Ported throttle body, is it worth it?
Thread Starter
Le Mans Master
Joined: Mar 2006
Posts: 7,207
Likes: 311
From: Lino Lakes MN
Ported throttle body, is it worth it?
From everything I've read, the stock throttle body is good to about 500 hp. According to my tunner I'm at around 485 to 500 hp at the crank. I have yet to have the car dyno test to be sure. In your opinion what benefit would I see from buying or having my throttle body ported?
Current mods to my 2000 FRC w/ 3.42 gears from front to back are
Cam and springs spec'ed by Patrick G at 500hp goal
vararam intake
160 degree thermostat
226/230 Comp Cam .598/.609 113LSA +3 advance
LS2 243 stock heads
TEA .660 dual springs
7.35 chrome spring rockers
LS2 Timing Chain
LS6 Oil Pump
LS7 Lifters
LS2 Lifter buckets
LS6 Intake Manifold
30#Ford Racing Injectors - 36# GM Equivalant
1 3/4 LT Headers w/ flow through cats and x pipe
SLP power flo exhaust
Current mods to my 2000 FRC w/ 3.42 gears from front to back are
Cam and springs spec'ed by Patrick G at 500hp goal
vararam intake
160 degree thermostat
226/230 Comp Cam .598/.609 113LSA +3 advance
LS2 243 stock heads
TEA .660 dual springs
7.35 chrome spring rockers
LS2 Timing Chain
LS6 Oil Pump
LS7 Lifters
LS2 Lifter buckets
LS6 Intake Manifold
30#Ford Racing Injectors - 36# GM Equivalant
1 3/4 LT Headers w/ flow through cats and x pipe
SLP power flo exhaust
Last edited by yaknow; Jan 3, 2013 at 01:16 AM.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
When your at that HP/Tq level,,,, anything that you do will help. So,, YES.
In my honest opinion, you would SIGNIFICANTLY benifit from a ported FAST 90 and Ported LS2 TB. Then get a retune and see what you gain. I bet it will be 12-15 HP gain.
In my honest opinion, you would SIGNIFICANTLY benifit from a ported FAST 90 and Ported LS2 TB. Then get a retune and see what you gain. I bet it will be 12-15 HP gain.
Safety Car
Joined: Jan 2012
Posts: 3,956
Likes: 520
From: Da U.P.
According to this, the ported TB is worth I don't know because my POS computer won't show the page. I think it was around 10hp though, all up top only. According to this, the FAST 92 is good for 13whp on a stock LS6 but again, all up top. Neither seem to cost any power down low, but I think you're past the point of bang for the buck mods. That and the gains seen above should be more significant on your engine.
Thread Starter
Le Mans Master
Joined: Mar 2006
Posts: 7,207
Likes: 311
From: Lino Lakes MN
According to this, the ported TB is worth I don't know because my POS computer won't show the page. I think it was around 10hp though, all up top only. According to this, the FAST 92 is good for 13whp on a stock LS6 but again, all up top. Neither seem to cost any power down low, but I think you're past the point of bang for the buck mods. That and the gains seen above should be more significant on your engine.
Race Director
Joined: Apr 2007
Posts: 11,152
Likes: 890
From: South Western Ontario
FYI, there really is no such thing as X part being good for Y hp. It's possible the part can be successfully used to produce Y hp but that's not the same thing. Just because the part can be used in an engine producing Y hp doesn't mean that a better part couldn't be used to produce the same Y hp "easier".
In this case, the stock TB becomes more a restriction the more air you try to flow. The LS6 intake becomes more of a restriction the more air you try and flow too. I'd believe going bigger on both would show decent gains, especially at the top end. I'd think more like around 25-40hp could be possible with a FAST intake and bigger TB.
In this case, the stock TB becomes more a restriction the more air you try to flow. The LS6 intake becomes more of a restriction the more air you try and flow too. I'd believe going bigger on both would show decent gains, especially at the top end. I'd think more like around 25-40hp could be possible with a FAST intake and bigger TB.
Thread Starter
Le Mans Master
Joined: Mar 2006
Posts: 7,207
Likes: 311
From: Lino Lakes MN
FYI, there really is no such thing as X part being good for Y hp. It's possible the part can be successfully used to produce Y hp but that's not the same thing. Just because the part can be used in an engine producing Y hp doesn't mean that a better part couldn't be used to produce the same Y hp "easier".
In this case, the stock TB becomes more a restriction the more air you try to flow. The LS6 intake becomes more of a restriction the more air you try and flow too. I'd believe going bigger on both would show decent gains, especially at the top end. I'd think more like around 25-40hp could be possible with a FAST intake and bigger TB.
In this case, the stock TB becomes more a restriction the more air you try to flow. The LS6 intake becomes more of a restriction the more air you try and flow too. I'd believe going bigger on both would show decent gains, especially at the top end. I'd think more like around 25-40hp could be possible with a FAST intake and bigger TB.
Pro
Joined: Sep 2011
Posts: 531
Likes: 1
From: Tampa Fl
regardless of what you decide as your choice of TB, I would have the porting done. In my experience with ported LS TB's, you only gain throttle response. No noticeable increase in HP due to the fact that ported or not the diameter of the TB will be the same.
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Verdad Gallardo
AKA "The CLOWN"
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From: Chicago South Suburbs
Stop any mods and start saving for FI! You can find a used system for $3000-4000 and you can make 200hp more!
Team Owner
Joined: Sep 2003
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From: Raleigh / Rolesville NC
part of the continuing search process
Team Owner
Joined: Jan 2007
Posts: 29,063
Likes: 1,839
From: cookeville tennessee
But if you go the other way a few more hp here and a few there will someday add up to a bigger number.
Thread Starter
Le Mans Master
Joined: Mar 2006
Posts: 7,207
Likes: 311
From: Lino Lakes MN