King Nothing

iTrader: (9)

so can the guys at FAST say why they aren't makin the other manifolds for the LS engines anymore?

bww3588

iTrader: (49)

they have no reason to. the 102 works for all engines fine.

King Nothing

iTrader: (9)

they wont put too much air into the engine if it doesn't have a big enough cam or great enough flowing heads?????

bww3588

iTrader: (49)

nope. the engine will only take as much air as it needs, and if memory serves me correct, the only difference between the 90 92 and 102 is the TB opening and the 102 has removable runners.

same with the 78 and 90, the runners are the same, thats why you used to see people taking 78 intakes and putting 90mm openings on them.

King Nothing

iTrader: (9)

thanks for sheddin some light on the subject.

garygnu

you will need different fuel rails.only thing that matters is runner length and cross section area.

ls1 1990 VN

When different fuel rails are used, are the engine covers able to be fitted?

SweetS10V8

iTrader: (4)

LS2 & LS3 will. LS1 may be able to.

Mac 2002 SS

iTrader: (6)

I'm in the market for FAST intake ,but I would prefer a 92 mm intake and no one seems to sell them anymore.

here's a link to : FAST 92 vs FAST 102 on stock bottom end LS1

https://ls1tech.com/forums/generatio...ts-inside.html

King Nothing

iTrader: (9)

^thank you

Midnight02

iTrader: (8)

Thanks Mac...I guess that answers that question!

Mac 2002 SS

iTrader: (6)

Yeah ,it seems to answer all of our question but as you can see that test was done with a 102 intake with 90 mm tb and they didn't tune it and it made 9 hp more than the " Tuned" ported 92 mm intake and 90mm tb.

They also claim that the 102 fits better than the 92 intake . I guess I can get a 102 intake /92 mm tb set-up and it should work just fine.

Outlaw E36

iTrader: (23)

Is the ls2 fuel rails the only thing that would be needed to run the 102 on an ls1.? Can i use stock ls2 rails or do they have to be the fast version of the ls2rails.?

SweetS10V8

iTrader: (4)

FAST makes the kit for the LS2/LS3 rails, it includes the rails and mounting hardware. 146021-kit

Silver408z

iTrader: (1)

This is wrong. The 102 is a different design. Tony Mamo has talked many times about the differences and how the design of the 102 is improved over the 90/92 intakes. It is not just a bigger TB opening.

King Nothing

iTrader: (9)

isn't it harder to tune (for drivablility) the 102 compared to the 90 and the 92? i'm just afraid this intake is too much for my 347 LS1. the heads are stage II 243's from west coast cylinder racing head with a TR227/224 cam. the reason i'm goin with this cam is because it only has 300 miles on it and i'd like to get use out of it, down the road i plan to upgrade to a 23X/23X cam

bww3588

iTrader: (49)

i agree, the design is different, but the mechanics of the intake are the same. i.e plenum volume, runner length...etc...the design changes have nothing to do with the functionality of the intake. even if they did, it in no way changes it to where it is "too much" for a stock LS1. otherwise, they wouldnt have stopped selling the 90/92 and replaced it with the 102. that would be stupid because they would have lost out on 2/3 of their market to sell to because not everyone has 600+hp engines.

bww3588

iTrader: (49)

its not too much...this intake was intended to superscede (sp?) all other FAST intakes, it is perfectly fine with a stock LS1.