Fast 90/90 too much?

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May 21, 2005 | 12:58 PM

dbhajek

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From: San Antonio Texas

Fast 90/90 too much?

Is a fast 90 with a 90 LS2 TB too much for a cam only Z06? Cam will be a Futral F13 230"/232" .595"/.585" 112LSA. Will I be hurting myself more then helping?

Thanks
Bud

May 21, 2005 | 01:38 PM

Bink

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St. Jude Donor '09

Quote:

Originally Posted by dbhajek

Is a fast 90 with a 90 LS2 TB too much for a cam only Z06? Cam will be a Futral F13 230"/232" .595"/.585" 112LSA. Will I be hurting myself more then helping?

Thanks
Bud

Fast 90 is a good idea - especially if you plan future mods. I have one with a Nick Williams 90 mm TB (239/251, 106). Good luck!

May 21, 2005 | 05:06 PM

robz

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Joined: Nov 2003

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From: NJ

Quote:

Originally Posted by dbhajek

Is a fast 90 with a 90 LS2 TB too much for a cam only Z06? Cam will be a Futral F13 230"/232" .595"/.585" 112LSA. Will I be hurting myself more then helping?

Thanks
Bud

I got about 9 rwhp with the combo on a cam only car. I would wait until you did the heads. There are some tuning issues and idle issues.

May 21, 2005 | 06:04 PM

SideStep

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Not to hi-jack this thread, but what tuning issues are there???

May 21, 2005 | 07:42 PM

Bink

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St. Jude Donor '09

Quote:

Originally Posted by SideStep

Not to hi-jack this thread, but what tuning issues are there???

adjustments to the Idle Airflow tables....very minor when tuned for the cam.

May 21, 2005 | 09:45 PM

Dixit

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Joined: May 2004

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From: Marietta GA

Quote:

Originally Posted by Bink

adjustments to the Idle Airflow tables....very minor when tuned for the cam.

Definetely minor, all you have to do is log the STIT and LTIT PIDs on the tuning software and use that to adjust the Base Idle Airflow table.

Dixit

May 21, 2005 | 10:35 PM

mdhmi

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From: Detroit

90 mm TB and intake is really not worth the money on a 346, IMHO.

Mark

May 21, 2005 | 11:19 PM

0Y2K1 SS 5.0 THIS

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Quote:

Originally Posted by dbhajek

Is a fast 90 with a 90 LS2 TB too much for a cam only Z06? Cam will be a Futral F13 230"/232" .595"/.585" 112LSA. Will I be hurting myself more then helping?

Thanks
Bud

on a 2001 FBody with a M6 and G5X4 cam...
Fast 90/90 443/400
LS6 and Shaner S2 425/380

dynos done within a week of one another and no other changes were made except tuning for each intake. The FAST actually made 31 rwhp more in the mid range RPMs from about 3500-5000

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May 22, 2005 | 09:27 AM

Dixit

Racer

Joined: May 2004

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From: Marietta GA

Quote:

Originally Posted by mdhmi

90 mm TB and intake is really not worth the money on a 346, IMHO.

Mark

You would think that as I think that as well, but Lou from LGmotorsports keeps shattering these records on stock 346cubes. He has even the LS2 engine with the GX4 cam and Fast 90 intake and LS2 TB and headers and was pushing out 460+ whp. He gained well over 60-70whp. I know the CAM helped the most, but he said the FAST also added an additional 20whp.

On the stock stock car, its not worth it, but on a car with a CAM and possible heads, you will definetely get a good kick in whp numbers.

Dixit

May 22, 2005 | 05:15 PM

#10

FULTILT

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From: MI

Quote:

Originally Posted by dbhajek

Is a fast 90 with a 90 LS2 TB too much for a cam only Z06? Cam will be a Futral F13 230"/232" .595"/.585" 112LSA. Will I be hurting myself more then helping?

Thanks
Bud

Usually most guys do heads before or at the same time as the 90/90, so it may be hard to find many with that set-up and stock heads. I am doing that same combo with AFR 205's, LG headers and 90/90, will let you know when it's up and running.(with a tune, of course)

May 22, 2005 | 05:21 PM

#11

Gray Ghost GS

"AlohaC5" Senior Member

Joined: Jun 2003

Posts: 3,562

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From: Madison, AL

FULTILT - I'm considering the FAST 90 Intake with Nick Williams 90 TB too. Please keep us posted on your results (before and after dyno) since I have a similar setup. Thanks!

May 22, 2005 | 05:50 PM

#12

Laguna Blu

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Joined: Jun 2004

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From: The Arid Sunny Desert

Quote:

Originally Posted by mdhmi

90 mm TB and intake is really not worth the money on a 346, IMHO.

Mark

Exactly what "The Vette Doctors" told me. Car ran better with LS6 manifold and stock TB.

May 22, 2005 | 06:10 PM

#13

blazeone

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Joined: Jan 2004

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From: Houston TX

Quote:

Originally Posted by Pewtavert

Exactly what "The Vette Doctors" told me. Car ran better with LS6 manifold and stock TB.

Mine did too.

May 22, 2005 | 06:36 PM

#14

gojo

Melting Slicks

Joined: Feb 2002

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From: Winston Salem NC

Quote:

Originally Posted by dbhajek

Is a fast 90 with a 90 LS2 TB too much for a cam only Z06? Cam will be a Futral F13 230"/232" .595"/.585" 112LSA. Will I be hurting myself more then helping?

Thanks
Bud

I gained 20hp with the Fast intake and NW TB on a 346ci. That was the only change.

Last edited by gojo; May 22, 2005 at 08:24 PM.

May 23, 2005 | 01:44 PM

#15

THRLSKR

Advanced

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I am running the FAST 90 NW TB on a cam only car (Stock 243 heads)...and it pulls like a freight train up top.

Good mod if you can tolerate some of the tuning issues (Any plenty of room to grown into).

Bill