C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

New Numbers

Thread Tools
 
Search this Thread
 
Old Dec 4, 2004 | 06:24 AM
  #1  
Geneus's Avatar
Geneus
Thread Starter
Le Mans Master
 
Joined: Dec 2003
Posts: 7,506
Likes: 0
From: Hillsborough NJ
Default New Numbers

Well,

I picked my car up yesterday after having the FAST 90mm intake and the Nick Williams 90mm TB installed. The final tune yielded 469.9rwhp and 420.4 rwtq (on the 4.10 gears). On one pull, the car made 472 rwhp but the torque went down while on another pull the car made 427 rwtq but the rwhp went down to 465. So, the final tune was a "compromise" in between. This is still a gain of nearly 20 rwhp and 10 rwtq from the stock intake and throttle body. The nice aspect is that the torque curve is fairly flat from 4500-6000 rpm.

I think I'm done for now. The only other thing I could do is have the heads milled more to raise the compression significantly. This would then lead to forging the bottom end and probably having to mix in race gas or some additives to bump the octane. But I'm not sure I'd want to go that route. More than likely, I'd just go "bigger" on the motor. Of course, that just means more "Benjamin$" for the tuner.

The car seems to drive very similar to before these mods, but we shall see how it behaves from a "very cold" start later this month or in January. That will be the true test.

Last edited by Geneus; Dec 4, 2004 at 06:29 AM.
Reply
Old Dec 4, 2004 | 07:18 AM
  #2  
Glennm27's Avatar
Glennm27
Race Director
Supporting Lifetime
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2002
Posts: 19,557
Likes: 1,470
From: I love you & miss you Linda
2017 C7 of the Year Finalist
St. Jude Contributor
Default

Sounds good. That's a decent improvement from just the intake and T/B.
Reply
Old Dec 4, 2004 | 09:15 AM
  #3  
Geneus's Avatar
Geneus
Thread Starter
Le Mans Master
 
Joined: Dec 2003
Posts: 7,506
Likes: 0
From: Hillsborough NJ
Default

Originally Posted by Glennm27
Sounds good. That's a decent improvement from just the intake and T/B.
Glenn,

Did you get those headers yet?
Reply
Old Dec 4, 2004 | 09:39 AM
  #4  
DsC5's Avatar
DsC5
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Sep 2001
Posts: 13,292
Likes: 0
From: Hockessin Delaware
Default

Originally Posted by Geneus
Glenn,

Did you get those headers yet?


Congrats on the great #s, Don.
Reply
Old Dec 4, 2004 | 09:59 AM
  #5  
Geneus's Avatar
Geneus
Thread Starter
Le Mans Master
 
Joined: Dec 2003
Posts: 7,506
Likes: 0
From: Hillsborough NJ
Default

Originally Posted by DsC5


Congrats on the great #s, Don.

I think you are next, at least that's what Chris says.
Reply
Old Dec 4, 2004 | 10:08 AM
  #6  
USA-VET's Avatar
USA-VET
Le Mans Master
 
Joined: Dec 2003
Posts: 8,119
Likes: 0
From: That dam place where it rains all the time
Default

nice #'s!


Reply
Old Dec 4, 2004 | 10:28 AM
  #7  
DsC5's Avatar
DsC5
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Sep 2001
Posts: 13,292
Likes: 0
From: Hockessin Delaware
Default

Originally Posted by Geneus
I think you are next, at least that's what Chris says.
Yeah, we've been talking about it, but I'm not sure I want to get into the slippery slope of having to get into the drivetrain next. It gets expensive and intensive, as I'm sure you know.
Reply
Old Dec 4, 2004 | 11:01 AM
  #8  
IFLUBYU's Avatar
IFLUBYU
Drifting
 
Joined: May 2003
Posts: 1,715
Likes: 1
From: cAshburn VA
Default

Good gain!

I'm figuring about $85/pony including tune, not too bad. Who did your tune?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

2027 Corvette vs The World: Every Model vs Closest Competitor

 Joe Kucinski
story-1

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-2

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-3

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
story-4

10 Things C8 Corvette Owners Hate (But Won't Tell You)

 Joe Kucinski
story-5

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

 Brett Foote
story-6

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

 Joe Kucinski
story-7

Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

 Michael S. Palmer
story-8

5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

 Joe Kucinski
story-9

7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette

 Pouria Savadkouei
Old Dec 4, 2004 | 11:22 AM
  #9  
Geneus's Avatar
Geneus
Thread Starter
Le Mans Master
 
Joined: Dec 2003
Posts: 7,506
Likes: 0
From: Hillsborough NJ
Default

Originally Posted by IFLUBYU
Good gain!

I'm figuring about $85/pony including tune, not too bad. Who did your tune?
ECS, of course.
Reply
Old Dec 4, 2004 | 01:45 PM
  #10  
FULTILT's Avatar
FULTILT
Instructor
 
Joined: Aug 2004
Posts: 199
Likes: 0
From: MI
Default

Nice numbers, could you feel a SOTP difference? Did torque drop off on the lower rpm's, this is always something i've wondered with the 90mm set-up. Have a good one and thanks again for the call, it opened my eyes to a few things.
Reply
Old Dec 4, 2004 | 02:11 PM
  #11  
Geneus's Avatar
Geneus
Thread Starter
Le Mans Master
 
Joined: Dec 2003
Posts: 7,506
Likes: 0
From: Hillsborough NJ
Default

Originally Posted by FULTILT
Nice numbers, could you feel a SOTP difference? Did torque drop off on the lower rpm's, this is always something i've wondered with the 90mm set-up. Have a good one and thanks again for the call, it opened my eyes to a few things.
As far as SOTP, I really won't know until I get my CCW drag package back on. Around the street, the F1's just are useless, as they were prior to this install. It does pull like a train.

The torque feels fine in the low RPM ranges. Most have suggested that this 90/90 combo works only for big blocks. I'd argue that with appropriate tuning, the 346 will respond as well.
Reply

Get notified of new replies

To New Numbers





All times are GMT -4. The time now is 12:01 PM.

story-0
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-1
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-2
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-3
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-4
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-5
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-6
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-7
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-8
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE
story-9
7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette

Slideshow: Check out these easy-to-install upgrades from Extreme Online Store that reshape the look and feel of the C6 Corvette.

By Pouria Savadkouei | 2026-03-23 17:00:27


VIEW MORE