L98, LT1 exhaust layout differences
Thread Starter
Heel & Toe
Joined: Dec 2003
Posts: 20
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L98, LT1 exhaust layout differences
I want to put a B&B 3" exhaust system on my '88 L98. They only make 3" for 90-95 ZR-1 or 92-96 LT1 & LT4. I know I'll need to modify either one of these to fit. Which one has the closest layout to my '88? Thanks in adavnce.
[Modified by dstuhr, 7:19 PM 1/9/2004]
[Modified by dstuhr, 7:19 PM 1/9/2004]
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Re: L98, LT1 exhaust layout differences (dstuhr)
anything can be made to fit... the biggest question is emissions.
the ZR1 and LT1 are both true duals. they don't have ANY Y pipes.
Are you sure you need 3" pipes? I mean... thats a lot of pipe... 2.50~2.75 is more then enough for most mildly tuned street motors.
the ZR1 and LT1 are both true duals. they don't have ANY Y pipes.
Are you sure you need 3" pipes? I mean... thats a lot of pipe... 2.50~2.75 is more then enough for most mildly tuned street motors.
Team Owner
Joined: Sep 2003
Posts: 25,295
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From: I'm the walkin dude I can see all of the world...
St. Jude Donor '03
Re: L98, LT1 exhaust layout differences (bogus)
I would save the money and buy an L98 exhaust. The gains are really the same and I always get jealous when I see the price difference for the L98 exhaust stuff. Just my .02
:seeya
:seeya
Burning Brakes
Joined: Jan 2001
Posts: 1,169
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From: Manhattan
Re: L98, LT1 exhaust layout differences (dstuhr)
My guess would be the LT1 exhaust, but i'm not sure there is a difference.
I put the LT1 hangers on my car and had a local exhaust shop bend an exhaust. You'll need the 4 bolts that go to the bottom of the rear diff. The new bolts have studs on them to mount the middle brackets.
for the D44 they are GM part # 10098202
I only used the front and middle (diff carrier) mounts. The rear mounts (muffler) appeared to be the same for L98 and LT1
[Modified by Raistlin, 4:49 PM 1/9/2004]
I put the LT1 hangers on my car and had a local exhaust shop bend an exhaust. You'll need the 4 bolts that go to the bottom of the rear diff. The new bolts have studs on them to mount the middle brackets.
for the D44 they are GM part # 10098202
I only used the front and middle (diff carrier) mounts. The rear mounts (muffler) appeared to be the same for L98 and LT1
[Modified by Raistlin, 4:49 PM 1/9/2004]
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Re: L98, LT1 exhaust layout differences (Raistlin)
By the way the 96 LT4 also has a cross over just behind the resonator. Otherwise the LT1 systems are all the same with the exception of added O2 bungs behind the CATs in the 96 model year. 92 to 94 had one extra bung for a single post CAT sensor at the passenger side.
Thread Starter
Heel & Toe
Joined: Dec 2003
Posts: 20
Likes: 0
Re: L98, LT1 exhaust layout differences (dstuhr)
Thanks for the help! I know 3" is a bit big, but honestly you can't go too big :) Especially when the price is the same for the 2.5" and 3" kits. Anyone know of a place to get B&B cheaper than $1000?
