Need help for my slow L98
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Joined: Jul 2002
Posts: 60
Likes: 0
From: Bellevue NE
Need help for my slow L98
I am stressed out, I need help! My Vette is fun to drive but I want some z-28 crushing power. I want to put 3.54 gears in it because It has 2.54 ratio right now.(the car is automatic)I would like to know if the 3.54 ratio can even be changed without having to replace the whole dana 36 rearend? Now for My engine, I want to put Scoggin Dickys Vortech heads and intake, Hot cam, 52mm throttle body, port the plenum, large tube runners, and headers. Do I need a chip to manage all this because of the speed density system? Will all this work and make a difference? My other option is different heads and the miniram II but that whole thing has me confused. Sorry I wrote a book! Please help!
[Modified by 91L98Vette, 11:00 PM 7/10/2002]
[Modified by 91L98Vette, 11:00 PM 7/10/2002]
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Speed density cars do not respond to modifications without tuning as well as a maf car. You can get 3.54 gears for your Dana 36, but do not go to the strip launching on slicks or it may go boom. :)
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Need help for my slow L98 (91L98Vette)
I wouldnt put 3.54 in a D36, switch to a Dana 44 if you want reliability. One run in DR's on a 36 and BOOM.
Your mods will require a custom chip.
Your mods will require a custom chip.
Safety Car
Joined: Sep 2001
Posts: 4,095
Likes: 1
From: modland CT
Re: Need help for my slow L98 (91L98Vette)
ide yank the engine & stroke it! check out http://www.allchevyengines.com all the mods you are talking about are gonna cost a couple of thousand & you are still gonna get smoked by most ls-1's! :yesnod: good luck! :cheers:
Le Mans Master
Joined: Dec 1999
Posts: 8,540
Likes: 1
From: And on the fifth day, subpoenas were served to Obama senior staff
Re: Need help for my slow L98 (91L98Vette)
Iron Vortec heads vs. your stock L98 aluminum D port heads? Don't know about that. Even the fast burns, don't know about that either. Cleaned up L98 head is fairly good stuff.
Also LT-4 hot cam with long tube runner intake, don't know about that either.
Think there are lots of guys here that can help with the pieces parts, but I would not build that combo personally. Then again, I'm not the one to ask.
I don't think you need 3.54's either. If you are staying with TPI, the early 3.xx ratios seem to be just as effective, from posts on this board.
Also LT-4 hot cam with long tube runner intake, don't know about that either.
Think there are lots of guys here that can help with the pieces parts, but I would not build that combo personally. Then again, I'm not the one to ask.
I don't think you need 3.54's either. If you are staying with TPI, the early 3.xx ratios seem to be just as effective, from posts on this board.
Safety Car
Joined: Sep 2001
Posts: 4,095
Likes: 1
From: modland CT
Re: Need help for my slow L98 (91L98Vette)
I see your vette has a carb and no computer, That is something I would love to do but wasn't it a bitch to chang over?
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