12 Second L98 Auto?
Thread Starter
Cruising
Joined: Aug 2002
Posts: 11
Likes: 0
From: Chicago NW Suburbs IL
12 Second L98 Auto?
I have a bone stock (almost) 89 Corvette automatic that I have been the proud owner of for 11 years. The only mods I have made are a K&N air filter, 24lb FMS Injectors and adjustable fuel pressure regualtor.
Question is, can I mod this car to make it 12.99 second capable without forced induction or stroking it? Will it be streetable after the mods? Does anyone have a recipe I can use?
After driving my brother-in-law's 13.0 second LT1 6 speed, I am hooked on "more power" :D
Thanks!
Question is, can I mod this car to make it 12.99 second capable without forced induction or stroking it? Will it be streetable after the mods? Does anyone have a recipe I can use?
After driving my brother-in-law's 13.0 second LT1 6 speed, I am hooked on "more power" :D
Thanks!
Elite Torch Red Member
Joined: Sep 1999
Posts: 57,805
Likes: 23
From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
Page Vic '89, he can tell you all about it.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: 12 Second L98 Auto? (Schwaggs)
You can build a 12sec L98 and retain the TPI input, though you may want to mod it a little.
You may want to upgrade your A4 with a 2,000rpm TC (stock is 1,500rpm) and a shift kit. This isn't the best for the strip but makes a very nice street/strip combo for street tires.
You've got mail with data on the mods needed to get you where you want to go and maybe a wee bit more.
You may want to upgrade your A4 with a 2,000rpm TC (stock is 1,500rpm) and a shift kit. This isn't the best for the strip but makes a very nice street/strip combo for street tires.
You've got mail with data on the mods needed to get you where you want to go and maybe a wee bit more.
Team Owner
Joined: Sep 2001
Posts: 62,180
Likes: 1,740
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: 12 Second L98 Auto? (Schwaggs)
Oh yes you can do it, there are several different approaches to it.
Modded TPI system that Vic89 has shown to work well.
Superram w/new cam, exhaust work, ported heads.
Miniram w/ new cam, exhaust and ported heads.
Modded TPI system that Vic89 has shown to work well.
Superram w/new cam, exhaust work, ported heads.
Miniram w/ new cam, exhaust and ported heads.
Le Mans Master
Joined: Jul 2001
Posts: 8,184
Likes: 3
From: Santa Maria, CA
Re: 12 Second L98 Auto? (Schwaggs)
The only mods I have made are a K&N air filter, 24lb FMS Injectors and adjustable fuel pressure regualtor.
After driving my brother-in-law's 13.0 second LT1 6 speed, I am hooked on "more power" :D
I have a bone stock (almost) 89 Corvette automatic that I have been the proud owner of for 11 years.
I have a bone stock (almost) 89 Corvette automatic that I have been the proud owner of for 11 years.
welcome aboard to the forum,
this is the right place to make your car faster!
nice to see another 89 owner :cheers:
Team Owner
Joined: Nov 1999
Posts: 26,679
Likes: 17
From: This vette goes to 11 Milford MA
St. Jude Donor '03-'05
Re: 12 Second L98 Auto? (Schwaggs)
My car has headers, duals, a 2600 stall, free mods and 3.07's. It runs low 13's with drag radials. Intake mods would put it in the 12's. Its not too hard to build a 12 sec L98 and still retain streetability.
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Instructor
Joined: Apr 2002
Posts: 243
Likes: 0
From: Hockessin DE
Re: 12 Second L98 Auto? (Schwaggs)
good to see another 89' owner on the board asking how he can make his car go faster! 12s should be no problem.. look at my simple mods and the times ive gotten with them. if i add a front ypipe, drag radials, and a siamesed base manifold and i should be seeing 12s easily. good luck
Safety Car
Joined: Jun 2000
Posts: 4,870
Likes: 25
From: Long Island, NY
Re: 12 Second L98 Auto? (tpivette89)
High 12's with bolt-on's is very possible. Take a look at my signature, the mods and ET's are right there.
Traction is the key to good ET's.
My car is still 100% streetable , just a little louder. :lol:
Vic
Traction is the key to good ET's.
My car is still 100% streetable , just a little louder. :lol:
Vic
Le Mans Master
Joined: Apr 2000
Posts: 6,341
Likes: 1
From: Shelton CT
Re: 12 Second L98 Auto? (Vic'89)
If I'd put Drags on my '85 I'm sure I'd hit high 12's. Only thing is I'm afraid to do so, as I might break my rear end.. :confused:
I have these mods :
Perf resource Chip
SS 2.5" Targa Mufflers
High-speed Catalytic Converter
March Power Amp Pulleys
SLP Siamesed Runners
Siamesed/ported Plenum
Ported lower intake manifold
Adj. Fuel Press Regulator
Modified MAF sensor
175F Thermostat
Modified SLP Ram-Air system
I have these mods :
Perf resource Chip
SS 2.5" Targa Mufflers
High-speed Catalytic Converter
March Power Amp Pulleys
SLP Siamesed Runners
Siamesed/ported Plenum
Ported lower intake manifold
Adj. Fuel Press Regulator
Modified MAF sensor
175F Thermostat
Modified SLP Ram-Air system
