LS1 manifold to Fast 90/90
09-03-2006, 11:55 AM
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LS1 manifold to Fast 90/90 Ok I have heard the HP gains from LS1 to LS6 manifold, but what about LS1 to Fast 90/90? Also would it help with gas mileage? I had an 1/8 of a tank and after revving it for my carclub and taking someone on a SHORT ride my check gauges came on really quick! I have the car tuned for better gas mileage at cruising speeds too 
09-03-2006, 07:56 PM
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yeah the more you mod it, the crappier the gas mileage. I have seen 10-15 rwhp gains from the 90/90. Just remember, all cars are different.....while your friend may pick up 25, you might only see 15.......LS1's are wierd man.
09-03-2006, 08:08 PM
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most cars with stock cubes don't get that big of a gain from an ls6 intake to a fast 90. i have seen people post only a few hp gains switching them over. i don't think it is worth the money unless you have bigger cubes.
09-03-2006, 08:15 PM
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^that is true too, seen it pick up A LOT on a 408ci. But, if your the type of person that wants to stay stock cubes and squeeze out all the power possible and have the $$ to spend, then go for it.
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09-03-2006, 09:11 PM
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Originally Posted by cws T/A
with you having a cam and a ls1 intake not ls6 you would benefit from it greatly have it velocity ported for more of a gain . gas mileage whats that 
09-03-2006, 09:18 PM
#9
With that cam and stock heads that intake won't be able to be utilized nearly at all to its full potential and porting it would just cost extra money that won't be worth it. I've got a 408 with a 244/248 cam and ported heads flowing 320 on the intake side and I still have a LS6 intake and ported tb and made 475/450 on a mustang dyno. My application would get a good bang for the buck from the FAST upgrade and porting, probably 30 hp easy. An LS6 flows plenty and will prob net you 10-15. That's about $40/hp right there. Get a FAST combo (along with porting for another $300 we'll say) that will net you 20-25. That's about $75/hp. If you have a lot of money and it's burning a hole in your pocket, go for it. If you're looking for mods that are the best bang for the buck then go with the LS6.
09-04-2006, 12:29 AM
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Originally Posted by silverdub6
LS1 INTAKE to FAST 90....
i didn't clarify it very good but i was meaning go with an ls6 intake instead of a fast 90. it would be half the price.
09-04-2006, 07:56 AM
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Originally Posted by orangeapeel
Not completely true. A turbo setup is more economical. 
yeah but when you get a turbo, do you tend to stay out of the gas?? No, you tend to use that bastard more often.
09-04-2006, 11:09 AM
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Originally Posted by ArcticZ28
With that cam and stock heads that intake won't be able to be utilized nearly at all to its full potential and porting it would just cost extra money that won't be worth it. I've got a 408 with a 244/248 cam and ported heads flowing 320 on the intake side and I still have a LS6 intake and ported tb and made 475/450 on a mustang dyno. My application would get a good bang for the buck from the FAST upgrade and porting, probably 30 hp easy. An LS6 flows plenty and will prob net you 10-15. That's about $40/hp right there. Get a FAST combo (along with porting for another $300 we'll say) that will net you 20-25. That's about $75/hp. If you have a lot of money and it's burning a hole in your pocket, go for it. If you're looking for mods that are the best bang for the buck then go with the LS6.
09-04-2006, 01:48 PM
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Originally Posted by michaelsvt03
most cars with stock cubes don't get that big of a gain from an ls6 intake to a fast 90. i have seen people post only a few hp gains switching them over. i don't think it is worth the money unless you have bigger cubes.
09-04-2006, 08:35 PM
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Originally Posted by Moonder
I agree with you, i know some one mad almost +900rwhp witht LS6 intake and stock ported tb on 408ci, F1-R, 150 shot
