Results with ETP heads.
Originally Posted by Slowhawk
Truthfully, with a 402ci with ET 240cc heads I would expect static compression around 12-1 with a Cam in the high 240's.Then a single plain intake would shine for 5500rpm and up.
you're close on all accounts.. compression is probably closer to 13 to 1 then 12 to 1 though. And with a converter that flashes to 6000, probably worth while to try the swap. At least removing the hood, do the swap, adjust the tune, and see where it's at.. before I go cutting the hood to make the elbow clear anyway.
Originally Posted by CollinsAutomotive
Mostly ETC cars so that rules that out.
If your losing power on all the cars that have the FAST setup something is really wrong 
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Originally Posted by Slowhawk
Then you better talk to your tuner If your losing power on all the cars that have the FAST setup something is really wrong
If your losing power on all the cars that have the FAST setup something is really wrong
Originally Posted by 5w20
this guy is just pulling yalls chain
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From: Plano, Tx.
This is the first I've heard of the fast 90 not making power, and I think other people's results have proven the fast 90 over and over again. I have to wonder what is going on at this one shop. 
I'll be running the fast 90 with my h/c setup, and I will test it against other intakes.
I'll be running the fast 90 with my h/c setup, and I will test it against other intakes.
Last edited by Cobraeater; Nov 15, 2006 at 02:05 AM.
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Originally Posted by CollinsAutomotive
I don't think the runners are that good. There are some shapping things in the FAST that make me go Hmmmm. I haven;t had time to really research the issue. When i get some down time i plan on trying to figure out the problem and if there is a solution.
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Originally Posted by vettenuts
Also, if a standing wave issue, I would think there would be an acoustic signature of some type associated with this.
Look at the comparison curves between the ls6 and the Fast. there is in fact a large dip in the power curve that looks like a standing wave action issue.
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Originally Posted by Cobraeater
Anyway, this is the first I've heard of the fast 90 not making power, and I think other people results have proven the fast 90 over and over again. I have to wonder what is going on at this one shop.
I'll be running the fast 90 with my h/c setup, and I will test it against other intakes.
I'll be running the fast 90 with my h/c setup, and I will test it against other intakes.
Last edited by Ragtop 99; Nov 14, 2006 at 09:58 AM. Reason: quoted a deleted post
Originally Posted by 02sierraz71_5.3
thats what Im starting to think, for someone to come forward and say a tried and true product doesnt work without multiple well documented data it just doesnt add up.
If you think you have wave interactions being influenced by valve events, this discussion is seriously flawed without knowing at least the general cam specs.
For it to be a harmonic problem, I would have thought that one real problem area would emerge, not a 3000 rpm range.
For it to be a harmonic problem, I would have thought that one real problem area would emerge, not a 3000 rpm range.
We just put down 460rwhp through and LS6 intake, MS3 (237/242 .603 .609 113LSA), PRC stage 2.5 5.3L heads (1199 assembled )
We are swapping the FAST 90/90 onto the car today, I will post up the GAINS and disprove this immediately.
We had a fast 90/90 pick up over 30 on a 98 H/C car last week coming from the LS1 manifold.
Thank You.
) We are swapping the FAST 90/90 onto the car today, I will post up the GAINS and disprove this immediately.
We had a fast 90/90 pick up over 30 on a 98 H/C car last week coming from the LS1 manifold.
Thank You.
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Originally Posted by Zach@Texas-Speed
We just put down 460rwhp through and LS6 intake, MS3 (237/242 .603 .609 113LSA), PRC stage 2.5 5.3L heads (1199 assembled )
We are swapping the FAST 90/90 onto the car today, I will post up the GAINS and disprove this immediately.
We had a fast 90/90 pick up over 30 on a 98 H/C car last week coming from the LS1 manifold.
Thank You.
) We are swapping the FAST 90/90 onto the car today, I will post up the GAINS and disprove this immediately.
We had a fast 90/90 pick up over 30 on a 98 H/C car last week coming from the LS1 manifold.
Thank You.
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From: BFE
Originally Posted by CollinsAutomotive
Ls1 intake would be a weak link. Don't forget to try a ls6 with a 70mm TB.
and Zach said they have a LS6 with those results.What do you do at CollinsAuto anyways????
From another thread you were on and this one I'm starting to suspect
Thanks for the entertainment value in this thread...I kinda enjoyed watching this Collins dude make an *** of himself. I think I'm gonna go ride my wave interactions all the way to Burger King, cuz I'm hungry.
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Originally Posted by PREDATOR-Z
Stock TBs are 75mm and Zach said they have a LS6 with those results.
What do you do at CollinsAuto anyways????
From another thread you were on and this one I'm starting to suspect
and Zach said they have a LS6 with those results.What do you do at CollinsAuto anyways????
From another thread you were on and this one I'm starting to suspect
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Originally Posted by MeentSS02
Thanks for the entertainment value in this thread...I kinda enjoyed watching this Collins dude make an *** of himself. I think I'm gonna go ride my wave interactions all the way to Burger King, cuz I'm hungry.
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Originally Posted by Zach@Texas-Speed
We just put down 460rwhp through and LS6 intake, MS3 (237/242 .603 .609 113LSA), PRC stage 2.5 5.3L heads (1199 assembled )
We are swapping the FAST 90/90 onto the car today, I will post up the GAINS and disprove this immediately.
We had a fast 90/90 pick up over 30 on a 98 H/C car last week coming from the LS1 manifold.
Thank You.
) We are swapping the FAST 90/90 onto the car today, I will post up the GAINS and disprove this immediately.
We had a fast 90/90 pick up over 30 on a 98 H/C car last week coming from the LS1 manifold.
Thank You.