Fast LSX 90mm composite intake worth it?
01-14-2006, 10:05 PM
#1
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Induction I am new to LS1tech. I have owned a 1999 T/A since 2001. I have done some simple mods such as changed out the air box, installed a throttle body spacer, bought a programer and installed a Corsa cat back exhaust. I'm thinking about changing out the intake. I have been looking at the Fast LSX 90mm composite intake. This intake is $375.00 more than the LS6 intake. is it that much better than the LS6 intake. Also should I add larger fuel rails and injectors? I'm also planning on installing a cam and having heads ported. Would appreciate some advice.
Last edited by tomz240; 01-15-2006 at 01:04 AM.
01-15-2006, 11:10 AM
#2
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Yes, it is worth it. But, only really worth it IMO when you've upgraded your cam.
Look at the cam guide sticky in the internals forum for plenty of info, along with the stickies in the externals forum.
Look at the cam guide sticky in the internals forum for plenty of info, along with the stickies in the externals forum.
01-15-2006, 11:50 AM
#5
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Stock rails are fine. Injectors, depends on year of your car. Best to consult with shop when purchasing the cam.
Long Tubes come before a cam. Ported Throttle Body and Underdrive Pulley are proven support mods.
The only cam out there that is designed specifically for stock manifolds is the Thunder Racing CheaTR cam, so that's you're cam option if you don't want LT's.
Long Tubes come before a cam. Ported Throttle Body and Underdrive Pulley are proven support mods.
The only cam out there that is designed specifically for stock manifolds is the Thunder Racing CheaTR cam, so that's you're cam option if you don't want LT's.
01-15-2006, 11:52 AM
#6
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Tue LS6 243 cnc ported castings are currently being sold for as cheap as $850 by Texas Speed, Patriot and Livernois.
TEA has a good 853/241 (LS1) head porting program if you wish to send in your own heads.
A plethora of 5.3L budget head options are out there.
Best would be to call a shop like Texas Speed and have them set up a package for your needs.
TEA has a good 853/241 (LS1) head porting program if you wish to send in your own heads.
A plethora of 5.3L budget head options are out there.
Best would be to call a shop like Texas Speed and have them set up a package for your needs.
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01-15-2006, 07:02 PM
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Originally Posted by tomz240
Any suggestions on long tube headers and underdrive pulleys? What is involved in getting your TB ported?
if you want to go the best i sugest kooks or QTP witch are both 800+ but well worth it
Or the cheaper hooker headers
or if moneys real tight pacesetters
01-15-2006, 08:25 PM
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I'm looking for what is best in the mid-range price. I'm not the best wrench turner either, but I'm planning on installing myself. So I also would like something that is not overly difficult to install. I tried to find some sites that carry Pacesetter headers but didn't have much luck. Can anyone recommend someone? By the way, I currently have a Corsa catback system on my ride.
01-15-2006, 10:30 PM
#12
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^ 3hp? 
Results from my old combo:
I wonder which 3 of those 55ponies belonged to the FAST 90. 
Results from my old combo:
A)390rwhp @ 6250/ 360rwtq @ 5000: cam only
B)425rwhp @ 6250/ 387rwtq @ 5000: Heads, same cam, same bolt-ons
C)480rwhp @ 6500/ 418rwtq @ 4750: Same heads, cam, new bolt-ons (470rwhp cutouts closed)
A) TSP231/237, Lid, Stock LS6 intake, Ported TB, UD pulley,SLP LT's, 3" Custom X-pipe Spec III, HD DS, 4.11 9" rear.
B) Same Cam, TEA Stage 1.5 5.3L heads, Same bolt-ons, same rear
C) Same Cam & Heads, 85mm Lid, 85mm MAF, FAST LSX(outof the box) 90/90, QTP HVMC LT's, QTP Dual Qtec ORY, SLP 2OTL catback, *Degreed the cam, same rear, *further tuning.
* 460rwhp/403rwtq before degree and further tuning
B)425rwhp @ 6250/ 387rwtq @ 5000: Heads, same cam, same bolt-ons
C)480rwhp @ 6500/ 418rwtq @ 4750: Same heads, cam, new bolt-ons (470rwhp cutouts closed)
A) TSP231/237, Lid, Stock LS6 intake, Ported TB, UD pulley,SLP LT's, 3" Custom X-pipe Spec III, HD DS, 4.11 9" rear.
B) Same Cam, TEA Stage 1.5 5.3L heads, Same bolt-ons, same rear
C) Same Cam & Heads, 85mm Lid, 85mm MAF, FAST LSX(outof the box) 90/90, QTP HVMC LT's, QTP Dual Qtec ORY, SLP 2OTL catback, *Degreed the cam, same rear, *further tuning.
* 460rwhp/403rwtq before degree and further tuning
01-15-2006, 10:49 PM
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Originally Posted by SouthFL.02.SS
^ 3hp?
I wonder which 3 of those 55ponies belonged to the FAST 90.
I wonder which 3 of those 55ponies belonged to the FAST 90.
And tuning makes ALL the difference in *any* aftermarket package. It is impossible to achieve any kind of decent results, especially with extensive mods, w/out quality tuning.
BTW, does the LS2 IM fit the LS1 heads? If so, go that route. LS6 stuff is already old news...
01-15-2006, 11:07 PM
#15
Originally Posted by SouthFL.02.SS
^ 3hp?
Results from my old combo:
I wonder which 3 of those 55ponies belonged to the FAST 90.
Results from my old combo:
I wonder which 3 of those 55ponies belonged to the FAST 90.
01-15-2006, 11:09 PM
#16
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90/90 is helping many cars hit and surpass 450rwhp on mildish head/cam setups, and on cam only setups.
It's a very important mod. A cam only setup will benefit from it.
Mod purchase priority/sequence is ultimately up to the owner. When to plop down $1300 for the 90/90 is up to you.
It's a very important mod. A cam only setup will benefit from it.
Mod purchase priority/sequence is ultimately up to the owner. When to plop down $1300 for the 90/90 is up to you.
01-15-2006, 11:14 PM
#18
Originally Posted by SouthFL.02.SS
90/90 is helping many cars hit and surpass 450rwhp on mildish head/cam setups, and on cam only setups.
It's a very important mod. A cam only setup will benefit from it.
Mod purchase priority/sequence is ultimately up to the owner. When to plop down $1300 for the 90/90 is up to you.
It's a very important mod. A cam only setup will benefit from it.
Mod purchase priority/sequence is ultimately up to the owner. When to plop down $1300 for the 90/90 is up to you.
01-15-2006, 11:16 PM
#19
!LS1 11 Second Club
Originally Posted by SouthFL.02.SS
Yes, it is worth it. But, only really worth it IMO when you've upgraded your cam.
Look at the cam guide sticky in the internals forum for plenty of info, along with the stickies in the externals forum.
Look at the cam guide sticky in the internals forum for plenty of info, along with the stickies in the externals forum.
My initial response.
01-15-2006, 11:17 PM
#20
Originally Posted by SouthFL.02.SS
And saying 3hp is like me pulling a number out of my ***.
