FAST 92 vs. FAST 90?
Thread Starter
Team Owner
Joined: Nov 2001
Posts: 34,124
Likes: 105
From: Pensacola FL
FAST 92 vs. FAST 90?
I tried a search and came up with this: http://forums.corvetteforum.com/show...hlight=FAST+92
Does anybody know if the 92mm is much better? What is this about having to cut the firewall? Has anybody dynoed one versus a 90mm? Would it be overkill on a 383 with good (not insane) heads? Thanks in advance!
Does anybody know if the 92mm is much better? What is this about having to cut the firewall? Has anybody dynoed one versus a 90mm? Would it be overkill on a 383 with good (not insane) heads? Thanks in advance!
Le Mans Master
Joined: Dec 2005
Posts: 8,475
Likes: 332
From: Port Arthur, Texas 77642
I would assume this 92mm unit replaces the 90mm. If you have FAST 90 already I doubt very seriously the additional 2mm will make enough difference to justify a replacement. Just my $.02
Former Vendor
Joined: Mar 2004
Posts: 1,518
Likes: 7
From: Valencia CA
This must be the 5th thread Ive posted this in but the bottom line is a 92mm FAST wont be worth a single HP over a 90mm FAST (all else remaining equal).
The restriction is not at the snout of the intake....its much further down the line related to the up and over runner configuration and the compromises in airflow that go along with it. Not to mention in the other direction your 90mm intake opening is already restricted by your MAF, airbridge, and other related items in front of it. The new manifold has stainless hardware (nice perk), a better TB gasket, and a pretty 92 mm logo on the front....and of course a new "buzz" in the marketplace.
Save your money and get the 90 if you can.....soon you wont have that option so all this fussing will be a mute point.
Tony
The restriction is not at the snout of the intake....its much further down the line related to the up and over runner configuration and the compromises in airflow that go along with it. Not to mention in the other direction your 90mm intake opening is already restricted by your MAF, airbridge, and other related items in front of it. The new manifold has stainless hardware (nice perk), a better TB gasket, and a pretty 92 mm logo on the front....and of course a new "buzz" in the marketplace.
Save your money and get the 90 if you can.....soon you wont have that option so all this fussing will be a mute point.
Tony
Last edited by Tony Mamo @ AFR; Mar 9, 2008 at 06:23 PM.
Thread Starter
Team Owner
Joined: Nov 2001
Posts: 34,124
Likes: 105
From: Pensacola FL
This must be the 5th thread Ive posted this in but the bottom line is a 92mm FAST wont be worth a single HP over a 90mm FAST (all else remaining equal).
The restriction is not at the snout of the intake....its much further down the line related to the up and over runner configuration and the compromises in airflow that go along with it. Not to mention in the other direction your 90mm intake opening is already restricted by your MAF, airbridge, and other related items in front of it. The new manifold has stainless hardware (nice perk), a better TB gasket, and a pretty 92 mm logo on the front....and of course a new "buzz" in the marketplace.
Save your money and get the 90 if you can.....soon you wont have that option so all this fussing will be a mute point.
Tony
The restriction is not at the snout of the intake....its much further down the line related to the up and over runner configuration and the compromises in airflow that go along with it. Not to mention in the other direction your 90mm intake opening is already restricted by your MAF, airbridge, and other related items in front of it. The new manifold has stainless hardware (nice perk), a better TB gasket, and a pretty 92 mm logo on the front....and of course a new "buzz" in the marketplace.
Save your money and get the 90 if you can.....soon you wont have that option so all this fussing will be a mute point.
Tony
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