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

Latest Edition to the car!

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Old Dec 28, 2012 | 10:53 PM
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From: LT1 land...the "409" of the 90s!
Default Latest Edition to the car!

Not much bur it finish's out the exhaust system. Class requires mufflers. What do you think?


Dynomax #289-24251
Race Bullet Muffler •In/Out: 3.5''
•Overall Length: 9''
•Shell Length: 5.80''
•Diameter: 4''
•409S Stainless Steel

X2!



They should make it a quiet little mouse
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Old Dec 28, 2012 | 11:05 PM
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From: LT1 land...the "409" of the 90s!
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BTW total exhaust cost from collectors to the rear axle True duels in Stainless steel 3 1/2 with mufflers was under $150
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Old Dec 28, 2012 | 11:13 PM
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a++ on following the rule book
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Old Dec 28, 2012 | 11:14 PM
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From: LT1 land...the "409" of the 90s!
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Originally Posted by pancho toco loco
a++ on following the rule book
I always play by the rules!











At least my interpretation of them
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Old Dec 29, 2012 | 12:05 AM
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lol that is not a muffler. I had those on my car and I swear it was just as loud as open headers.
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Old Dec 29, 2012 | 01:01 AM
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Originally Posted by TwoFast4Lv
BTW total exhaust cost from collectors to the rear axle True duels in Stainless steel 3 1/2 with mufflers was under $150
Mind posting or pming me specifics? My exhaust is fubar headers back.
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Old Dec 29, 2012 | 02:40 AM
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From: LT1 land...the "409" of the 90s!
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Mufflers 17.59 X2

A while back I found these on sale for $41.49

Magnaflow #642-15044
Stainless Steel Tail Pipe• 3.5 in. Single
• 90 deg. Side Exit
• Passenger Side


I got two of them! Way cheaper then Buy bends at $150 each!

BTW that is both sets and two 90s for good measure
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Old Dec 29, 2012 | 02:34 PM
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Any pics of it installed on the car, I'd like to see how you routed them, are they dumped at the axle or do they go over the axle and out the back?
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Old Dec 29, 2012 | 04:50 PM
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i run the same thing on my junk. they do make a difference vs open header.
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Old Dec 29, 2012 | 06:22 PM
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From: LT1 land...the "409" of the 90s!
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Originally Posted by 97Z28SS
Any pics of it installed on the car, I'd like to see how you routed them, are they dumped at the axle or do they go over the axle and out the back?
Not yet. I have been sick on and off and working really hard on new shop. Taking those pic's this morning was the most I have done on the car in two months or so
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Old Dec 29, 2012 | 07:46 PM
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nice! is there a reason you didn't go 4" ? with the power you are going to be making is why i was wondering?
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Old Dec 29, 2012 | 09:15 PM
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From: LT1 land...the "409" of the 90s!
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I was going to do 3 1/2 into a 5in but it VERY expensive LOL! The Collectors are 3 1/2 and when I found the deal on the 3 1/2 kits I figured I would try it. I plan on testing with and with out
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Old Dec 30, 2012 | 09:06 PM
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thats what i ran where the cat was with a turn down. LOUD !!
now I plan to run all the way back with 4inch with this turbo setup.

I put a bullet on my turbo dsm. and its just as bad on a 4banger. I need to find a sleeper muff. for the dsm now.
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Old Dec 30, 2012 | 10:18 PM
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From: windsor, ont. canada - Home of the fastest LT1 6spd.
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Originally Posted by TwoFast4Lv
I was going to do 3 1/2 into a 5in but it VERY expensive LOL! The Collectors are 3 1/2 and when I found the deal on the 3 1/2 kits I figured I would try it. I plan on testing with and with out
ahh ok, now ditch the 3.5" collectors and upgrade to a 4 " collector.

if you can get away with that on the street, god bless america! i have to run my SLP 2OTL on the street, even then it is loud!
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Old Dec 30, 2012 | 10:48 PM
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Originally Posted by robsquikz28
lol that is not a muffler. I had those on my car and I swear it was just as loud as open headers.
I have 12 inch 2.5 and they makes a HUGE difference on my car. Not quite by any means ,but still a noticeable difference. The first time I drove my car home it was just open header...I knocked a picture off the wall. Now, I just **** the neighborhood off when I come home.
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Old Dec 31, 2012 | 07:41 AM
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you will be supprised how much those little things cut it down.......i got two 3.5" borla xr1's and it cuts my sound in half and lost 0 ponies on the dyno
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Old Dec 31, 2012 | 10:08 AM
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I used to have the longer version of those on my car. and it cut the noise way down. I didn't like it and took them off and now i just run headers, x-pipe, then dumped. That was several years ago. Now that I'm a lil older and the car is little to loud for my taste.
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Old Dec 31, 2012 | 09:11 PM
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From: LT1 land...the "409" of the 90s!
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I have ran the 18 in 4in version for years. I know they make a huge difference
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Old Jan 1, 2013 | 08:32 AM
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Nice, I have 2 of these under my car. They're pretty loud but not as bad as open exhaust. They sound nothing like "Flowmasters"!
http://www.jegs.com/i/Flowmaster/389/15430S/10002/-1
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