Question About TB Porting
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 8,552
Likes: 936
From: Communist Colorado
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
What the tb did by itself, I have no idea, but the whole package does quite well.
Now if your going to do a pp tb, just buy a bigger tb. IIRC a 90mm wont fit on to a LS6 intake, unless you use a TPIS 90 tb AND their TPIS modified LS6 intake.
That is quite a combination,
Burning Brakes
Joined: Nov 2006
Posts: 989
Likes: 8
From: Chino Ca.
I agree that porting and polishing a TB may not net you any power gains and would not recommend it for someone that would be paying to have it done. For those that want to experiment and can DYI I do advise you try it, especially if you do your own tuning. To me it is just the clean up work you do on a head/cam/intake install. I have done this on four engine assemblies, including a supercharged 3800 with a North Star throttle body, that has run low 13's and now has almost 140k mile as a daily driver.
The off idle tip in can make a very streetable performer out of a nearly 600BHP LS3. Just my 2¢ worth!
Melting Slicks
Joined: Dec 2006
Posts: 2,186
Likes: 2
From: Woodinville WA
So the people saying they are not worth much are correct if referencing a stock car. But 5-7hp is fairly significant for such a simple and cheap mod, and a tuner such as lingenfelter will do it for less than $100. Pretty good value, when you consider a CAI might add 12-15hp and costs $250 or headers might add 20-25hp and cost $1500.
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
When I was originally researching getting a ported TB I asked Lingenfelter engineering what a ported TB would do. They told me on a stock car it is only worth 1-2hp. But on a car with mods, such as you have they see increases in the 5-7hp range.
So the people saying they are not worth much are correct if referencing a stock car. But 5-7hp is fairly significant for such a simple and cheap mod, and a tuner such as lingenfelter will do it for less than $100. Pretty good value, when you consider a CAI might add 12-15hp and costs $250 or headers might add 20-25hp and cost $1500.
So the people saying they are not worth much are correct if referencing a stock car. But 5-7hp is fairly significant for such a simple and cheap mod, and a tuner such as lingenfelter will do it for less than $100. Pretty good value, when you consider a CAI might add 12-15hp and costs $250 or headers might add 20-25hp and cost $1500.
Melting Slicks
Joined: Dec 2006
Posts: 2,186
Likes: 2
From: Woodinville WA
He should just spend the $100 and have Lingenfelter do it, that way he will know he's getting something of quality that's been thouroughly tested and works well.
