Is it worth to upgrade from LS6 intake to a FAST Intake?
bob from brute speed built a nasty 402 ctsv with an f1 procharger. and if im not mistaken, the owner switched intakes from an ls6(it might have been an ls2, dont remember) and picked up around 40wheel/torque. i dont remember the exact numbers, but yeah. its def. possible to pick up more power. i will admit though, its hard to compare considering its a big blower, and a stoker motor.
The ls2 may be a terrible design, and I don't want to make this a ls2/ls6 manifold debate, but I think the ls2 can hold it's own. I think it's good competition against an ls6 when it's ported. 90mm tb vs. 78mm, can be ported etc. I've seen ls2 manifolds on motors that make 1000wheel.
I'm starting to get things ready to go FI this spring and I'm wondering if it's worth upgrading from Ported Stock TB/Stock LS6 intake to a: Fast 90/90, Fast 92/92 or a FAST 102/102 setup. I will be using ported 317 heads with my D1SC setup. Cost for upgrading ranges from $1000 to $1400. Will I notice any significant HP increase by stepping up to any of the FAST setups?
The FAST should of worked but it didn't, keep the LS6-looking at your sig-get a better cam suited for the blower.
Yep,mustang dyno through 9in ford and 4l60. And I figured I should be at 650hp too.the iat,s were getting up there and was pulling timing and through pretty crappy exhaust, but it,s about the same hp as when I was running 11psi. So I think a fmic would probably be my next project.
Yep,mustang dyno through 9in ford and 4l60. And I figured I should be at 650hp too.the iat,s were getting up there and was pulling timing and through pretty crappy exhaust, but it,s about the same hp as when I was running 11psi. So I think a fmic would probably be my next project.
i got my fmic on ebay, and it works great. and its only $255 shipped.
Keep ls6.
I've seen 680rw thru ls6.
I will be using a ls6 intake over my originally planned fast 90. I don't have to perform any prep work on a stock ls6 intake. Fast requires extra prep work for proper sealing under pressure
I've seen 680rw thru ls6.
I will be using a ls6 intake over my originally planned fast 90. I don't have to perform any prep work on a stock ls6 intake. Fast requires extra prep work for proper sealing under pressure
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Take a look at AFSTYK_____?'s post. he had one and it wasn't worth a ****. he went back to ls6 problem free. I have read into this plenty, and if your going to spend the money on the fast just to get the most you absolutely can out of the car, then why not just go ahead and have a custom sheet metal intake? I mean its and expensive intake to begin with unless you get it from classifieds on the low low. Have it painted and put the money into steak and shrimps.
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From: Norn Iron
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From: virginia
what size T/B YOU running on your LS6 INTAKE. I have a stock LS1 with a procharger. not looking to drag race. would like to put a ls6 intake & throttle body. makes 448 rwhp on 6lbs boost. maybe pick up a few more H/P.
I am curious as to how much I would pick up if I switched to a FAST 92/92 setup and got rid of my ls6 intake/ported tb setup. I remember a few years back when I had my N/A 408 I went from a ls1 intake/tb to a FAST 92/92 setup and picked up 51 RWHP. My current 408/F1-A setup has the ls6 intake setup and while I don't think I would see the same gains I do believe it would pick up some HP and lose a couple lbs of boost. Just can't convince myself the extra $1,000 is worth the HP when there are other cheaper ways to pick up HP in the FI world etc..
9 Second Club
Joined: Nov 2003
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Likes: 185
From: Norn Iron
I am curious as to how much I would pick up if I switched to a FAST 92/92 setup and got rid of my ls6 intake/ported tb setup. I remember a few years back when I had my N/A 408 I went from a ls1 intake/tb to a FAST 92/92 setup and picked up 51 RWHP. My current 408/F1-A setup has the ls6 intake setup and while I don't think I would see the same gains I do believe it would pick up some HP and lose a couple lbs of boost. Just can't convince myself the extra $1,000 is worth the HP when there are other cheaper ways to pick up HP in the FI world etc..
The LS has been around for many years now.....you'd think if those tests existed, FAST or people selling them would be shouting off the rooftops.
Nope...I dont hear anything.
not sure if it has been posted but here is my take on this...folks have been 8's on a ls6 folks have been 8's on a FAST. both are good intakes but both are harder to tune. look at most of the boosted motors that are or have been hurt....number 7 is almost aways the hurt one. this is because the intake design. If i were going to spend the money for an intake i would do a vic jr and an elbow with a ported stock tb. it makes things easier to tune as well as gives you more power up top....plus its the coolest looking intake every IMHO...thats not a custom 
not sure if it has been posted but here is my take on this...folks have been 8's on a ls6 folks have been 8's on a FAST. both are good intakes but both are harder to tune. look at most of the boosted motors that are or have been hurt....number 7 is almost aways the hurt one. this is because the intake design. If i were going to spend the money for an intake i would do a vic jr and an elbow with a ported stock tb. it makes things easier to tune as well as gives you more power up top....plus its the coolest looking intake every IMHO...thats not a custom