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

Dyno numebrs from tonight

Thread Tools
 
Search this Thread
 
Old Oct 7, 2003 | 08:54 PM
  #1  
LD85's Avatar
LD85
Thread Starter
Race Director
25 Year Member
 
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Default Dyno numbers from tonight

Well, I decided to take the car down to Dyno it on a Dynojet, the tune is still not right but winter is coming. As soon as theForum home pages are squared away I will upload the Dyno graphs. Unless someone else wants to do it sooner.

My plan was to build a streetable "mild" 406 without the use of a solid roller cam and the Dyno proves the numbers to be respectable for a mild 406, I think. I believe that tuning will yield @ 20 or more HP but I will have to wait and see.

RJ and I will tune some more tomorrow and I may go out to Muncie Raceway Wedensday night for some 1/4 mile runs.

Run # 1 367.2 RWHP / 339.7 RWTQ
Run #2 361.5 RWHP / 345.4 RWTQ
Run #3 325.0 RWHP / 374.9 RWTQ

HP peaked at 5800
TQ peaked at 4500

The (AFR) air fuel ratios dropped on Run 1 & 2 to a low of 10 thruought the run.

On run #3 the AF stayed at 14.0 up to 15.5

All in all the numbers were lower than I expected but not bad coming form the factory 350 TPI, with 230 HP and 330TQ.

I will post the graphs when the web pages on the forum are accessible.




[Modified by ld85, 8:57 PM 10/7/2003]
Reply
Old Oct 7, 2003 | 09:09 PM
  #2  
BowTieBlood's Avatar
BowTieBlood
Melting Slicks
20 Year Member
 
Joined: Dec 2001
Posts: 2,049
Likes: 0
From: Texas
Default Re: Dyno numbers from tonight (ld85)

Nice results, I bet the tuning will help out a lot! :cheers:
Reply
Old Oct 8, 2003 | 02:22 AM
  #3  
Light84vette's Avatar
Light84vette
Melting Slicks
 
Joined: Sep 2002
Posts: 2,631
Likes: 0
From: Union City CA
Default Re: Dyno numbers from tonight (ld85)

Hey Id85,
I guess you finished a little earlier then me :thumbs: ANyway do you have any specs on your 406? Compression, heads, intake and exhaust would be some pretty good input so I can kinda guesstimate how much power mine would make. :yesnod: NIce Numbers, maybe you can add some Gas or a blower to it later on? :D
Reply
Old Oct 8, 2003 | 06:27 AM
  #4  
LD85's Avatar
LD85
Thread Starter
Race Director
25 Year Member
 
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Default Re: Dyno numbers from tonight (Light84vette)

Hey Id85,
I guess you finished a little earlier then me :thumbs: ANyway do you have any specs on your 406? Compression, heads, intake and exhaust would be some pretty good input so I can kinda guesstimate how much power mine would make. :yesnod: NIce Numbers, maybe you can add some Gas or a blower to it later on? :D
Well we are still tuning on this thing which has been really frustrating. I was a little dissapointed in the results to be

I think I may be making a head change tothe AFR-210's to try to pick up, from what I am told, another 25-50HP.

My motor combination is in my sig.

Reply
Old Oct 8, 2003 | 06:30 PM
  #5  
Light84vette's Avatar
Light84vette
Melting Slicks
 
Joined: Sep 2002
Posts: 2,631
Likes: 0
From: Union City CA
Default Re: Dyno numbers from tonight (ld85)

Damn, I have a power suckin Th400 and I think I have 180cc runners with only 8.5 to 1 compression. I plan on throwing a SC on it or maybe build a Twin Turbo or just one Turbo setup. Anyway have you driven it around yet? How is the throttle response? Does it loose traction easily? What kind of power was your car making before the 406? :confused:
Reply
Old Oct 8, 2003 | 06:34 PM
  #6  
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: Dyno numbers from tonight (ld85)

Get some tuning done and I bet the torque skyrockets.
Reply
Old Oct 8, 2003 | 07:28 PM
  #7  
dbwade36's Avatar
dbwade36
Drifting
10 Year Member
 
Joined: Aug 2002
Posts: 1,857
Likes: 0
From: Yakima WA
Default Re: Dyno numbers from tonight (ld85)

Where did you purchase your Walbro 340 pump? I am looking to change out my stock pump.
Reply

Get notified of new replies

To Dyno numebrs from tonight





All times are GMT -4. The time now is 03:29 AM.

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