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

Your muffler of choice to replace SLP muffler? (pics)

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Old 10-14-2011, 12:38 PM
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Default Your muffler of choice to replace SLP muffler? (pics)

The SLP 2 on the left muffler is beyond fixing as you can see from the pics. So I need one. Magnaflow was recommended by a few people but don't see any on their website that have a 3" inlet in the middle. I definetly would like to keep the twin pipes. How about Flowmaster, Dynomax, or Borla?

Old 10-14-2011, 01:15 PM
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if you have to have it exactly like that, then this hooker should work

http://www.summitracing.com/parts/HOK-21518HKR/

Otherwise I'd go with a 3" in/out borla down the center and have just one tail pipe and put the ebay corsa tips on it
Old 10-14-2011, 03:09 PM
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http://www.summitracing.com/parts/MPE-12588/
Old 10-14-2011, 03:22 PM
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I would say go with the Magnaflow #12588 listed by Birdie2000, or a Borla #40349, or possibly a Dynomax #17228, all are in stainless steel.
If you like the chambered muffler sound you can also go with a Flowmaster Super44 #8430452 in Stainless steel, or 9430452 in Black aluminized steel.

BTW, what's the length on your SLP muffler case?
The Magnaflow has the longest case length of all them listed(#12588 is 22").

Last edited by 99Bluz28; 10-14-2011 at 03:43 PM.
Old 10-14-2011, 03:42 PM
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Originally Posted by Birdie2000
This way one's too long.

Originally Posted by 99Bluz28
I would say go with the Magnaflow #12588 listed by Birdie2000, or a Borla #40349, or possibly a Dynomax #17228, all are in stainless steel.
If you like the chambered muffler sound you can also go with a Flowmaster Super44 #8430452 in Stainless steel, or 9430452 in Black aluminized steel.

BTW, what's the length on your SLP muffler case?
Dimensions were:
Length: 18"
Width: 9 1/2"
Thickness: 4"

Last edited by Rob94hawk; 10-14-2011 at 04:16 PM.
Old 10-14-2011, 03:49 PM
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Okay, the Dynomax #17228(about $110) has a 14" case length, an Hooker Aero Chamber #21518HKR (about $83) has a 14" case along with a Magnaflow #12198 (about $93).

BTW, the Hooker is aluminized steel, not S.S..

The two FM's listed are a little shorter but will work, they have 13" cases, there about $90 for the S.S. and $70 for A.S..

Last edited by 99Bluz28; 10-14-2011 at 04:03 PM.
Old 10-14-2011, 04:12 PM
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Oops, didn't catch that, although their standard F-body mufflers are 18" case length so you could probably fit a bigger muffler in there. No matter what you use, you might have to redo the tailpipes a little since the outlets on that SLP muffler look like they're spaced pretty close together compared to other mufflers.
Old 10-14-2011, 04:16 PM
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Put a 3 inch inlet Y at the end of the over the axle pipe with two-2 1/2 inch oulets and use two Powersticks inline with your two SLP 2OTL tail pipes. I bet that would sound good!
Old 10-14-2011, 04:16 PM
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My bad! Just re-measured and the case length is 18"!!
Old 10-14-2011, 04:26 PM
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WTF did you do to that muffler?
Old 10-14-2011, 04:29 PM
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Magnaflow #12288 (about $103).
Old 10-14-2011, 05:57 PM
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http://www.summitracing.com/parts/PYE-MVR86S/

Ive ran a Pypes racepro single in single out and liked it. It was raspy in the midrange rpms though, but sounded great at idle and WOT. The inside should be very similar to your SLP muffler.
Old 10-14-2011, 06:00 PM
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Originally Posted by FASTFATBOY
WTF did you do to that muffler?
Im with him ^^^^^^^^^^^
Old 10-14-2011, 06:01 PM
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Originally Posted by n2oblkz
Put a 3 inch inlet Y at the end of the over the axle pipe with two-2 1/2 inch oulets and use two Powersticks inline with your two SLP 2OTL tail pipes. I bet that would sound good!
^^^^ a TOTL GmmG
Old 10-14-2011, 06:02 PM
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My votes for hooker. But im hooked on the sound..They're on everything I own lol
Old 10-14-2011, 06:09 PM
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Originally Posted by pancho toco loco
^^^^ a TOTL GmmG
Yeah, I think that it would be a good sounding exhaust, about like the GMMG. It just seems that it may be difficult for the OP to find a muffler that will fit, especially with the spacing of the two outlets to get the 2OTL tailpipes to fit.
Old 10-14-2011, 08:41 PM
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Originally Posted by 99Bluz28
Magnaflow #12288 (about $103).
This might be it. Very similar to the design of the SLP. Straight pipes with glasspack surrounding it.

http://www.summitracing.com/parts/MPE-12288/
Old 10-15-2011, 08:33 PM
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Love my hooker...but get magnaflow so my car sounds different
Old 10-15-2011, 11:06 PM
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Originally Posted by pancho toco loco
^^^^ a TOTL GmmG
Man, I ******* agree. If I had a Camaro, I'd consider this!
Old 10-16-2011, 01:03 PM
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Originally Posted by pancho toco loco
^^^^ a TOTL GmmG
Don't know what this is guys. Fill me in plz.


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