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

NOS Dyno Results

Thread Tools
 
Search this Thread
 
Old Jun 16, 2007 | 12:53 AM
  #1  
Outlander99's Avatar
Outlander99
Thread Starter
Intermediate
 
Joined: Jun 2007
Posts: 33
Likes: 0
From: Winnipeg Manitoba
Default NOS Dyno Results

Just ran my 1990 - L98 on a Mustang Dyno, Base line HP was 268.4hp with 319.3 torque, 100 Shot produced 341.6HP with 414.6 Torque and the 150 shot provided 361.6HP with 452.7 torque. Also had the oppertunity to meet Mike Wood of NX systems at the shop as he was getting some work done on the NX Mustang.. This man is very knowlegeable. He showed me the difference between a NOS system and and NX system.
Reply
Old Jun 16, 2007 | 02:15 AM
  #2  
cplonner's Avatar
cplonner
Burning Brakes
 
Joined: Apr 2005
Posts: 1,110
Likes: 0
From: JUPITER FLORIDA
Default

Besides the nitrous what do you have done to your car?
Reply
Old Jun 16, 2007 | 04:14 AM
  #3  
Outlander99's Avatar
Outlander99
Thread Starter
Intermediate
 
Joined: Jun 2007
Posts: 33
Likes: 0
From: Winnipeg Manitoba
Default

True Dual exhaust (no cat) and magna flow mufflers, no other mods yet.
Reply
Old Jun 16, 2007 | 10:05 AM
  #4  
mn_vette's Avatar
mn_vette
Melting Slicks
20 Year Member
Liked
 
Joined: Jan 2002
Posts: 3,293
Likes: 79
From: Jackson MI
Default

What were the a/f ratios on the runs? It sounds like something is a little off, perhaps jetting perhaps bottle pressure.
Reply
Old Jun 16, 2007 | 03:14 PM
  #5  
silver86's Avatar
silver86
Drifting
20 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Dec 2005
Posts: 1,309
Likes: 20
From: Woodstock Georgia
Default

Wow, you got 268whp from just exhaust mods on an L98?!
Reply
Old Jun 16, 2007 | 10:37 PM
  #6  
90Indy's Avatar
90Indy
Pro
10 Year Member
 
Joined: Jan 2004
Posts: 503
Likes: 0
From: Forney Texas
Default

Originally Posted by Outlander99
Just ran my 1990 - L98 on a Mustang Dyno, Base line HP was 268.4hp with 319.3 torque, 100 Shot produced 341.6HP with 414.6 Torque and the 150 shot provided 361.6HP with 452.7 torque. Also had the oppertunity to meet Mike Wood of NX systems at the shop as he was getting some work done on the NX Mustang.. This man is very knowlegeable. He showed me the difference between a NOS system and and NX system.
My hat is off to you for getting your baseline numbers so high with virtually no mods on an L98. I was not so lucky as I got 246hp/307tq out of my L98 with numerous mods. Granted I was running a mail order tune from PCMforless but you are doing well. Carry on.

90Indy
Reply
Old Jun 16, 2007 | 11:52 PM
  #7  
ubnpast's Avatar
ubnpast
Burning Brakes
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jan 2007
Posts: 1,117
Likes: 1
From: Central NJ
Default

nice numbers, did you pull any timing?
I saw some guy at the track with an l98, I believe he had a 150 shot, he was running 12.7's and I did find out that the track was fairly poor last friday.
Reply
Old Jun 17, 2007 | 01:15 AM
  #8  
Outlander99's Avatar
Outlander99
Thread Starter
Intermediate
 
Joined: Jun 2007
Posts: 33
Likes: 0
From: Winnipeg Manitoba
Default

My A/F was out, I was too rich. I will get the exact numbers on Monday. I was impressed with the baseline and the 100 shot but the 150 is less than expected. Left the timming as it was. No bottle heater and no pressure guage.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

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

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

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

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Jun 17, 2007 | 01:51 AM
  #9  
cplonner's Avatar
cplonner
Burning Brakes
 
Joined: Apr 2005
Posts: 1,110
Likes: 0
From: JUPITER FLORIDA
Default

Originally Posted by silver86
Wow, you got 268whp from just exhaust mods on an L98?!
Thats why I was asking, that is good power.
Reply
Old Jun 17, 2007 | 03:06 PM
  #10  
pushrod-v8's Avatar
pushrod-v8
Drifting
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2007
Posts: 1,291
Likes: 33
From: Chicago IL
Default

268 at the wheel with a exhaust system?

.....the car is not stock...especially on a mustang dyno, which typically give lower hp numbers. A stock '90 makes what....~240 flywheel hp? You are making more at the wheels than the engine was rated at the factory flywheel with just an exhuast?

If you have not owned the car your entire life, then somebody modified the motor.

Good numbers anyway!

Reply

Get notified of new replies

To NOS Dyno Results





All times are GMT -4. The time now is 01:07 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE