Advantages to fast 90 w/ FI?
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From: Northwest side of Chicago
Advantages to fast 90 w/ FI? Im looking at changing to FI and wondering if there would be any advantage to keeping my fast 90/90. I could save some money and sell the fast and get a ls6 again. Or i could trade for a vic junior intake.
What do you guys think?
Alex
What do you guys think?
Alex
If you already have it and don't run more than 17psi, you'll be fine to just keep it.
If you want to make the extra money between it an a ls6, you won't lose any power by changing to a ls6.....plus it will take more than 17psi of boost.
If you want to make the extra money between it an a ls6, you won't lose any power by changing to a ls6.....plus it will take more than 17psi of boost.
I found here and there that folks said they had sealing issues with the FAST 90 multi-piece design. So when I changed my heads, I went from an LS6 intake to an LS2 intake with a NW 90mm TB. I also have a sheetmetal intake lying around, but I had this crazy idea I would go racing up at GLD once or twice a month.
Ryan family with 2 kids under the age of 2
Ryan family with 2 kids under the age of 2
Originally Posted by SPRAYED 01
I think i might just sell the fast and get the ls6. That way i could put the extra money into a decent fuel system.
Thanks
Thanks
That sounds like a plan...
Joined: Dec 2004
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From: Dallas (Richardson), TX, USA
So, the FAST 90 intake doesn't net you any power with FI? The 90mm TB, on the other hand, does?
(I'm not being sarcastic. I'm curious about this as well. My cousin has an LS2 and might want a FAST 90/90 for his setup.)
(I'm not being sarcastic. I'm curious about this as well. My cousin has an LS2 and might want a FAST 90/90 for his setup.)
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Originally Posted by Gauge
So, the FAST 90 intake doesn't net you any power with FI? The 90mm TB, on the other hand, does?
(I'm not being sarcastic. I'm curious about this as well. My cousin has an LS2 and might want a FAST 90/90 for his setup.)
(I'm not being sarcastic. I'm curious about this as well. My cousin has an LS2 and might want a FAST 90/90 for his setup.)
Neither will make a significant difference on a FI build.
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Well I didn't know the fast could only take 18 psi or whatever. After all the blow off things they sell are for like 30psi I think. I am sure have seen posts of guys running about 20psi on it no problems but I plan on likely much less boost anyway can't see needing much over 12 or 15 with my planned 408 or 427 and the twins.I like the fast is easy to do direct port as might run a small shot for fun and intimidation and it helps the turbos spool up instant,etc. I also liked the 90tb option. I guess if have any big problems down the road might go to something else. But if nothing else my fast and 90tb look really neat!
Originally Posted by pdanrichey
What about the LS1 intakes...would it be wise to make the switch to the better intake for the $$?
I have stage 2 ported 6.0L heads. Obviously, the LS6 will help on a forced induction car but by how much? Will the LS6 help me even more with the ported heads? i.e., if it makes an additional 20rwhp at 10lbs of boost on stock heads, will it make 30rwhp with ported heads? The air is being forced so it may or may not help. I figured it was only an extra $300 for the LS6 so it wasn't worth questioning. A $750 FAST IS worth questioning though
. 
Originally Posted by SStolen
PSJ. I thought you had to have LS2 heads to do an LS2 intake..???
Son of a bitch, I could of sworn I read somewhere that the LS2 intake would only work with LS2 heads. Thats why I thought the heads were different. That really pisses me off. So I could have bought an LS2 intake and 90mm TB over my LS6 and stock ported TB.
How much hp are people picking up all motor on a stock cube LSx with the LS2/90 set-up?
How much hp are people picking up all motor on a stock cube LSx with the LS2/90 set-up?
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Joined: Mar 2004
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From: BFE
Originally Posted by SStolen
Son of a bitch, I could of sworn I read somewhere that the LS2 intake would only work with LS2 heads. Thats why I thought the heads were different. That really pisses me off. So I could have bought an LS2 intake and 90mm TB over my LS6 and stock ported TB.
How much hp are people picking up all motor on a stock cube LSx with the LS2/90 set-up?
How much hp are people picking up all motor on a stock cube LSx with the LS2/90 set-up?
Originally Posted by Pro Stock John
Alex I'd get a LS2 intake, and keep your 90mm TB.
Keith
Screw the intake, I should just buy the cam instead... I can only see the better flowing intake help with "out of boost" power and maybe some gas mileage on the highway. At least when comparing $$ to power ratio.
$350 intake = 5 peak power and 12 under the curve (sort of)
$750 cam and goodies = 40 peak power and 45 under the curve.
$350 intake = 5 peak power and 12 under the curve (sort of)
$750 cam and goodies = 40 peak power and 45 under the curve.
