FAST intake manifold gains for C6 Corvettes
01-18-2007, 07:15 PM
#1
Former Vendor
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St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
FAST intake manifold gains for C6 Corvettes
Hi guys,
I know there has been a lot of talk about the FAST intake manifolds, and the gains if they are worth it or not. Many of you have seen these done before on a cam'd car or a cam and head car. To give you an idea of what this intake can do for you this is a comparison of two C6 Corvette's a 2006 and a 2007. Stock dyno's were within 5hp of each other (the '07 made 5 less) 357 vs 352 rwhp. Torque was within 5 as well.
Both cars have our LG Pro Long Tube headers, and LG tune. Run #9 is the 2006 car with just our headers and tune. Run number 19 is from the 2007 car with the same set of our LG Pro Long Tube headers, but features the addition of a FAST 90mm intake manifold. Take a look at the increase in torque, not just peak, but across the RPM range. Peak gains of 16rwhp and 21 ft-lbs. More gains can be found by porting the intake and throttle body as well.
We offer both porting services here as well.
Please feel free to call, email, or PM with any questions.
I know there has been a lot of talk about the FAST intake manifolds, and the gains if they are worth it or not. Many of you have seen these done before on a cam'd car or a cam and head car. To give you an idea of what this intake can do for you this is a comparison of two C6 Corvette's a 2006 and a 2007. Stock dyno's were within 5hp of each other (the '07 made 5 less) 357 vs 352 rwhp. Torque was within 5 as well.
Both cars have our LG Pro Long Tube headers, and LG tune. Run #9 is the 2006 car with just our headers and tune. Run number 19 is from the 2007 car with the same set of our LG Pro Long Tube headers, but features the addition of a FAST 90mm intake manifold. Take a look at the increase in torque, not just peak, but across the RPM range. Peak gains of 16rwhp and 21 ft-lbs. More gains can be found by porting the intake and throttle body as well.
We offer both porting services here as well.
Please feel free to call, email, or PM with any questions.
01-18-2007, 07:28 PM
#2
Instructor
Many thanks for the dyno comparison. This is exactly the hard data we have been looking for. I will soon be adding LG headers with some other mods to be determined and will be in touch.
jke
jke
01-19-2007, 01:40 AM
#7
Race Director
And it can do better than this with additional work. In fact, mine needed 5 hours of my time with a dremel. My car dynoed 355 stock and 360 with a mild tweak SAE on a Dynojet, so right there with LG's figures. After Kooks LT thru stock catbacks, Vortex, 1.85 roller rockers, ported TB, and ported FAST90, the car made 427 RWHP with a conservative tune. Sean actually got 2 HP more, but backed off for 91 octane. Similar cars done by OC Corvettes minus FAST and TB (Kooks, rockers, CAI, tune)were just shy of 400. So from where I sit, the ported FAST + Sean's work on the TB were worth 27 HP alone. Not saying you'll see this if those are the only 2 mods you do, but with this combo, that's what it was worth.
Sean spent 3 hours + on the TB. There was a ton of work there. It is really a rough piece in stock form.
Sean spent 3 hours + on the TB. There was a ton of work there. It is really a rough piece in stock form.
Last edited by TTRotary; 01-19-2007 at 01:45 AM.
01-19-2007, 06:50 AM
#8
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FAST intake in a supercharged application
My supercharger (A&A) goes in next week. Will the FAST have a bigger imapact in a supercharged application? Is it worth it to do when I am hopefully going to be near 575 - 580 range anyway.
01-20-2007, 12:41 PM
#14
For clarification, the 07 with the FAST was with or without porting in the above dyno?
Thanks for the hard evidence. Good to know. I would not have guessed a FAST would give 20 ft-lbs. HP increase, yes, but not nearly that much torque. Impressive.
01-22-2007, 12:31 PM
#16
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Anthony,
I heard your FAST install did not require modifications to the firewall, but to the FAST intake. Is that true? Are you shipping ported FAST or only installing them at your shop?
I heard your FAST install did not require modifications to the firewall, but to the FAST intake. Is that true? Are you shipping ported FAST or only installing them at your shop?
01-22-2007, 01:24 PM
#17
Le Mans Master
Question:
When people say they are "porting" their FAST manifold are they actually porting it or port matching it to the heads? Seems like the FAST would be pretty hard to make that much better.
When people say they are "porting" their FAST manifold are they actually porting it or port matching it to the heads? Seems like the FAST would be pretty hard to make that much better.
01-22-2007, 01:45 PM
#18
Race Director
I did not port match, nor did I "port" (enlarge) the runner. So no, I did not port the manifold in the normal sense.
What I did spend considerable effort on was cleaning up mismatched contours that would impede airflow or cause turbulence in the area where the three parts of the manifold mate up. This manifold needs a lot of work to clean it up. All of this becomes totally obvious once you remove the top piece.
As I indicated before, the place where it cleans up on the stocker or even a "ported" stocker is the plenum, which is baby-butt smooth with zero ridges and better transitions to the runners.
What I did spend considerable effort on was cleaning up mismatched contours that would impede airflow or cause turbulence in the area where the three parts of the manifold mate up. This manifold needs a lot of work to clean it up. All of this becomes totally obvious once you remove the top piece.
As I indicated before, the place where it cleans up on the stocker or even a "ported" stocker is the plenum, which is baby-butt smooth with zero ridges and better transitions to the runners.
01-22-2007, 01:52 PM
#19
Le Mans Master
01-22-2007, 01:53 PM
#20
Le Mans Master
I did not port match, nor did I "port" (enlarge) the runner. So no, I did not port the manifold in the normal sense.
What I did spend considerable effort on was cleaning up mismatched contours that would impede airflow or cause turbulence in the area where the three parts of the manifold mate up. This manifold needs a lot of work to clean it up. All of this becomes totally obvious once you remove the top piece.
As I indicated before, the place where it cleans up on the stocker or even a "ported" stocker is the plenum, which is baby-butt smooth with zero ridges and better transitions to the runners.
What I did spend considerable effort on was cleaning up mismatched contours that would impede airflow or cause turbulence in the area where the three parts of the manifold mate up. This manifold needs a lot of work to clean it up. All of this becomes totally obvious once you remove the top piece.
As I indicated before, the place where it cleans up on the stocker or even a "ported" stocker is the plenum, which is baby-butt smooth with zero ridges and better transitions to the runners.
