Fast 102 Results Dissapointed
Fast 102 Results Dissapointed this was the old set up. 346ci stock block
Ls6 intake
114 .600 lift cam 236
mid headers
freemods
shanner TB
LG air lid
Car made 403rwhp and 382rwtq
Added the
Fast 102mm
PTM Tb 102mm
85mm Maf
Fast toys Airlid
Ls2 fuel injectors
open cutouts
Made 402rwhp and 376rwtq but it was 103 outside while tunning Man i need some heads
Ls6 intake
114 .600 lift cam 236
mid headers
freemods
shanner TB
LG air lid
Car made 403rwhp and 382rwtq
Added the
Fast 102mm
PTM Tb 102mm
85mm Maf
Fast toys Airlid
Ls2 fuel injectors
open cutouts
Made 402rwhp and 376rwtq but it was 103 outside while tunning Man i need some heads
unless you dyno'd in the same conditions, that info is useless... If your old numbers were in 60 degree air with low humidity, then you probably gained 10-15whp. Take it to the track and see if your trap speed picked up.
I haved gains with FAST 102s on 346s, but they are very minimal and only showed after 6k+. So I feel your frustration. The heat/humidty I am sure played a factor as well in netting no good results. 
Thats a big intake for a stock cube motor, get long tubes and ditch those mids.. The Ls6 intake becomes a restriction at about 115~ whp. When you get good heads make sure they are matched for your cubes to get more out of the setup.
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This intake was not designed to work to it's potential in a stock headed application 
You can't expect the FAST 102 to provide the gains that you would see when going from the stock LS1 intake to the LS6 intake (on a stock head motor). The LS6 intake is *nearly* optimal for a stock head motor, though you will see a few hp gain with a FAST 90/92. However, the stock heads/cubes are going to be the bottleneck at this level of engine, NOT the intake. The engine works as a system, not by the individual components.
You can't expect the FAST 102 to provide the gains that you would see when going from the stock LS1 intake to the LS6 intake (on a stock head motor). The LS6 intake is *nearly* optimal for a stock head motor, though you will see a few hp gain with a FAST 90/92. However, the stock heads/cubes are going to be the bottleneck at this level of engine, NOT the intake. The engine works as a system, not by the individual components.
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A FAST 102mm is a HUGE overkill for a 346ci motor. FAST 92/92 is the biggest thing a stock motor can really utilize and make it worth the money IMO.
Another internet myth that needs debunked. Bigger isn't always better.
Another internet myth that needs debunked. Bigger isn't always better.
Teching In
Joined: Jun 2010
Posts: 8
Likes: 0
From: od, tx
Well If u ask me I had one hell of a gain on the 102 intake just slapped the 227heads an 102 lsxr & tb on ls1 not stroked
Ms4
Pace headers an few add ons no spray stck suspension
Ran 11.6 on a .9 reaction no stall on a 100shot
Ran 12flat no stall on about 5000da Hobbs nm
Ms4
Pace headers an few add ons no spray stck suspension
Ran 11.6 on a .9 reaction no stall on a 100shot
Ran 12flat no stall on about 5000da Hobbs nm
Well If u ask me I had one hell of a gain on the 102 intake just slapped the 227heads an 102 lsxr & tb on ls1 not stroked
Ms4
Pace headers an few add ons no spray stck suspension
Ran 11.6 on a .9 reaction no stall on a 100shot
Ran 12flat no stall on about 5000da Hobbs nm
Ms4
Pace headers an few add ons no spray stck suspension
Ran 11.6 on a .9 reaction no stall on a 100shot
Ran 12flat no stall on about 5000da Hobbs nm
You're obviously not intake restricted, so there were very little gains to be had by upgrading the intake. A better set of heads, and long tubes, and you'll take advantage of the better intake.
Teching In
Joined: Jun 2010
Posts: 8
Likes: 0
From: od, tx
102 FAST airlid
100mm MAF
102 lsxr
102 tb
stg 2 loudmouth exhaust & ofcourse headers
looks like LS6 intake is a good bang for the buck.
Thanks for posting your results, alot of guys are to embarrased to share them but your not the only one that hasnt seen huge gains from a 102 .
Im sure the humidity held you back a couple of Hp but I dout it could of been much.
Seems like Heads are a better bang for the buck and are worth the extra work.
Thanks for posting your results, alot of guys are to embarrased to share them but your not the only one that hasnt seen huge gains from a 102 .
Im sure the humidity held you back a couple of Hp but I dout it could of been much.
Seems like Heads are a better bang for the buck and are worth the extra work.
wow thats crazy, i just upgraded my stock ls6 to a 96mm aluminum intake with matched throttle body and 85mm maf to take advantage of the lift of my cam. my ls6 was restricting it. i know that once i upgrade my heads it will deffinately wake up both my intake and cam. but fwiw get a really good flowing exhuast, and a nice set of 1 3/4" lt's and you'll see 415 maybe 420 with a really good tune.
