cabotgsxr

iTrader: (2)

Im pulling the trigger friday on the new 102mm FAST intake and throttle body.
I was wondering if I should get the fast the FAST throttle body or the PTM that TSP offers? other than price whats the difference between the two?

bayer-z28

iTrader: (14)

FAST TB's were known for sticking issues on the 90's.. Not sure if they have fixed it or not.

Intercooler2

iTrader: (24)

Just curious why you are going to that setup? Do you have the other things to support it?

I see they were to dyno test it but a 92 can go 96. How much can a 346 cube motor need really?

cabotgsxr

iTrader: (2)

PRC 215's and Tsunami cam is why im getting the intake.

bayer-z28

iTrader: (14)

Ok.. If you're really set on it then go ahead. I'd say a 92 would be fine, but that's just me. But then again, if I had the money, I'd go with the 102 as well.. I've read LS2 rails are fine, but it also says LS3 rails work as well.

Depends if he's still pulling vacuum @ WOT.

MonmouthCtyLS7

iTrader: (6)

Also heard of fast's sticking years ago but i believe they have been corrected...I would go w/ the best price.

SLOC5LS6

Nice! a FAST 102 is definately the cheaper route to go vs to getting a FAST 92 and then having it ported if starting from scratch. post results

Dennis@SpectacleSolutions

iTrader: (16)

The sticking issue was fixed long ago on the 92mm tb's. I can give you a great deal on the complete FAST combo. I'll do the FAST combo for $1,290 shipped.

WS6TransAm01

iTrader: (13)

92 or 102?

SIC LSX

iTrader: (10)

get this TB https://ls1tech.com/forums/new-produ...now-stock.html

clebmotors

iTrader: (2)

BigRobSS

iTrader: (1)

I would assume thats on the 102 since they discontinued the 92.

SSIRBY

iTrader: (44)

he may be talking about the 92 setup. thats cheap for 102 setup. just cause its discontinued doesnt mean vendors dont still have'em. just saying.

BigRobSS

iTrader: (1)

The Fast 102 is selling for around $850 and you can pick up the PTM 102 TB or a similar for $400. The deal sounds about right for a 102/102 combo...just sayin.

SSIRBY

iTrader: (44)

where is a 102 for 850? i've only seen them for 950.

BigRobSS

iTrader: (1)

Texas speed is one, who is a sponsor. There are others as well.
http://texas-speed.com/shop/item.asp?itemid=892

clebmotors

iTrader: (2)

YA but where he is getting at is the sponsor said for an all FAST setup 1290 shipped which is an awesome deal considering the fast tb is 519. And why does texas speed have a 100$ difference on what appears to be the same intake, ls7 and ls3? (102mm setup)

SweetS10V8

iTrader: (4)

The FAST 102mm Throttle body has a small convolute (sp) build into it to help idle, drivability, and off idle issues with large throttle bodies.

I can have my brother send or post pics if you want to see.

MonmouthCtyLS7

iTrader: (6)

Seems like overkill on a stock LS1 setup....id try to find a used 90/92. The 102 is obviously made for a gen 4 motor

SweetS10V8

iTrader: (4)

Your thinking about it wrong. The individual runners are what dictate if the intake is "to large or to small", they create their own velocity and airflow to each cylinder. The throttle body opening is mearly an overall intake restriction, so if you have no restriction at 92mm run a 92mm.

Straight off the website

" The FAST™ LSXR™ 102mm Intake looks massive when compared to the stock intake. How much of a power increase can I expect to get from this thing?

This is a major misunderstanding in our market. Throttle “diameter” has absolutely nothing to do with torque curves or if an engine makes power down low or up high. All it does is dictate how much restriction the intake will see (less is better), and the size is directly proportional to throttle metering. If you open a large diameter throttle 10%, it is equivalent to opening a smaller diameter throttle 15%. To address this, the FAST™ Big Mouth 102mm Throttle Body™ (part #54102) has a convoluted shape to help with low speed drivability. FAST™ only recommends 102mm throttle bodies with “convolute” barrels for proper drivability. "