C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Recipe for a 12 second L98

Thread Tools
 
Search this Thread
 
Old Sep 4, 2001 | 07:16 PM
  #61  
SloRvette's Avatar
SloRvette
Drifting
10 Year Member
20 Year Member
 
Joined: Aug 2001
Posts: 1,500
Likes: 0
From: Holliston MA
Cruise-In VII Veteran
Default Re: Recipe for a 12 second L98 (Beach Bum)

Sal,
My traps were in the 125-130 MPH range.

125-130 mph traps ?? What are we missing here... the 200 shot of NOS ?

Beach
Takes 600 + hp at the crank to run those traps. 220 CFM don't make that kind of power without some help.

2 weeks ago I bought a '90 Z-51 6 speed coupe. $7900. I've got a 383 sitting at a machine shop, Scat crank, Eagle rods, KB hyper pistons, AFR 190 heads, Superram, custom comp hyd. roller, as things go along I'll keep you updated. With the precats gutted - only change from stock - last weekend the car went 13.86 @ 100.78, 1.92 60ft Dunlop sp2000 tires, 104,000 miles. That's the baseline.
Reply
Old Sep 4, 2001 | 10:08 PM
  #62  
Fastguy's Avatar
Fastguy
Team Owner
25 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Nov 1999
Posts: 26,679
Likes: 17
From: This vette goes to 11 Milford MA
St. Jude Donor '03-'05
Default Re: Recipe for a 12 second L98 (SloRvette)

Sal,
My traps were in the 125-130 MPH range.

125-130 mph traps ?? What are we missing here... the 200 shot of NOS ?

Beach

Takes 600 + hp at the crank to run those traps. 220 CFM don't make that kind of power without some help.

2 weeks ago I bought a '90 Z-51 6 speed coupe. $7900. I've got a 383 sitting at a machine shop, Scat crank, Eagle rods, KB hyper pistons, AFR 190 heads, Superram, custom comp hyd. roller, as things go along I'll keep you updated. With the precats gutted - only change from stock - last weekend the car went 13.86 @ 100.78, 1.92 60ft Dunlop sp2000 tires, 104,000 miles. That's the baseline.
Hey, you didn't mention the gutted pre-cats when we raced. I am basically duplicating your motor with the exception of running an auto and using forged pistons. My 88 auto/2.59's ran 14.00@98 with no pre-cats, cut lidand "frisbee delete", so that's my baseline. A 12 sec daily driver that is reliable, affordable and FAST is attainable, as evidenced by L98 Terror's car.
Reply
Old Sep 4, 2001 | 10:28 PM
  #63  
miker61588's Avatar
miker61588
Pro
 
Joined: Dec 2000
Posts: 624
Likes: 0
From: Albany New York
Default Re: Recipe for a 12 second L98 (C4RAG)

lol c4 rag :D
Reply
Old Sep 4, 2001 | 11:32 PM
  #64  
CORKVETTE1's Avatar
CORKVETTE1
Melting Slicks
10 Year Member
 
Joined: Sep 2000
Posts: 3,099
Likes: 0
From: PITTSBURGH PA
Cruise-In IV Veteran
Cruise-In V Veteran
Default Re: Recipe for a 12 second L98 (miker61588)

QUOTE
I have a best time of 12.69, but the 60' times sucked....2.45 seconds. Those Goodyears just won't hook up. My traps were in the 125-130 MPH range.


CAN WE ALL SAY BS BS BS BS BS BS BS BS :bs :bs :bs :jester
Reply
Old Sep 5, 2001 | 01:59 PM
  #65  
CanoeU's Avatar
CanoeU
Instructor
10 Year Member
 
Joined: Apr 2001
Posts: 211
Likes: 0
Default Re: Recipe for a 12 second L98 (Sal Collaziano)

I found this very well documented web site with a 91 now
running low 12's.
http://www.baystatecorvetteclub.com/newpage11.htm
Reply
Old Sep 5, 2001 | 02:04 PM
  #66  
scorp508's Avatar
scorp508
Team Owner
Supporting Lifetime Gold
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Default Re: Recipe for a 12 second L98 (MattJungels)

I found this very well documented web site with a 91 now
running low 12's.
That is L98Terror's car named Valerie. What a mean foot ride it is! :jester I'm basically copying his setup, yet a slightly larger camshaft..... we'll see what happens once it's together. :crazy:

Reply
Old Sep 5, 2001 | 02:40 PM
  #67  
1991Z07's Avatar
1991Z07
Safety Car
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2000
Posts: 4,564
Likes: 110
From: Austin Texas
Default Re: Recipe for a 12 second L98 (CORKVETTE1)

Man.....you guys are a tough crowd!

OK...so I don't drag race like the rest of you do on a regular basis. :bb I'm an autocrosser, and am not embarrassed to admit it. Hell, my best R/T was a .669.....how in the world do you guys get that down to a .501? I worked on it all day long.

I've run this car down the 1/4 at 5 different events...I didn't remember EXACTLY what the MPH was, and didn't have my slips here at the office (they were in the car). I was pumped that I got a 3rd place in "A" bracket drags at NCCC convention in the fast guys bracket (less than 12.99 seconds).

My best time WAS a 12.69, and the MPH varied on all 12 runs from 109.9 mph to 115.7 mph. The timing slip is here at: http://www.corvetteforum.net/c4/joe90/1991Z07/ET.jpg

I'll see those 130 MPH traps with the 427 SB under way right now....we figure around 700-750 HP.

And I don't believe in using NOS...if I can't make it on the motor, what's the point.


[Modified by Joe90, 12:44 PM 9/5/2001]


[Modified by Joe90, 1:26 PM 9/5/2001]
Reply
Old Sep 5, 2001 | 03:23 PM
  #68  
CanoeU's Avatar
CanoeU
Instructor
10 Year Member
 
Joined: Apr 2001
Posts: 211
Likes: 0
Default Re: Recipe for a 12 second L98 (scorp508)

Scorp, Id be very interested in hearing how your build goes... especially how it all comes out. Keep us posted.

Matt
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-1

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-2

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-3

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-4

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-5

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-6

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-7

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-8

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-9

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
Old Sep 5, 2001 | 03:29 PM
  #69  
scorp508's Avatar
scorp508
Team Owner
Supporting Lifetime Gold
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Default Re: Recipe for a 12 second L98 (MattJungels)

Scorp, Id be very interested in hearing how your build goes...
As will I!!!! It's been an "ongoing" thing to which I haven't had time to do yet. :( I'll be sure to let everyone know....
Reply
Old Sep 5, 2001 | 04:17 PM
  #70  
Fastguy's Avatar
Fastguy
Team Owner
25 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Nov 1999
Posts: 26,679
Likes: 17
From: This vette goes to 11 Milford MA
St. Jude Donor '03-'05
Default Re: Recipe for a 12 second L98 (Joe90)

Man.....you guys are a tough crowd!


And I don't believe in using NOS...if I can't make it on the motor, what's the point.

The point? Umm............... to win?

"Hey what's that big bottle back there?"
"Uhhhhh, that's like, ummm, a fire extinguisher."
Reply
Old Sep 5, 2001 | 04:36 PM
  #71  
1991Z07's Avatar
1991Z07
Safety Car
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2000
Posts: 4,564
Likes: 110
From: Austin Texas
Default Re: Recipe for a 12 second L98 (Fastguy)

We can't use NOS in NCCC racing.

Of course, people do. They just know how to hide it well. They feel that winning IS everything. I don't believe in cheating to win...it is a hollow victory.

I guess I'm from the old school. NOS isn't there forever and when you run out you are back to a normal engine. I couldn't run NOS at the road race events, and it wouldn't work for anything besides drags since you need to be at WOT to activate the system. Make the power on the motor...whether it is naturally aspirated, blown or turbocharged and it is there anytime you want.

No filling the little blue bottle, no engine explosions...just horsepower when you want it.
Reply
Old Sep 5, 2001 | 06:06 PM
  #72  
Sal Collaziano's Avatar
Sal Collaziano
Thread Starter
Burning Brakes
20 Year Member
 
Joined: Feb 2001
Posts: 1,118
Likes: 0
From: West Palm Beach Florida
Default Re: Recipe for a 12 second L98

Hey! I liked that website about Val. Cool. But were the times on a stock 91 Vette really:

Starting point: 1991 Chevrolet Corvette est. ¼ mile time 14.7-14.9 sec

?? Heck. My Cadillac is about that fast. :p:
Reply
Old Sep 5, 2001 | 07:38 PM
  #73  
CanoeU's Avatar
CanoeU
Instructor
10 Year Member
 
Joined: Apr 2001
Posts: 211
Likes: 0
Default Re: Recipe for a 12 second L98 (Sal Collaziano)

estimated... i would think low 14's with the performance axle ratio, and it always varies depending on how tight(well maintained engine, etc) the car is.
Reply
Old Sep 5, 2001 | 08:07 PM
  #74  
your drinking buddy's Avatar
your drinking buddy
Race Director
 
Joined: Jul 2000
Posts: 15,921
Likes: 0
From: College of Charleston, SC
Cruise-In IV Veteran
Cruise-In V Veteran
Cruise-In VI Veteran
Default Re: Recipe for a 12 second L98 (MattJungels)

Will the LPE 74219 cam work with the stock computer on a 91?
Reply
Old Sep 9, 2001 | 01:31 AM
  #75  
Scorpvette's Avatar
Scorpvette
Intermediate
15 Year Member
 
Joined: Mar 1999
Posts: 30
Likes: 0
From: Chicago,Il,USA
Default Re: Recipe for a 12 second L98 (65Z01)

Say can I please get a copy of that recipe? I have an 85 that I am working with. Thank-you.
Reply




All times are GMT -4. The time now is 01:34 PM.

story-0
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-1
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-2
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-3
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-4
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-5
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-6
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-7
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-8
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-9
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE