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

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Old 02-22-2010, 07:12 PM
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Old 02-22-2010, 09:13 PM
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Originally Posted by GTO1_OHIO
...according to The FAST website the 102 design makes it easier to port. "Removeable runners for easy porting"

... so I'm guessing it can be ported.
I'm thinking it's going to be harder.
Old FAST:


Notice how you can separate the runners in half to have easy access to the entire tract, so you can open it up and smooth it out; upper half, then lower half. Also, you have access to the ports from the inside, so you can bolt the bottom half of the intake down to a head and match the ports to each other. This is worth a lot of flow.

The new 102:


Here, the runners come out of the intake as a whole. They market this as being easy to port since you can physically hold them in your hand, but unless that runner comes apart, you can only port as far as you can stick a Dremel in there, and how accurate can it be without being able to see? Also, port-matching will be impossible (within reason). Note that this is a pre-production piece, so the runners are a bit shorter, but the layout is the same.
Old 02-23-2010, 02:43 AM
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so im guessing the results suck since they havent posted yet
Old 02-23-2010, 03:11 AM
  #104  
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Ive been porting for about six years now and my guess is that it wouldnt make much of a difference from 92 ported to 102 ported on a 346, but one on a 402 or 421 should show a larger gain not to mention on a boosted application.
Old 02-23-2010, 08:17 AM
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results??????
Old 02-23-2010, 08:57 AM
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Didnt mean to keep everyone in suspense guys... Getting time to do what we want to do has been more difficult than originally thought.

I DO have a C6 LS2 H/C Vette hitting the dyno after lunch. We will Baseline the car as it sits and then install a 102mm manifold with several different TBs... Hope to have the results up good OR bad this evening/first thing tomorrow!!
Old 02-23-2010, 09:13 AM
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Well there you go, from the man himself. The shops been busy and it must be tough to keep the customer cars being finished on schedule and do FREE testing for all of us here on tech. Thanks for the update Ron.

As I stated before, you got a very captive audience here and some people forget you are running a business, not just testing parts. Looking fwd to the results. Later Bro !!
Old 02-23-2010, 09:23 AM
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that new fast has a much better inlet transition...very nicely radiused...I think it should a gain over the 92 even on an ls2 now that I have seen a runner picture...should be interesting
Old 02-23-2010, 10:30 AM
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Originally Posted by allngn_c5
Well there you go, from the man himself. The shops been busy and it must be tough to keep the customer cars being finished on schedule and do FREE testing for all of us here on tech. Thanks for the update Ron.

As I stated before, you got a very captive audience here and some people forget you are running a business, not just testing parts. Looking fwd to the results. Later Bro !!
Could not have said it any better!
Old 02-23-2010, 10:39 AM
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Originally Posted by Ron@Vengeance
Didnt mean to keep everyone in suspense guys... Getting time to do what we want to do has been more difficult than originally thought.

I DO have a C6 LS2 H/C Vette hitting the dyno after lunch. We will Baseline the car as it sits and then install a 102mm manifold with several different TBs... Hope to have the results up good OR bad this evening/first thing tomorrow!!
Thanks for the update Ron.
Lets give him some time to get accurate results for a few different setups.
I rather get accurate results on the new 102 then just rush it through.
Old 02-23-2010, 12:51 PM
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Originally Posted by 81 LQ9 Bu
Ive been porting for about six years now and my guess is that it wouldnt make much of a difference from 92 ported to 102 ported on a 346, but one on a 402 or 421 should show a larger gain not to mention on a boosted application.
Thats what I think.
Old 02-23-2010, 12:52 PM
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Originally Posted by Ron@Vengeance
Didnt mean to keep everyone in suspense guys... Getting time to do what we want to do has been more difficult than originally thought.

I DO have a C6 LS2 H/C Vette hitting the dyno after lunch. We will Baseline the car as it sits and then install a 102mm manifold with several different TBs... Hope to have the results up good OR bad this evening/first thing tomorrow!!
Would happen to have a H/C C5 346 available too?
Old 02-23-2010, 09:35 PM
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i wanna see this.
Old 02-23-2010, 09:42 PM
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On my friends small cam full bolt on g8 from swapping his stock l76 manifold toa slightly ported 102mm ls3 version he gained 23hp 14 tq after tunning if you want proof check out te g8board and type fast 102mm in search board to look fo his results
Old 02-23-2010, 10:45 PM
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waiting with cash. LOL
Old 02-23-2010, 11:41 PM
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defiantly interesting
Old 02-24-2010, 11:56 AM
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waiting for results.....
Old 02-24-2010, 11:59 AM
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LOL the suspense is building
Old 02-24-2010, 01:25 PM
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If this thing makes more than an extra 10rwhp from the 90 or 92 then yeah its worth it but for 5 or < then the extra money can go somewhere else.
Old 02-24-2010, 01:31 PM
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were these results at.


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