slowlsx

iTrader: (28)

i have a 00 camaro with the following

6.0 lq4
PRC 5.3 stage 2's (58cc) 11.xx compression?
circle D 5c (4000-4400)
tsunami cam 235/240
TSP 1 7/8's
36lb injectors
410's
lid
92mm TB
SD tune

im looking to get well into the 10's i would say i would be happy with 10.70's. do you guys think i would need a fast 102 or a 90 or 92 would do the job and maybe get lucky and find one used and ported?

my previous set up was stock bottom ls1,same heads(64cc's),STOCK ls1 intake,stock injectors,3600 circle d,231/234,1 3/4 headers,410's and ran 7.20's so i dont think 6.80's is asking for a whole lot.

02sslayer

iTrader: (4)

im running the tsunami also, and i just picked up a fast 90/90 for my car yesterday. if i were you id try to find a fast 90 or 92. go to summitracing.com you can still buy a fast 92 on there and you save alot of money over the 102

02sslayer

iTrader: (4)

well actually, they still had them a couple weeks ago. im not sure if they still do, and it wasnt listed under intake manifolds. it was under some other thing

Darkman

iTrader: (2)

Buy the FAST 102, and get it ported if you can - you will not regret it.

slowlsx

iTrader: (28)

i looked and did find anything, there is a guy selling a 92 for 600 he posted it up yesterday just try to see if the 102 is worth spending an extra 500 because thats about what its going to cost with the fuel rails. is there any threads on this? as far as power difference from 92 to 102? i like to do things once. if i ever make chages to the car later it will be better heads and a cam switch.

Darkman

iTrader: (2)

At some price one might consider the FAST 92 rather than the FAST 102. For example, it would be hard to turn down a free FAST 92 and buy a FAST 102 (and fuel rails) instead. On the other hand, buying components that you outgrow and have to replace later can be expensive too. In this case, the cylinder heads in place already outflow a FAST 92 so it would be "obsolete on arrival" in from a performance perspective.

09camaro383

iTrader: (2)

your are looking more then 500 i will say near 1100!! you also going to need a fuel rail kit with the spacers 180+ and there is no point to go with a 102mm intake if you run a 90/92mm throttle so you also going to need a 102mm throttle and that is at least 400+ i have a 383 with a 90/90 ported and flows all the air that i need if you had a 427 I will say a 102 but for a 6.0 a 92 is more than enough

Look what I found!!

Flowed our LS2, 243 CNC'd head on a 4.00" bore. Runner volume is ~225 cc and these are with 2.00" intake valves. These are going on a project here and since we have a few of the new 102's, I figured it was appropriate to update the flow numbers.

Fast 92 - Stock
.100 71.4
.200 144.7
.300 205.9
.400 235.7
.500 259.0
.550 270.8
.600 272.6
.650 276.2

Fast 102 - Stock
.100 74.4
.200 150.7
.300 211.9
.400 241.7
.500 265.6
.550 271.7
.600 274.0
.650 278.4

here is the link of the original post

http://forums.corvetteforum.com/c6-t...w-numbers.html

earmuffs

not enough data to show the price jump for the 102, go with a 90/90 combo

Darkman

iTrader: (2)

It depends on how you look at it I suppose. Based on the data contained in the cited article, even the ported FAST 102 did not outflow the OP's heads.

Fast 102 - Ported
.100 73.7
.200 150.7
.300 213.7
.400 244.1
.500 269.2
.550 280.7
.600 286.5
.650 291.9

outkast6991

iTrader: (34)

most intakes don't outflow a decent set of heads

Darkman

iTrader: (2)

i agree. An LS6 intake has flows that match stock 243s pretty well, but beyond that heads outpace plastic intakes.

02sslayer

iTrader: (4)

just picked up a 90/90 myself and im very happy i didnt have to spend 2000 grand on the entire 102 setup, i spent $500 with NW 90 tb, much better deal

bayer-z28

iTrader: (14)

I ha e literally been looking for these flow numbers for YEARS!!! I found my P+P LS6 flow numbers, which are pretty good to have me stay with them for another year, but I agree. The difference between the 102 and the 92 isn't worth the price IMO.

NHRAFORMULA00

iTrader: (2)

Look in the midwest section for sale adds,fast for sale for 600$

Darkman

iTrader: (2)

Based on the flow data referenced above alone, one would conclude that an LS2 Intake is essentially the equal of an LS6 Intake; and that the FAST 92 Intake is only slightly better than either the LS2 Intake or the LS6 Intake. Those conclusions would be completely at odds with the other flow data as well as dyno results that I have encountered. I wonder what that all means.

Tony Mamo @ AFR

iTrader: (13)

Guys,

The 102 properly reworked kicks the old style intake (90/92mm) in the azz....seriously

Its a much better piece out of the box and even better with the right modifications (porting) later.

Check this thread and think about the fact I saw over 320 CFM "net" flow to the cylinder flowing one of the intake ports of a 355 CFM head on my bench (our new AFR 245).

https://ls1tech.com/forums/generatio...-102-fast.html

Here is a pic of when I flowtested the intake to see how much it hurt the intake ports flow compared to a radius plate....



With a ported 92 I would have been lucky to see a little over 300 CFM's net....20 CFM is huge. Don't forget that the better the head the higher the demand on the intake and this head requires a really high flowing manifold to extract the most it has to offer.

The 102 IS a better piece...better designed....much more rugged build construction and unfortunately more expensive with the additional fuel rail costs and what not but if your swinging for the fences, this is the bat you want to pick up when you head to the plate!

-Tony

PS....Note in the pic above all the other air passageways are blocked forcing the intake port of the manifold runner being tested to pull from the front plenum just like it would on a running engine....it couldn't pull any air to help fill the cylinder thru any other ports or injector holes....they were all taped/blocked off. The work I did to the intake added almost 20 CFM to the bottom line!

chrs1313

iTrader: (24)

^throw a radius on that inlet Tony

quick out of the box question what have you seen 1kpa to be worth on around a 500rwhp setup...

has anyone seen the difference of a 102mm Tb vs 92mm Tb on a fast 102 setup...

I got a few ideas rolling around over here Tony...we can pm to not sidetrack this thread to far...

Tony Mamo @ AFR

iTrader: (13)

No need....I had one that I made out of wood and held there for the test....it didn't matter....LOL

See pic of it here



The hole is so damn big that when only one port is pulling thru it there isnt enough velocity there for the edge of the entrance to effect the airflow in a negative fashion....pulling on all eight cylinders however would be a different story.

The airflow stayed the same with or without the radius in this particular test....note a radius did make a small difference in the 92 mm intakes I tested exactly the same way. Dont forget the 102 is actually 22% larger in cross sectional area....thats substantial (and thats over a 92 mm intake....25% over a 90 mm).

Cool stuff....

-Tony

chrs1313

iTrader: (24)

Haha yeah I was just messing...have you dynoed an engine with that plate on and with it off...what were the hp differences vs the kpa differences...

reason I ask is I ran some numbers and if anyone is using a lid (mine FTP 98mm) it becomes the restriction over the Tb size...when I flowed the lid I came up with a perfect orifice size equivalent of 3.33" dia (84mm)...

So taking that into consideration if you swap from a 92mm Tb to a 102mm Tb on a fast 102 I am willing to bet the gain is none due to the lid being the choke point...assuming SD tune so the maf doesn't come into play...

So when a 346 (in my case) is at peak rpm and assuming 100% VE the engine will need around 700cfm through the intake...

The flow through the 84mm equivalent lid setup vs an orifice plate 102mm is around 4" WC or 1kpa...but the question I have is what is this worth in hp?

I assume it is only around a few hp if anything at all...So I am curious if you have ever ran an open Tb setup vs one with an orifice plate and noted the hp difference and the associated kpa...I can then try and prorate it for my setup and hp levels...If not I plan on testing this the next time my car or a friends is on the dyno...

Chris

slowlsx

iTrader: (28)

there isnt really any good deals on fast 92/92's in the classifieds right now.

im thinking of just spending the money now get the 102 with rails, put the 92mm TB and later on when i upgrade my heads to some prc227/237's ill upgrade the TB to 102 and send the intake to tony and that should really wake the car up!

in the end with the 102/102 ported and prc 227/237's i would like to run some 10.50's , doable?

now i need to figure out what kind of catback i want