes like the number between -1 and 1) ground clearance with my dynatech long tubes

they sound great and flow well too
13.2@106 with them, catback and gears
Old Jan 30, 2003 | 09:56 AM
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Personally, I don't think you need 1 3/4 headers unless you have had head work done. Just MHO.
Old Jan 30, 2003 | 09:59 AM
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Originally posted by shoebox
Personally, I don't think you need 1 3/4 headers unless you have had head work done. Just MHO.
They way I look at it-
untill they make a cure for the mod buy- why not ?

more seriously, someone on the corvette forums did a before and after dyno.
His bottom end was the same (+-5hp) and after 3500rpms his power gains were pretty nice
JMO though

our exhuast ports realy realy realy suck ***
Old Jan 30, 2003 | 10:04 AM
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I have heard good things about the Dynatech's so far as clearance and performace but nightmares about fit/install; of course you hear that about all headers when they first come out. Thats is what led me to the AS&M/RT setup. No ground clearance issues, lots of previous experience, coated inside and out, and GENERAL agreement that they simply put out the most HP of anything short of long tubes put me into these despite the price. Open them up right at the Y-pipe like I did (straight part of the cutout going out, ypart going to the rest of the system) and it sounds like a nascar stocker, simply the deepest, throatiest sound I have ever heard come out of a car. I have a pre install dyno, I get a post this spring.
Old Jan 30, 2003 | 10:08 AM
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Originally posted by treyZ28
They way I look at it-
untill they make a cure for the mod buy- why not ?

more seriously, someone on the corvette forums did a before and after dyno.
His bottom end was the same (+-5hp) and after 3500rpms his power gains were pretty nice
JMO though

our exhuast ports realy realy realy suck ***
I should have been more specific:

Personally, I don't think you need 1 3/4 headers over 1 5/8 headers unless you have had head work done. Just MHO.
Old Jan 30, 2003 | 10:13 AM
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Originally posted by SSTAT
I have heard good things about the Dynatech's so far as clearance and performace but nightmares about fit/install; of course you hear that about all headers when they first come out. Thats is what led me to the AS&M/RT setup. No ground clearance issues, lots of previous experience, coated inside and out, and GENERAL agreement that they simply put out the most HP of anything short of long tubes put me into these despite the price. Open them up right at the Y-pipe like I did (straight part of the cutout going out, ypart going to the rest of the system) and it sounds like a nascar stocker, simply the deepest, throatiest sound I have ever heard come out of a car. I have a pre install dyno, I get a post this spring.
Thats the second time I heard that, I dont know if i was blessed, but mine went in so freaking easy it was rediculious.

Much easier than some shorty headers i tried to install.
Slipped RIGHT in from the bottom
Old Jan 30, 2003 | 10:43 AM
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My BBK 1 5/8s yielded NO gains at the track. That was in better conditions w/ drag radials on so that there was no issue of consistency. I went 12.87 in 75 degree humid weather w/ the logs and 12.90 w/ the headers, y-pipe, cat-deleted and a retune. 1 5/8s are too small to offer a good transition at the head. Why buy 1 5/8s when 1 3/4s are much more expensive. As for those of you that think you don't need 1 3/4s w/out headwork. Explain internally stock cars picking up 15-20 rwhp w/ Hooker LTs.....yet even dyno shops will tell you that most 1 5/8s shorties barely outflow the stock logs until you get into the 350rwhp area. Then its only marginally better.
Bottom line, go w/ 1 5/8s and you'll regret it down the road. Get 1 3/4s and they'll suit you now, suit you later and won't cost you much more at all.
Old Jan 30, 2003 | 11:01 AM
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Originally posted by LT1Brutus
My BBK 1 5/8s yielded NO gains at the track. That was in better conditions w/ drag radials on so that there was no issue of consistency. I went 12.87 in 75 degree humid weather w/ the logs and 12.90 w/ the headers, y-pipe, cat-deleted and a retune. 1 5/8s are too small to offer a good transition at the head. Why buy 1 5/8s when 1 3/4s are much more expensive. As for those of you that think you don't need 1 3/4s w/out headwork. Explain internally stock cars picking up 15-20 rwhp w/ Hooker LTs.....yet even dyno shops will tell you that most 1 5/8s shorties barely outflow the stock logs until you get into the 350rwhp area. Then its only marginally better.
Bottom line, go w/ 1 5/8s and you'll regret it down the road. Get 1 3/4s and they'll suit you now, suit you later and won't cost you much more at all.
It all depends on what your hp goals are and what you want or need (like groung clearance). There are so many variables, it is impossible to say what header is "best". Best is what works for your setup. Bigger is not better if you can't/won't make use of it.
Old Jan 30, 2003 | 11:20 AM
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YOU CAN GET A SET OF MAC'S FROM ls1speed.com FOR 389.00 AND HAVE THEM JET COATED FOR $160.00 BUT THEY COME WITH A HIGH TEMP SILVER COATING ALREADY THAT WORKS GOOD AND SHOULD LAST A WHILE, BUT JET COATING IS BETTER IF YOU GOT THE $$$$$$.

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