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

SLP vs AS&M need opinion

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Old 10-08-2003, 02:15 PM
  #16  
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Yea I really don't think I'd bother with upgrading those macs.

I'd leave the macs and put that money towards a good dyno tune.

But my SLPs seem to be doing well. I picked up 2mph in the 1/8 with only the headers.
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Old 10-08-2003, 02:47 PM
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i have slp shorty headers with a vortech 6 psi blower making 390 rwhp. no fitment problems and the jethot coating is still flawless after just over 15000 miles and 5 years.
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Old 10-08-2003, 03:52 PM
  #18  
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i got as&m for the quality not so much for the looks but they still look fine.the sound is baddass and the plug and wire routing blows,haha,nah the only wire i burnt that i know of(started another miss but dunno if its a wire)is #8 cuz my accel wire wasnt long enough and sat on the header.
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Old 10-08-2003, 05:15 PM
  #19  
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With good flowing heads on a N/A setup any 1 5/8's shorty header will be restrictive, the headers have to come off anyway for the new heads so I might as well put in some better flowing headers. Why risk that extra 5 to 10hp gain? I've also heard that MAC's are only good up to 350hp.

This leads me a to a different subject, MAC's for sale.
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Old 10-08-2003, 07:22 PM
  #20  
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Originally posted by NiteRider
I'm putting on ported heads this winter, there is no way i'm mating them up with MAC's. I'm hoping to put out somewhere near 390 - 400 rw so yes the MAC's woulden't cut it.
See my sig... That's full weight with A/C, and PS...Running through MACs, and a Flowmaster exhaust (with no cutout).
The suspension is completely stock (original), also.
You're cutting the MACs a little short.

Frank
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Old 10-08-2003, 08:04 PM
  #21  
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Originally posted by 12SCNDZ
See my sig... That's full weight with A/C, and PS...Running through MACs, and a Flowmaster exhaust (with no cutout).
The suspension is completely stock (original), also.
You're cutting the MACs a little short.

Frank
Nice numbers. I'm not cutting the mac's short but you have to admit even you would see some gains by to SLP's or AS&M's.
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Old 10-08-2003, 08:09 PM
  #22  
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well since they are both very comparable to each other, then why not get what have the best price available to you.

myself i have as&m and find it easier to change plugs on my friends car that has long tubes. not only that but easier access to the y-pipe and o2 and so on.
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Old 10-08-2003, 08:39 PM
  #23  
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If you're dead set on headers why not just go longtubes
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Old 10-08-2003, 08:50 PM
  #24  
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Originally posted by NiteRider
Nice numbers. I'm not cutting the mac's short but you have to admit even you would see some gains by to SLP's or AS&M's.
Actually, I've seen dyno tests where MACs made more HP than either of the other 2...Eventhough they're only 1 5/8".

Frank
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Old 10-08-2003, 08:53 PM
  #25  
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I agree, the only tests I've seen where one set of headers made more power then another was shortys vs longtubes, and only at like 500rwhp...but its your money
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Old 10-08-2003, 08:56 PM
  #26  
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Originally posted by FastZinTennessee
If you're dead set on headers why not just go longtubes
Can't afford FLP's and hookers + lowered car don't go well together.
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Old 10-08-2003, 09:01 PM
  #27  
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Eh...What the hell do I know? I went 12.82 with a completely stock motor and EXHAUST MANIFOLDS! ...LOL

Frank
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