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MAC mids OR Pacesetters?

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Old Apr 18, 2006 | 08:37 AM
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Default MAC mids OR Pacesetters?

I want to make my own true dual setup....but which header should I go with? I can get a good deal on the Mac's and a friend of mine told me that he dyno'ed an increase of 15hp from them.

What do you guys think? I want the most HP increase. Thanks
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Old Apr 18, 2006 | 08:38 AM
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definately go pacesetters!!
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Old Apr 18, 2006 | 08:47 AM
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if you want the most gains get long tubes, from what i'm told you should either leave the stock manifolds on or go long tubes(unless you have clearence/bottoming out issues).
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Old Apr 18, 2006 | 08:52 AM
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I love my new pacesetters! ive had a set on 2 of my previous fbodys and a set of hookers on my built ws6 and i cant tell a difference!
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Old Apr 18, 2006 | 08:57 AM
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Contrary to what everyone says, MACS make great power and are great if you want the absolute best power while having good ground clearance.

If ground clearance is not an issure than get longtubes, the pacesetter long tubes have good clearance anyway, mine never hit anything.
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Old Apr 18, 2006 | 09:01 AM
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I've had both macs and pacesetters, and pacesetter wins hands down. Ground clearance is not an issue w/pacesetters, they sound tons better than the macs, and I can feel a seat-of-the-pants increase on my well calibrated butt dyno.
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Old Apr 18, 2006 | 09:10 AM
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Originally Posted by jmm98LS1
I've had both macs and pacesetters, and pacesetter wins hands down. Ground clearance is not an issue w/pacesetters, they sound tons better than the macs, and I can feel a seat-of-the-pants increase on my well calibrated butt dyno.
Agreed. They make more power and dont have issues with clearance.

But sometimes MACS are made out to sound like they make no power, when I have seen setups where they are on par with longtubes based on dyno readings. I guess it depends on entire exhaust setup.
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Old Apr 18, 2006 | 09:32 AM
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Check this out.
https://ls1tech.com/forums/generation-iii-external-engine/487801-stainless-xs-supercomp-headers.html

A lot of people are watching this thread to see how these headers go on... AWESOME price for stainless.
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Old Apr 18, 2006 | 11:05 AM
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Pacesetters, best way to go, mac mids are worth 5 hp at best over the stock set up.
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Old Apr 18, 2006 | 11:20 AM
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Originally Posted by daryl2cb@yahoo.com
Pacesetters, best way to go, mac mids are worth 5 hp at best over the stock set up.
I would like to know why you think they would only be worth 5 hp.

My Macs helped me knock a half second off my 1/4 mile time and put down 321 rwhp. If the long tubes aren't that much more than the Macs I would say go with the longtubes, they will give you slightly more power. Those ebay headers look like a real nice deal.
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Old Apr 18, 2006 | 11:23 AM
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Macs have proven to perform well and will give you WAY more than 5 rwhp. In fact their peak power isn't too far off from a longtube. You are better off with a longtube if you have the chance though. You'll make a few extra peak rwhp, and definately gain more under 4500 rpm. You shouldn't lose any more clearance with any of the good longtubes vs. Mac mid-lengths.
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Old Apr 18, 2006 | 11:26 AM
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I went with macs cuz theyre easier to install. They drop in from the top.

If youre gonna run true duals pacesetter would be better. Tsp makes a true dual kit that works with the pacesetters. No brainer
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Old Apr 18, 2006 | 11:54 AM
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Originally Posted by dug
I went with macs cuz theyre easier to install. They drop in from the top.

If youre gonna run true duals pacesetter would be better. Tsp makes a true dual kit that works with the pacesetters. No brainer
People that have had both will usually say that the pacesetters are easier to install than the Macs. The pacesetters slip right in. Don't let an easys install sway you towards the Macs.
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Old Apr 18, 2006 | 11:56 AM
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Originally Posted by daryl2cb@yahoo.com
Pacesetters, best way to go, mac mids are worth 5 hp at best over the stock set up.
Please stop spreading misinformation - maybe you should read the exhaust FAQ at the top of this forum :

Dyno - Macs vs. Longtubes :



Rob (Bad30th)
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Old Apr 18, 2006 | 12:07 PM
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Originally Posted by Bad30th
Please stop spreading misinformation - maybe you should read the exhaust FAQ at the top of this forum :

Dyno - Macs vs. Longtubes :



Rob (Bad30th)
Like I said earlier, slight difference in power between the two. If you are lowered 2 " I would go with the MACS and not have to worry at all about hitting.
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Old Apr 18, 2006 | 12:57 PM
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Originally Posted by Redneck Z
People that have had both will usually say that the pacesetters are easier to install than the Macs. The pacesetters slip right in. Don't let an easys install sway you towards the Macs.
Longtubes dont drop in from the top, they go in from the bottom. You have to raise the car 3 feet off the ground to get them in from the bottom. I wasnt comfortable with that and decided to go with the macs.
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Old Apr 18, 2006 | 01:22 PM
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Originally Posted by dug
Longtubes dont drop in from the top, they go in from the bottom. You have to raise the car 3 feet off the ground to get them in from the bottom. I wasnt comfortable with that and decided to go with the macs.
The pacesetters slip in as easy as shorties from the bottom. I've done pacesetters and hookers from the bottom, and they slipped in easier than my JBA shortes did from the top. The car was about 14 inches from the floor, on jackstands on the lowest setting. What weren't you comfortable with? Did you do the y-pipe from the top also lol? You have to raise the car up no matter what, so I don't see what the big deal is with putting LT's in from the bottom.
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Old Apr 18, 2006 | 01:34 PM
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Originally Posted by Redneck Z
The pacesetters slip in as easy as shorties from the bottom. I've done pacesetters and hookers from the bottom, and they slipped in easier than my JBA shortes did from the top. The car was about 14 inches from the floor, on jackstands on the lowest setting. What weren't you comfortable with? Did you do the y-pipe from the top also lol? You have to raise the car up no matter what, so I don't see what the big deal is with putting LT's in from the bottom.
My driver pacesetter did not slip right in. That damn casting on the block was in the way. I came up with a good way to get it in though without cutting the casting.
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Old Apr 18, 2006 | 01:39 PM
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Its not that big of deal, Im just paranoid. I was in the middle of a cam swap and someone local was selling nib macs so I bought them. Pacesetters werent proven at the time.
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