Ported throtle body??
Thread Starter
Pro
Joined: Jan 2008
Posts: 710
Likes: 2
From: St. Louis Mo
Ported throtle body??
OK, I am not a newbie to this, but I alway's thought this stuff was silly,,
A ported stock throttle body and a Ported stock intake,,, ,What is this really worth HP wise?? I would like to hear from people who have done this...
I have an 07 with headers and soon cam..
A ported stock throttle body and a Ported stock intake,,, ,What is this really worth HP wise?? I would like to hear from people who have done this...
I have an 07 with headers and soon cam..
Team Owner
Joined: Feb 2001
Posts: 27,252
Likes: 133
From: Short Hills, NJ
While I personally have not done both of those it is somewhat common knowledge that properly porting both the intake manifold and the throttle body can be worth anywhere from 8rwhp (at the minimum) to as much as 20rwhp+ depending on what other supporting mods/tuning that the car/motor already has.
Thread Starter
Pro
Joined: Jan 2008
Posts: 710
Likes: 2
From: St. Louis Mo
While I personally have not done both of those it is somewhat common knowledge that properly porting both the intake manifold and the throttle body can be worth anywhere from 8rwhp (at the minimum) to as much as 20rwhp+ depending on what other supporting mods/tuning that the car/motor already has.
THAT IS ALOT, I may have to look into this.
Team Owner
Joined: Feb 2001
Posts: 27,252
Likes: 133
From: Short Hills, NJ
20 is a little on the high side, one might only see that much in conjunction with a big cam or heads and cam set up...typically on an internally stock (bolt ons only) motor one might only see a total of 12-15rwhp from the ported intake/ported TB mod.
Racer
Joined: Jan 2008
Posts: 285
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From: Boca raton Florida
Yes it is definatly worth it but I would do headers/intake first.
Race Director
Joined: Oct 2004
Posts: 10,516
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From: Virginia Bch VA
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St. Jude Donor '06
While I personally have not done both of those it is somewhat common knowledge that properly porting both the intake manifold and the throttle body can be worth anywhere from 8rwhp (at the minimum) to as much as 20rwhp+ depending on what other supporting mods/tuning that the car/motor already has.
Guess 15 RHWP
Melting Slicks
Joined: Sep 2007
Posts: 2,597
Likes: 3
From: READING PA
St. Jude Donor '08-'09-'10
Porting Tb & Intakes
Jeremy formato does porting of tb's & INTAKES full time. He claims
conservatively that they pick up about 13 HP/TQ from the stock oem units and more with the fast. Incedentely he will be at keiths pitstop in Gettysburg, PA from 3-6-08 to 3-11-08 . He has the ported units and swaps them out and
you see the difference. He also dynos & tunes there also.
conservatively that they pick up about 13 HP/TQ from the stock oem units and more with the fast. Incedentely he will be at keiths pitstop in Gettysburg, PA from 3-6-08 to 3-11-08 . He has the ported units and swaps them out and
you see the difference. He also dynos & tunes there also.
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Burning Brakes
Joined: Jan 2005
Posts: 1,027
Likes: 2
From: Baltimore MD
St. Jude Donor '08
Jeremy formato does porting of tb's & INTAKES full time. He claims
conservatively that they pick up about 13 HP/TQ from the stock oem units and more with the fast. Incedentely he will be at keiths pitstop in Gettysburg, PA from 3-6-08 to 3-11-08 . He has the ported units and swaps them out and
you see the difference. He also dynos & tunes there also.
conservatively that they pick up about 13 HP/TQ from the stock oem units and more with the fast. Incedentely he will be at keiths pitstop in Gettysburg, PA from 3-6-08 to 3-11-08 . He has the ported units and swaps them out and
you see the difference. He also dynos & tunes there also.
Melting Slicks
Joined: Sep 2007
Posts: 2,597
Likes: 3
From: READING PA
St. Jude Donor '08-'09-'10
I was there for his last tuning session and went with the ported intake/tb setup. I was skeptical but there was absolutely a SOTP increase and an increase on how much tire smoke punching my MN6 in 2nd produced with no clutch. My only other mods were Magnaflow catback, 160 stat, and K&N air filter. I am putting down 367. We didn't have time to do a before pull on the dyno so I don't know what I picked up. I'll probably be there in March for a retune with headers.
400 RWHP/TQ. Last time I dynod 387 RWHP. The porting did make a sotp difference on mine last time.
Drifting
Joined: Sep 2005
Posts: 1,371
Likes: 2
From: Gilbert AZ
I am having vette air do my porting. Should have received my intake and TB today. So I'll let everyone know what the hp increase is. My engine is defintely starving for air, 580rwhp, so its the perfect canidate to see max gains on porting.
Race Director
Joined: Jan 2004
Posts: 18,725
Likes: 709
From: Bergen County, NJ
I hear the C6 TB is the same TB used in the Z06. If so, there is plenty of air coming thru, so why port it?
Safety Car
Joined: Nov 2007
Posts: 4,537
Likes: 1,403
From: Bethesda MD
This is from LS2Portworks:
January 12, 2008 - NEW L76 Dyno Results Posted!
After tons of great feedback, I finally got a dyno graph emailed back to me. +12 RWHP and +16.7 RWTQ gains with up to 20 RWTQ gains under the curve. This is the fix for your lazy L76/L92 combination!
Ported LS3 intakes should be available soon for core exchange. Mail-in LS3 Porting is available now! Gains for the LS3 are virtually identical to those gained on similarly built L76 combo's because the ports are the same!
After tons of great feedback, I finally got a dyno graph emailed back to me. +12 RWHP and +16.7 RWTQ gains with up to 20 RWTQ gains under the curve. This is the fix for your lazy L76/L92 combination!
Ported LS3 intakes should be available soon for core exchange. Mail-in LS3 Porting is available now! Gains for the LS3 are virtually identical to those gained on similarly built L76 combo's because the ports are the same!
Le Mans Master
Joined: Aug 2001
Posts: 8,145
Likes: 1
From: Bradenton FLORIDA
Drifting
Joined: Sep 2005
Posts: 1,371
Likes: 2
From: Gilbert AZ
580 is awesome!! A ported FAST90 is the ultimate for NA applications currently. I suspect you are choking at the TB & intake currently. Post the results so we can see. I expect some good gains. Then try our billet 90 & post the gain/loss/no difference. Would love to see the results from someone independent.
I was actually wondering about your TBs the other day.
Le Mans Master
Joined: Aug 2001
Posts: 8,145
Likes: 1
From: Bradenton FLORIDA
I was refering to our 90 vs a ported LS2 90....ours flows over 35 cfm more at WOT & shows as much as 14hp gain over one on big cube builds. Let me see if I can send a 95 to you for this & see.
Racer
Joined: Jan 2007
Posts: 410
Likes: 9
Is the intake manifold or throttle body for that matter an impedence to airflow or a resonance tuned device that is helping augment airflow that is being pulled into the engine to being sorta pushed+ pulled = rammed? I saw somewhere that airflow thru a stock LS3 intake = to 300cfm; Fast LSX = 300cfm; LS7 = 330cfm...if that were so you would think that there would be no advantage to have an intake manifold or throttle body flow greater than maximum lift head flow numbers. Porting seems to help with restrictive manifolds such as the LS1/2 but I remain a little skeptical it would help on the better designs on stock heads though numbers don't lie
Drifting
Joined: Sep 2005
Posts: 1,371
Likes: 2
From: Gilbert AZ
Is the intake manifold or throttle body for that matter an impedence to airflow or a resonance tuned device that is helping augment airflow that is being pulled into the engine to being sorta pushed+ pulled = rammed? I saw somewhere that airflow thru a stock LS3 intake = to 300cfm; Fast LSX = 300cfm; LS7 = 330cfm...if that were so you would think that there would be no advantage to have an intake manifold or throttle body flow greater than maximum lift head flow numbers. Porting seems to help with restrictive manifolds such as the LS1/2 but I remain a little skeptical it would help on the better designs on stock heads though numbers don't lie
Right now I have my LS7 intake being ported, do you think I would be better off with a ported FAST? Also I am serious about testing your TB and buying it if it makes hp gains. I'll pay for the dyno time and post before and after graphs. I will even do it with open headers as well to get a good comparision. I most likely will be going exhaustless either way.