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Old 11-20-2012, 01:37 PM   #1
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Question Fast Intake for the SLO 6.0

Well, what do you all think about me going to a Fast Intake

With the following, I made 375 rwhp and 384 rwft-lb tq.

Comp Cam 265 in. 271 ex.// .522 in. 529 ex. //114 LSA
K&N Intake
Kooks Headers Signature Series Long Tubes with cats
Magnaflow Competition Series Cat-back

Changed out the Cam and made

435 rwhp and 411 rwft-lb tq.

What will a Fast 102 Intake add to my car? Power wise? Is the Fast Intake worth the money for my low powered GTO?
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Old 11-20-2012, 01:57 PM   #2
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A FAST is not a bad next mod at this point since the stock intake is so poor. You might try and find a used FAST 90/92 and have it ported if it is not already. Then use the money you save toward heads, or upgrading the 243s that you have.
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Old 11-20-2012, 02:36 PM   #3
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Originally Posted by Wang...View Post
Sometimes, there isn't anything more to say or left to add, but "tits".

Q: Raced mah car to da beach wit no oil ?
A: "Tits"

Q: Packed my M6 trans with lard an' now it shifts like ca-rap 'n smells like fries ? "
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Q: Bought 197k mile GTO and rear end makes teh noise ?
A: "Tits"


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Old 11-20-2012, 03:44 PM   #4
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That dyno was VERY friendly,,,,,,,,,,,,,,,,,,,,,like has been said already a good used 90/92 will probably gain you at least 40rwhp if you use the same dyno,,,,,,,,,,,,,Realistically a FAST should get you another 15rwhp.
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Old 11-21-2012, 03:34 AM   #5
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Ls3 heads and intake.
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Old 11-21-2012, 03:54 AM   #6
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Old 11-21-2012, 05:35 AM   #7
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Porting your LS2 stock intake would net 10+ rwhp and ~15 rwtq

The FAST would net you +20rw and maybe more.
One costs <$200
One costs >$900
decisions decisions
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Old 11-21-2012, 07:04 AM   #8
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Do the fast, eventually have your heads ported.

l92's should give you 85% of the power for probably 60% of the cost too, but I doubt your cam was designed with them in mind.

I also agree on that was probably a generous dyno.
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Old 11-21-2012, 09:26 AM   #9
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Quote:
Originally Posted by Black Night...View Post
Comp Cam 265 in. 271 ex.// .522 in. 529 ex. //114 LSA

Seems like this cam would work fine with a Ls3 head swap, a little exhaust bias.

I think some of these huge "Ls3" split cams are blown out of proportion. From what I've seen, although the port cc is largely in favor of the intake, most flow sheets on Ls3 heads show similar flow to cathedral percentages with exhaust being close to 70% of intake, which is on par with most heads for the Ls engines.
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Old 11-21-2012, 10:18 AM   #10
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I'm having a hard time understanding the first post. Sounded like he went from that cam to some other custom cam. original numbers did seem very low for a cammed ls2 though.
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Old 11-21-2012, 10:25 AM   #11
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Quote:
Originally Posted by Shift_GRIND...View Post
I'm having a hard time understanding the first post. Sounded like he went from that cam to some other custom cam. original numbers did seem very low for a cammed ls2 though.

Yeah, I think you're right. He never gave out the secret custom cam specs from PB&J.
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Old 11-21-2012, 10:52 AM   #12
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Yeah, I think you're right. He never gave out the secret custom cam specs from PB&J.

Correct, I was asked not to list that information.
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Old 11-21-2012, 11:06 AM   #13
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Quote:
Originally Posted by 87LC2...View Post
Seems like this cam would work fine with a Ls3 head swap, a little exhaust bias.

I think some of these huge "Ls3" split cams are blown out of proportion. From what I've seen, although the port cc is largely in favor of the intake, most flow sheets on Ls3 heads show similar flow to cathedral percentages with exhaust being close to 70% of intake, which is on par with most heads for the Ls engines.

blasphemy.

You mean to tell me that a 12-14 degree split on for that setup is blown out of proportion!?!?
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Old 11-21-2012, 11:15 AM   #14
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Well, the Fast 102 is on the way. I will have the car retuned on the same dyno, same person. Therefore, we will see what kind of results the car makes.

You know what shocks me is that Ive heard so much difference in what people think the Fast 102 will make as far as hp. I hear anything from 10hp to 30hp. Im hoping to pick up 15 hp, some power I can feel.

Therefore, taking bets on what the car will make (no money). Post what you think it will make as far as horsepower and torque.
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Old 11-21-2012, 11:17 AM   #15
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Peanut Butta Jelly Time! Peanut Butta Jelly Time!

Sorry I couldn't help it lol

First decide what ports you're going with down the road (square vs cathedral) then pick the set up to go with. If going cathedral, a FAST is a must. For square ports, just get the stocker ported, LS3 heads are good to go as cast.
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Old 11-21-2012, 11:19 AM   #16
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Quote:
Originally Posted by Black Night...View Post
Well, the Fast 102 is on the way. I will have the car retuned on the same dyno, same person. Therefore, we will see what kind of results the car makes.

You know what shocks me is that Ive heard so much difference in what people think the Fast 102 will make as far as hp. I hear anything from 10hp to 30hp. Im hoping to pick up 15 hp, some power I can feel.

Therefore, taking bets on what the car will make (no money). Post what you think it will make as far as horsepower and torque.

I'll play,

450/425 after the Fast.
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Old 11-21-2012, 11:49 AM   #17
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Originally Posted by Shift_GRIND...View Post
Do the fast, eventually have your heads ported.

l92's should give you 85% of the power for probably 60% of the cost too, but I doubt your cam was designed with them in mind.

I also agree on that was probably a generous dyno.

I can tell you that the lift was not designed with with the L92's in mind.

Also, there are people in STL that will argue PBJ dyno is low and is fully loaded. Nevertheless, the car is running against some real competition and hanging well. A bolt-on 2004 Corbra is no slouch which my GTO ran great against. Most bolt-on Cobras can make 460+ hp.
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Old 11-21-2012, 11:54 AM   #18
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Originally Posted by 6point0 goat...View Post
I'll play,

450/425 after the Fast.

I hope your right, I would jump for joy for a 15 hp increase.
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Old 11-21-2012, 01:33 PM   #19
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Quote:
Originally Posted by Black Night...View Post
I hope your right, I would jump for joy for a 15 hp increase.

That would be my guess. As far as "other" fast cars around you, it would be interesting to see what kind of time slips they have in hand as there are a ton of Cobra's running around the Savannah area that have gotten their feelings hurt pretty bad by some local bolt on GTO's despite we all know that our cars are "heavy pigs".

Dyno numbers are just that, numbers. Roll races are one thing, 1320 time slips are quite another, and in my opinion the buck stops with the time slip.
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Old 11-21-2012, 01:43 PM   #20
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I picked up my used FAST 102 for $500. I switched from a ported LS2 intake. I SEEM to have more under the curve power. I doubt a bolt-on car can really see gains, but it is a mod I would do again, for the price I paid. Plus I do plan heads/cam, so might as well get it out of the way.
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Old 11-21-2012, 02:03 PM   #21
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Quote:
Originally Posted by Brians Goat...View Post
That would be my guess. As far as "other" fast cars around you, it would be interesting to see what kind of time slips they have in hand as there are a ton of Cobra's running around the Savannah area that have gotten their feelings hurt pretty bad by some local bolt on GTO's despite we all know that our cars are "heavy pigs".

Dyno numbers are just that, numbers. Roll races are one thing, 1320 time slips are quite another, and in my opinion the buck stops with the time slip.

A time slip does not tell all the story. What if dude can't drive great or have good tires?

That doesn't mean that his car is not more powerful, just that he make his car look like a dog at the track.
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Old 11-21-2012, 10:18 PM   #22
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I would absolutely buy a 102. But first ditch the K&N for the Vararam. That will net you a good chunk right there.
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Old 11-22-2012, 07:14 AM   #23
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I would absolutely buy a 102. But first ditch the K&N for the Vararam. That will net you a good chunk right there.

I will be looking into an Intake next year.
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Old 11-22-2012, 03:29 PM   #24
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Quote:
Originally Posted by Brians Goat...View Post
That would be my guess. As far as "other" fast cars around you, it would be interesting to see what kind of time slips they have in hand as there are a ton of Cobra's running around the Savannah area that have gotten their feelings hurt pretty bad by some local bolt on GTO's despite we all know that our cars are "heavy pigs".

Dyno numbers are just that, numbers. Roll races are one thing, 1320 time slips are quite another, and in my opinion the buck stops with the time slip.

Roll races are probably the best indication of a increase of power if racing the same person. 1/4 mile times are all over the board. DA changes alone can account for close to half a second, elevation, 60' times, weather.... Dyno numbers are probably a better tool then comparing one persons time to anothers across the country.
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Old 11-22-2012, 05:29 PM   #25
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I would definitely go for a Fast 102. I did my heads/cam and thought I could get away with my Formato Ported Ls2 intake but it turned out that it was too restrictive. I will be doing a fast 102/DuSpeed next month
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Old 11-29-2012, 06:20 PM   #26
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Well, the results is in folks!

Same dyno, same tuner. Added Fast 102 (only).

From 435 rwhp to 411 rwtq to...

450 rwhp and 420 rwtq

6point0 goat, was pretty dead on with his guess.




New Dyno by acts187kjv, on Flickr
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Old 11-29-2012, 06:29 PM   #27
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Solid gains man!
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Old 11-29-2012, 06:48 PM   #28
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Originally Posted by 6point0 goat...View Post
Solid gains man!

Well, I was hoping for atleast 15 hp, therefore I'm happy. Also, most of the gain is up top.
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