C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

When does the throttle body become relevant???

Thread Tools
 
Search this Thread
 
Old Nov 24, 2014 | 12:12 AM
  #1  
SlowBusa08's Avatar
SlowBusa08
Thread Starter
Racer
 
Joined: Jun 2014
Posts: 493
Likes: 24
From: Peoria IL
Default When does the throttle body become relevant???

Like the title says, when does the stock ls7 throttle body become the choke point?

If a HCI LS7 car has all the standard bolt ons, when is it necessary to upgrade to a 102mm?

I'm debating between rolling with the factory TB, or upgrading to a NW102 while everything is getting tuned. I'm planning on running E85, if that matters.
Reply
Old Nov 24, 2014 | 12:48 AM
  #2  
TTZ06VETTE's Avatar
TTZ06VETTE
Drifting
15 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Jul 2006
Posts: 1,786
Likes: 93
From: Charlotte N.C.
Default

I'm running the stock TB with twin turbo 850RWHP and a sheet metal intake and it works fine. Can always have it ported and polished.
Reply
Old Nov 24, 2014 | 12:50 AM
  #3  
White_Lightning's Avatar
White_Lightning
Melting Slicks
20 Year Member
 
Joined: Oct 2000
Posts: 3,368
Likes: 30
From: dfw Texas
Default

1300 rwhp here... stock tb... i think it helps more on pd blowers that have to pull the air through the tb..
Reply
Old Nov 24, 2014 | 01:29 PM
  #4  
SlowBusa08's Avatar
SlowBusa08
Thread Starter
Racer
 
Joined: Jun 2014
Posts: 493
Likes: 24
From: Peoria IL
Default

Whitey, are you NA or forced? I know on a boosted vehicle the TB makes even less of a difference.

I'm really curious if where the data is that shows when the stocker becomes a choke point, or how much more could you gain with the aftermarket TB's everything else being equal. So same car, same dyno, tuned for stock throttle body, then swap the TB and adjust the tune, what kind of real world numbers would be seen.

Not really sure I'm asking this the right way...
Reply
Old Nov 24, 2014 | 01:42 PM
  #5  
timd38's Avatar
timd38
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
Default

I did Nick Williams only because I like the look. Not because I needed it......
Reply
Old Nov 24, 2014 | 09:24 PM
  #6  
SlowBusa08's Avatar
SlowBusa08
Thread Starter
Racer
 
Joined: Jun 2014
Posts: 493
Likes: 24
From: Peoria IL
Default

well I hate money just as much as the next guy, but I'm not sure even I could justify replacing it for the hell of it. I can live with the stockers appearance.
Reply
Old Nov 28, 2014 | 01:24 PM
  #7  
SlowBusa08's Avatar
SlowBusa08
Thread Starter
Racer
 
Joined: Jun 2014
Posts: 493
Likes: 24
From: Peoria IL
Default

Any other comments? I'm a little surprised there aren't more people weighing in on this.
Reply
Old Nov 28, 2014 | 08:37 PM
  #8  
cpweisbrod94's Avatar
cpweisbrod94
Advanced
 
Joined: May 2013
Posts: 81
Likes: 0
From: Atlanta Georgia
Default

I'm curious as to what the gains of a ported TB are over a aftermarket NW unit.
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 Dec 4, 2014 | 04:52 PM
  #9  
hrt vlv's Avatar
hrt vlv
Burning Brakes
Conversation Starter
All Eyes On Me
Liked
Loved
 
Joined: Sep 2014
Posts: 912
Likes: 52
From: Mech. pa
Default

Whoa all the guys have some awesome performance cars!They got to be scary fast.So my knowledge is small. On a car that is a daily driver can you go to big, maybe losing bottom end? drive ability? And if I did a t/b should I just get a upgraded intake? No headers at this point.
Reply
Old Dec 4, 2014 | 07:34 PM
  #10  
Dano523's Avatar
Dano523
Race Director
10 Year Member
Community Builder
Community Influencer
Top Answer: 1
 
Joined: Dec 2013
Posts: 12,502
Likes: 3,631
Default

Originally Posted by hrt vlv
Whoa all the guys have some awesome performance cars!They got to be scary fast.So my knowledge is small. On a car that is a daily driver can you go to big, maybe losing bottom end? drive ability? And if I did a t/b should I just get a upgraded intake? No headers at this point.
If you are stock, or close to it, the the TB is not your choke point, its the production flaws in the intake manifold, the rough channels in the cast heads, and the stock exhaust manifolds.


The stock manifold can be ported to clean up the production flows on the cheap,
regarding porting head, almost cheaper to just go with CNC heads,

And as for the The exhaust manifolds, LT headers with high flow cats solves that problem.
Reply

Get notified of new replies

To When does the throttle body become relevant???





All times are GMT -4. The time now is 07:32 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