FAST 90 Intake to 102 Intake ,Thoughts?
i understand that they have different designs, but the 102 and 90 and 78 ect are nearly identical in the way they flow and respond. i dont care how they are put together. but if you switch out a 90 and 102 and put the same 90 mm tb on it, you will gain **** if your lucky.
i understand that they have different designs, but the 102 and 90 and 78 ect are nearly identical in the way they flow and respond. i dont care how they are put together. but if you switch out a 90 and 102 and put the same 90 mm tb on it, you will gain **** if your lucky.
As for the Hp number.. A 102/102 setup will make more peak Rwhp than a 90/90 setup, it has been proven. On the bigger cube motors, it is even more of a gain. But a stock cube Ls1 will pick up a minimum 7-8Rwhp. For the money, it is worth it to me.
I was under the impression that they were quite different, besides being 2/3 piece designs.
As for the Hp number.. A 102/102 setup will make more peak Rwhp than a 90/90 setup, it has been proven. On the bigger cube motors, it is even more of a gain. But a stock cube Ls1 will pick up a minimum 7-8Rwhp. For the money, it is worth it to me.
As for the Hp number.. A 102/102 setup will make more peak Rwhp than a 90/90 setup, it has been proven. On the bigger cube motors, it is even more of a gain. But a stock cube Ls1 will pick up a minimum 7-8Rwhp. For the money, it is worth it to me.
Launching!
Joined: May 2010
Posts: 274
Likes: 1
The TB opening isn't the restriction on 346/364 cube motors, the runners are. The FAST 102 has smaller runners than the 90/92, which is probably why its makes a few more hp under the curve.
http://forums.corvetteforum.com/c6-t...02-back-5.html
http://forums.corvetteforum.com/c6-t...ost-power.html
A vendor stated, "and I would like to point out what I have told EVERYONE who has called or PM'd me regarding the FAST 102mm. It is intended as a replacement for the 92mm, not an upgrade. It is not intended to be better than a 90 or 92mm, and whether it is a few HP better than the 90/92 or not I would not prod a customer to make that change. It's simply the newest version of the FAST for those coming from a stock style intake looking to get the best composite stock style manifold they can get, just like the 92 was. "
http://forums.corvetteforum.com/c6-t...02-back-5.html
http://forums.corvetteforum.com/c6-t...ost-power.html
A vendor stated, "and I would like to point out what I have told EVERYONE who has called or PM'd me regarding the FAST 102mm. It is intended as a replacement for the 92mm, not an upgrade. It is not intended to be better than a 90 or 92mm, and whether it is a few HP better than the 90/92 or not I would not prod a customer to make that change. It's simply the newest version of the FAST for those coming from a stock style intake looking to get the best composite stock style manifold they can get, just like the 92 was. "
I sold my brand new Fast 92 to get a 102 just because I dont want to get my build together, get her on the dyno, and then constantly wonder what Im missing out on... Peace of mind was worth the 80 bucks I ate on my Fast 92 in my mind 
... Until the NEW Fast comes out down the road
... Until the NEW Fast comes out down the road
I sold my brand new Fast 92 to get a 102 just because I dont want to get my build together, get her on the dyno, and then constantly wonder what Im missing out on... Peace of mind was worth the 80 bucks I ate on my Fast 92 in my mind
... Until the NEW Fast comes out down the road
... Until the NEW Fast comes out down the road
I sold my brand new Fast 92 to get a 102 just because I dont want to get my build together, get her on the dyno, and then constantly wonder what Im missing out on... Peace of mind was worth the 80 bucks I ate on my Fast 92 in my mind
... Until the NEW Fast comes out down the road
... Until the NEW Fast comes out down the road
Then you need to be looking at a sheetmetal or an itb intake. Any stock style plastic intakes are leaving HP on the table.
Since the runners are removable you could pop in a new set of high RPM runners and make it act like any sheetmetal intake. It would loose torque and gain much more high RPM power....but then you could go back
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I don't know about that either. I wanted a sheetmetal when my motor was built. I was advised against it for a street car, and shown a dyno graph overlay of a 447 with a sheet metal and a 440 with a fast. The 447 made about 10rwhp more at peak, but the 440 killed it everywhere else, especially in tq.
TECH Fanatic
Joined: Aug 2004
Posts: 1,373
Likes: 4
From: Auckland, Nth Is, New Zealand.
What gains if any would i likely see if i swapped out my 78mm tb & LS6 intake for a NW 96mm tb & Fast 102 intake.
Been following closely what you guys & Aussie are saying but no one has mentioned anything but the 90/90 or 92/92 swap for the 102
Been following closely what you guys & Aussie are saying but no one has mentioned anything but the 90/90 or 92/92 swap for the 102
the intakes themselves are nearly identical. the only difference is the TB opening.
switching the intake alone, and sticking with the same 90mm tb is pointless. you may see a few hp just from the throat of the TB opening being bigger, but the runners and such are nearly identical.
switching the intake alone, and sticking with the same 90mm tb is pointless. you may see a few hp just from the throat of the TB opening being bigger, but the runners and such are nearly identical.
Yeah what is the going rate for a used 90MM Fast intake and TPIS 90 MM TB?
One way to see if your intake is a restriction is to log the intake pressure sensor (kPa), and do a few wot runs to redline. If your kPa starts to fall off, then you're pulling a vacum and you have a restriction somewhere in your intake tract.
This is no gaurantee that it's your intake manifold, or that you will or won't gain power from switching, but it's a start. If it stays at 98-99 throughout the rpm band, then you might not get much hp gain, or it could be the intake runners that are the restriction.
This is no gaurantee that it's your intake manifold, or that you will or won't gain power from switching, but it's a start. If it stays at 98-99 throughout the rpm band, then you might not get much hp gain, or it could be the intake runners that are the restriction.
I recently picked up a ported 92 for 750 shipped and got a new nw tb for 320 shipped. With the 102 you also have to remember to add in the cost of new fuel rails and the tb are 400-500 from what I remember seeing. Plus add extra if you want the intake ported.
