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FAST 102mm CATHEDRAL port testing to begin this weekend!!!

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Old 03-01-2010, 05:05 PM
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Originally Posted by Ron@Vengeance
Cathedral port TFS 245cc heads with FAST 92mm VS 102mm
are you gonna use the 102mm tb?
Old 03-01-2010, 07:01 PM
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how did you geta slp smooth bellow over a 90 or 92mm tb?[/QUOTE]

It wasn't easy, but it fits tight and I do not need to run a clamp as you can see, looks cleaner IMO.

To make it fit, I sanded the sharp edges on the tb snout to keep the tb from "biting" the bellow. Other then that I used a screwdriver to help force it over the tb from the inside of the bellow. It has been this way for 1 year now and fits tight, doesn't pop off, and has not ripped at all. Also I have poly mounts, if i had stock motor mounts I'm sure the twisting from the motor would cause issues.
Old 03-01-2010, 07:02 PM
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How much do the 102mm cost
Old 03-01-2010, 07:43 PM
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Originally Posted by Ron@Vengeance
In a perfect world I would have provided results with a 90mm FAST as well. Unfortunately being a C6 our customer wasnt interested in cutting his firewall for testing of an intake he was not going to keep on the car.

That being said, there are literally thousands of A/B comparisons of the FAST 90/92 over LS1/LS6/LS2 intakes all over the net. I have never seen a FAST produce 40rwhp like we did today with our ported 102.....
I'm curious what you think a 102 (ported or unported) would make over a 90/92 (ported or unported)? Since you picked up more with the 102 than you've ever seen with a 90/92, I'm assuming it's possible to gain that delta going from a 90/92 to a 102? I'm not holding you to anything, just interested in your professional opinion.



Thanks
Old 03-01-2010, 08:14 PM
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Originally Posted by DirtyBird310
How much do the 102mm cost
intake is probally 9xx not too sure on that tb is 399 for the tsp one not sure the brand 499 for the fast big mouth
Old 03-01-2010, 10:46 PM
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frist off the 102 fast intake is BIG very BIG with no room at all on a C5 corvette or f-body cowl. one can just look at the 102 and see that it will make more power! this is a big heavy intake around 20lb with a fast 90
around 14lb and is very well built, but it's BIGGGGGGGG!!!!
Old 03-02-2010, 08:22 AM
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What part is much bigger? Can we get pics vs the older models does it
flow alot more any one flow one yet? Do you think it could handle boost better then other ones?
Old 03-02-2010, 08:33 AM
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Originally Posted by smok'nZ
intake is probally 9xx not too sure on that tb is 399 for the tsp one not sure the brand 499 for the fast big mouth
You can get them for around 850 and the tb brand is PTM.
Old 03-02-2010, 11:46 AM
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Im going to be intersted to see the results from a LS6 or 90/92mm intake to 102mm intake on a stock cube LS1 (346) with only bolt-ons and or cam-only seeing as the 90/92's are not going to be made anymore and many people with bigger cams saw gains from the 90/92 setups but will the 102mm be too laggy down low for the switch?.. this is what I want to see.

Many Ls1tech'rs have only bolt-ons or just a cam but want more airflow from a nice intake, esp if they want to shoot some juice thru it, the extra incoming air will help.
Old 03-03-2010, 07:54 AM
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Got anything scheduled for this week? I can't wait to see how a stroker responds !!!!
Old 03-03-2010, 08:21 AM
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yeah for sure! im excited for more results! yeah yeah, its not super impressive over a ported 92...but soon were not going to have a choice, unless someone makes the street warrior! LMAO!

im thinking these would do good on a 346 h/c. ive read pat g's stuff on intakes and how they cut off airflow around 260cfm (ls6) and around 275-280 (fast 90/92). people are throwing heads on stock ci that flow 310-330...pretty decent numbers, and they do good, but in the end are choked by the intake....not a ton, and yes with a fast...so im sure this thing out-flows a 92, but by how much, and how would those h/c/i combos work now??? just thinking here...
Old 03-03-2010, 10:36 AM
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Originally Posted by zacht
yeah for sure! im excited for more results! yeah yeah, its not super impressive over a ported 92...but soon were not going to have a choice, unless someone makes the street warrior! LMAO!

im thinking these would do good on a 346 h/c. ive read pat g's stuff on intakes and how they cut off airflow around 260cfm (ls6) and around 275-280 (fast 90/92). people are throwing heads on stock ci that flow 310-330...pretty decent numbers, and they do good, but in the end are choked by the intake....not a ton, and yes with a fast...so im sure this thing out-flows a 92, but by how much, and how would those h/c/i combos work now??? just thinking here...

Ive still got the the LS6 Intake and my PRC heads are suposed to flow lil over 300cfm....

I have not had the car on the dyno yet but will likely want to upgrade the intake in the future just seiing what FAST set-up would be best suited for my set-up.

The 102 may be overkill? esp with 102 mm tb? Ive currently got a modified 85mm LS6 with 85mm TB but again no numbers yet but intial tuning did show a restriction in the the intake system ( something about slight pressure drop or rise I duno)


Thanks for your time and hard work Ron!
Old 03-03-2010, 11:10 AM
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The only pertinent tests are directly against the 92/92 combo on stock cubes and then on something big that needs to breath. We all know what these setups do against stock intakes. I'm guessing this is not a worthwhile upgrade for someone that already has a 92/92 setup. I'm pretty sure many vendors have already tested and found minimal if any gains by upgrading from the 90/90 or 92/92 FAST setups. I would upgrade in a heartbeat to the 102/102 even if it made the same power but carried the rpm's 200-300 higher than my current FAST 92/92. My motor runs out of air very quickly above 6400.
Old 03-03-2010, 11:22 AM
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I'd like to see power carry past 6400 as well. It would be cool to see it peak and hold all the way to the rev limiter. Holding onto 30 rwhp up top is like gaining 30 peak, depending on how you look at it.
Old 03-03-2010, 11:51 AM
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Originally Posted by allngn_c5
I'd like to see power carry past 6400 as well. It would be cool to see it peak and hold all the way to the rev limiter. Holding onto 30 rwhp up top is like gaining 30 peak, depending on how you look at it.
I agree..I would much rather shift at 7200 than at 6800.

I was thinking about going with a Super Victor but was told that my 254/262 650/650 112 lsa cam wasn't the best match for that intake. I really don't want to have to change cams for an intake swap.
Old 03-03-2010, 01:42 PM
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Originally Posted by Reboot
I agree..I would much rather shift at 7200 than at 6800.

I was thinking about going with a Super Victor but was told that my 254/262 650/650 112 lsa cam wasn't the best match for that intake. I really don't want to have to change cams for an intake swap.
I thought about an EFI Victor Jr b/c it flowed air to 7200rpms compared to FAST 90/92s 6400rpms. But the FAST provided over 40lbs-ft tq more in the midrange compared to Victor Jr.
Old 03-03-2010, 02:31 PM
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Originally Posted by SLOC5LS6
I thought about an EFI Victor Jr b/c it flowed air to 7200rpms compared to FAST 90/92s 6400rpms. But the FAST provided over 40lbs-ft tq more in the midrange compared to Victor Jr.
I have a 5000 stall and don't care that much about midrange. I was just hoping this new FAST 102 had something to offer above the 92. 7200 is about as high as I want to spin it with my current oiling system.

If I need to swap cams for a single plane I may as well spend the $$$ and go with a Victor or Cary's intake and go solid roller.
Old 03-03-2010, 02:42 PM
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Originally Posted by Reboot
I have a 5000 stall and don't care that much about midrange. I was just hoping this new FAST 102 had something to offer above the 92. 7200 is about as high as I want to spin it with my current oiling system.

If I need to swap cams for a single plane I may as well spend the $$$ and go with a Victor or Cary's intake and go solid roller.
what should be done to the oiling system to handle that high rpm 7200+
Old 03-03-2010, 02:44 PM
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Originally Posted by Reboot
I have a 5000 stall and don't care that much about midrange. I was just hoping this new FAST 102 had something to offer above the 92. 7200 is about as high as I want to spin it with my current oiling system.

If I need to swap cams for a single plane I may as well spend the $$$ and go with a Victor or Cary's intake and go solid roller.
just my opinion but i dont think fast intake could keep up with cary's carb style or efi
Old 03-04-2010, 04:52 PM
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DAMN IT! Now I want one!


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