Is Fast Lsx 90 Worth It?
Thread Starter
Instructor
Joined: Dec 2002
Posts: 183
Likes: 0
From: Shelby Twp MI
Is Fast Lsx 90 Worth It?
I have a 383 stroker and am currently changing my head/cam combo. I'm going with ET Performance 5.3 heads and an Ed Curtis cam to match the flow rate of the heads. My question is; Is the FAST LSX 90 intake with the Nick Williams Throttle Body worth the money for what you gain in return or should I stay with the stock LS6 intake and TB? Any info is appreciated!
Thanks,
KJ
Thanks,
KJ
Lepus-temperamentalus
Joined: Apr 2004
Posts: 5,827
Likes: 5
From: Roswell Ga
It's my understanding, via an article of an engine buildup by Speed Hound Tuners featured in Vette Magazine, that the FAST intake is only effective if you go to a 90mm throttle body or larger. Hope that helps.
Former Vendor
Joined: Mar 2004
Posts: 1,518
Likes: 7
From: Valencia CA
Yes...especially on a larger CID motor more with higher air requirements.
Do a search...Ive posted on this topic many times, as have others.
(And its still "effective" even without the 90, but personally I would step up and do the 90 as well).
Do a search...Ive posted on this topic many times, as have others.
(And its still "effective" even without the 90, but personally I would step up and do the 90 as well).
Thread Starter
Instructor
Joined: Dec 2002
Posts: 183
Likes: 0
From: Shelby Twp MI
Originally Posted by Tony Mamo
Yes...especially on a larger CID motor more with higher air requirements.
Do a search...Ive posted on this topic many times, as have others.
(And its still "effective" even without the 90, but personally I would step up and do the 90 as well).
Do a search...Ive posted on this topic many times, as have others.
(And its still "effective" even without the 90, but personally I would step up and do the 90 as well).
Pro
Joined: Jan 2005
Posts: 559
Likes: 0
From: Plano TX
I heard it is not worth the money, except when running NOS with the backfire wall things to keep it together. I heard that it doesn't flow any better than the LS6. Could be wrong, but I did hear this more than once. good luck
--Marc
--Marc
Melting Slicks
Joined: Dec 2000
Posts: 2,118
Likes: 2
Originally Posted by Lithium
I heard it is not worth the money, except when running NOS with the backfire wall things to keep it together. I heard that it doesn't flow any better than the LS6. Could be wrong, but I did hear this more than once. good luck
--Marc
--Marc
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Race Director
Joined: Jan 2001
Posts: 11,183
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From: Castle Rock CO
St. Jude Donor '15
There have been several threads in the C6 tech section about the LS2 intake and it appears to be a POS. LPE has posted about the benefits of the LSX intake in regards to the LS2 and it sounds like it is the way to go. They did mention the LS2 throttle body bolts right up to the LSX, so it may be a cheaper alternative to the other 90mm TBs out there.
Todd
Todd
Drifting
Joined: Jan 2004
Posts: 1,661
Likes: 13
From: Knoxville TN
Is Fast Lsx 90 Worth It?
The more radical or the larger the motor becomes, the more a FAST 90 intake and TB will help. On a stock cubic inch or slightly modded engine, the intake and TB are not a restriction but as the cubes grow the intake and TB become a restriction. My car is a 346 A4 H/C car and I picked up 18 HP and 18 TQ by going from a LS6 intake and stock TB to a FAST 90 and NW TB. If 20-25 HP is worth $1400 to you, then I say go for it.
