Proof for doubters of the benefits of a ported TB.
Thread Starter
Teching In
Joined: Oct 2003
Posts: 49
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From: Wichita, Kansas
Proof for doubters of the benefits of a ported TB. Hopefully this won't get sent to the sponsor feedback or dyno forums. Lately there's been a lot of talk about the benefits of ported throttle bodies but very littl "real" proof of gains, so I think this would be the place to post for the most people to benefit.
Some people claim the car is more responsive.....honestly I couldn't tell, but my butt-o-meter is hard to impress.
I finally got my car to the dyno this weekend. The first run was with my stock TB & engine coolant @ approx 180*.
Second run was with a ported Bo White TB in place, but I was already warmed up and couldn't get the temp below 200* (it mostly fluxed between 204-201*).
Non Ported: 315 hp & 333 lbtq
Ported : 321 hp & 335 lbtq
The numbers above are gains at peak. Not much of a difference between the two until 3,900 rpm's when the ported one starts to take a 2 hp & tq lead. The torque pretty much fluxes between 2-6 lbs the entire time up to 6,000rpm's. Similar story with the hp, pretty much the same until 3,900 when it gains 2 and increases a little at a time until 5,000rpm's where has (and keeps) an advantage of 6hp up to 6,000rpm's.
I'm sure my numbers would have been closer (if not more) to Bo's gain of 8hp, if my engine temps would have been 20* cooler. I guess I shouldn't have procrastinated on installing my thermostat huh?
Considering how much time you spend at the track over 5,000 rpm's, $65 for a gain of 6hp (at least) is a hell of a good deal.
Some people claim the car is more responsive.....honestly I couldn't tell, but my butt-o-meter is hard to impress.
I finally got my car to the dyno this weekend. The first run was with my stock TB & engine coolant @ approx 180*.
Second run was with a ported Bo White TB in place, but I was already warmed up and couldn't get the temp below 200* (it mostly fluxed between 204-201*).
Non Ported: 315 hp & 333 lbtq
Ported : 321 hp & 335 lbtq
The numbers above are gains at peak. Not much of a difference between the two until 3,900 rpm's when the ported one starts to take a 2 hp & tq lead. The torque pretty much fluxes between 2-6 lbs the entire time up to 6,000rpm's. Similar story with the hp, pretty much the same until 3,900 when it gains 2 and increases a little at a time until 5,000rpm's where has (and keeps) an advantage of 6hp up to 6,000rpm's.
I'm sure my numbers would have been closer (if not more) to Bo's gain of 8hp, if my engine temps would have been 20* cooler. I guess I shouldn't have procrastinated on installing my thermostat huh?
Considering how much time you spend at the track over 5,000 rpm's, $65 for a gain of 6hp (at least) is a hell of a good deal.
Last edited by Ron78Z&01SS; Mar 28, 2005 at 11:09 AM.
Glad ya got it on the dyno and got 10 bucks per HP. I do not know where you can buy HP for that much so I think its pretty good. All of the testing I have done or seen done was very controlled and as accurate as possible like the temp and such. Hopefully jrp will get his stuff runnin right and get the testing he his going to do as well. Thanx again 
Originally Posted by Cammin BeaSSt
Good to see some back to back dyno pulls. Ported TBs definately benefit most if not all LS1 combinations out there.
Good work Bo!!
Good work Bo!!
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Originally Posted by BLCKBRD
when you port your TB, is it just a bolt-in mod or do you need a tune after?
its pretty much just a bolt in mod..... your PCM can handle the small amount of change it really has to...
but $65???
dam.... I can do it myself at home for about $12...and about 6 total hours worth of work...take it off the night before...lay in the epoxy...and the copper pipe...
let it dry...go to grinding with the dremel..... clean it up with a little denatured alchohol..... slap it back on the car and drive off
No programming is required as said before. Most people do not have the equipment or the knowledge to do porting at thier disposal so that is why I am busy doin TBs every week
Hey Bo, can you ask Scott if a car that has already been tuned needs another tune after installing your TB?
I'm still gonna get mine done with you, but it'll be a 'lil while now, I'm having to get my hail damage fixed.
I probably can't get up with you about it for another few weeks.
I'm still gonna get mine done with you, but it'll be a 'lil while now, I'm having to get my hail damage fixed.
I probably can't get up with you about it for another few weeks. 
Originally Posted by Bo White
Glad ya got it on the dyno and got 10 bucks per HP. I do not know where you can buy HP for that much so I think its pretty good. All of the testing I have done or seen done was very controlled and as accurate as possible like the temp and such. Hopefully jrp will get his stuff runnin right and get the testing he his going to do as well. Thanx again
Originally Posted by Bo White
No programming is required as said before. Most people do not have the equipment or the knowledge to do porting at thier disposal so that is why I am busy doin TBs every week
good point....
guess I'm lucky to have the tools and the knowhow
good to see that somebody is able to make a buck off of it...
I have seen your work...and it definately looks GOOD
dude and seriouisly who the hell is goingn to spend 6 hours of there time..portiing when they can jus pay 65 and be done with iit
Originally Posted by soundengineer
good point....
guess I'm lucky to have the tools and the knowhow
good to see that somebody is able to make a buck off of it...
I have seen your work...and it definately looks GOOD
guess I'm lucky to have the tools and the knowhow
good to see that somebody is able to make a buck off of it...
I have seen your work...and it definately looks GOOD
Originally Posted by Bo White
Thanx, Im not makin a killin off of it thats for sure lol.
I want to get one soon. Do you have a way of getting cores for those of us with DD cars?
