[Z06] FAST 102 guys, please step in.
Thread Starter
Racer
Joined: Jun 2015
Posts: 373
Likes: 21
If you do the fast 102 and 90mm ls2 TB get a Vmax reducer ring for your fast, made my idle much easier to tune out. I thought it was a scam but for $55 I didn't worry about it to much, well it did make a difference for sure around idle, AFR heads/BTR stage 4 cam/Fast 102/90mm ls2/LT's and Catless X is the combo fwiw.
Burning Brakes
Joined: Feb 2005
Posts: 1,201
Likes: 14
From: Honolulu, HI
After a couple of attempts by several tuners my setup idles fine, and while drivability isn't stock it's close enough.
Has has a milder HCI setup a Aluminum flywheel, Mcloed RST, 10% ATI UD. Check my profile for the whole list.
It's apparently a hard setup to tune, I was flat-out refused at one place that is VERY well liked, always talked about as "the best tuner in Southern Cali". But once I mentioned my setup, nope...
Josh at A&A ended up spending some time and got it running well.
Has has a milder HCI setup a Aluminum flywheel, Mcloed RST, 10% ATI UD. Check my profile for the whole list.
It's apparently a hard setup to tune, I was flat-out refused at one place that is VERY well liked, always talked about as "the best tuner in Southern Cali". But once I mentioned my setup, nope...
Josh at A&A ended up spending some time and got it running well.
Thread Starter
Racer
Joined: Jun 2015
Posts: 373
Likes: 21
I could be wrong, but I don't want to risk that.
Pro
Joined: Sep 2014
Posts: 540
Likes: 8
I don't think there's any reason to run a 100mm TB on your combo other then killer looks, a 100mm TB flows enough air for serious amounts of horse power, I have a Wilson 100mm TB on my 540" Twin Turbo BBC and that's around 3000hp just as a example, I believe the Stock LS2 TB paired with a long runner fast 102 is a great combo for a high revving stock cube motor, 90mm is plenty of CFM for 500+whp NA. just get the ring. It works if you go 90mm
Thread Starter
Racer
Joined: Jun 2015
Posts: 373
Likes: 21
I don't think there's any reason to run a 100mm TB on your combo other then killer looks, a 100mm TB flows enough air for serious amounts of horse power, I have a Wilson 100mm TB on my 540" Twin Turbo BBC and that's around 3000hp just as a example, I believe the Stock LS2 TB paired with a long runner fast 102 is a great combo for a high revving stock cube motor, 90mm is plenty of CFM for 500+whp NA. just get the ring. It works if you go 90mm
Acct Suspended APR 2026 by request
Joined: Dec 2010
Posts: 10,367
Likes: 1,272
2020 Corvette of the Year Finalist (performance mods)
C5 of Year Winner (performance mods) 2019
it really isn't needed if you are going to boost the car... I'm making 800+ through a stock ls6 intake/tb, no problems... not to mention the fast intakes are far weaker than a stock intake and are notorious for cracking when pressurized
Advanced
Joined: Feb 2014
Posts: 93
Likes: 36
From: St Charles Illinois
I agree also. Get the velocity ring for the fast 102 for the LS2 TB. As for N/A vs FI? I have 2 vettes; my C4 is supercharged and my 03Z is N/A. Too different cars. If your only concerned about power the go FI but if you can try and get a ride or drive one of each and see what you like. They are both fun in there own way. To me the raw torque and power of FI is intoxicating but also is having your car N/A with incredible throttle response hearing the cam and winding to 7G. Both great options!
Thread Starter
Racer
Joined: Jun 2015
Posts: 373
Likes: 21
I have the old fast 78, so I wanted to step up to 102 because I planned on nitrous. And now that I changed my mind back to blower, I'd still rather use the 102 because it's stronger than the 78. Not to say the 102 won't or can't crack, but the older ones are definitely weaker and since I have it. I'll use it. If my car had the stock ls6 intake I would of left it alone lol.
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Thread Starter
Racer
Joined: Jun 2015
Posts: 373
Likes: 21
I agree also. Get the velocity ring for the fast 102 for the LS2 TB. As for N/A vs FI? I have 2 vettes; my C4 is supercharged and my 03Z is N/A. Too different cars. If your only concerned about power the go FI but if you can try and get a ride or drive one of each and see what you like. They are both fun in there own way. To me the raw torque and power of FI is intoxicating but also is having your car N/A with incredible throttle response hearing the cam and winding to 7G. Both great options!
Pro
Joined: Sep 2014
Posts: 540
Likes: 8
I believe the 102 will be fine on a blower car if you plan on keeping it reasonable, I'm sure anything 18-20psi or under it will be fine, it was the older 90's that had cracking issues. I'm pretty sure fast rates the 102 to somthing like 68psi but we all know that's a little rediculous. 68psi would be around 2500whp lol
Thread Starter
Racer
Joined: Jun 2015
Posts: 373
Likes: 21
I believe the 102 will be fine on a blower car if you plan on keeping it reasonable, I'm sure anything 18-20psi or under it will be fine, it was the older 90's that had cracking issues. I'm pretty sure fast rates the 102 to somthing like 68psi but we all know that's a little rediculous. 68psi would be around 2500whp lol
