Pro Mouse

iTrader: (15)

I have a 408 in my 2000 Trans Am,I currently have 90/90 set up.I was Considering upgrading to a 102 intake.Would I see any gains or is it even worth it? What are some of your thoughts?

mike c.

iTrader: (1)

I'm sure you will see a gain. but,what are you willing to spend if the gain is only 8hp or something. is your current fast ported?

smok'nZ

iTrader: (160)

i had a 90/90 on my cam only car and i noticed a set of the pants difference but i didnt dyno them both

odarabla

iTrader: (1)

I am sorta wondering the same thing. I am building a 402ci at the moment.

zacht

iTrader: (18)

i think there was a test done already on here, vengeance did it maybe. but they switched from a ported 92 to a ported 102 with the same 92mm TB, and picked up 8hp, so theres no telling if you also go with the 102 (hear theyre hard to tune....idk!)

also to remember, the 92/92s flow around 280cfm(iirc) so even if you do have heads that flow 320...the 102 still might hold you back....idk, it was an interesting pat g read...

X-ray

iTrader: (6)

Let's say you don't feel like having someone port an intake manifold for you. Will a FAST 102 out of the box be just as good as a ported FAST 90?

MPM IV

iTrader: (3)

We picked up 10 rwhp on my 440 when we put the 102 on with the 90mm TB. We may get a little more with the 102mm TB but who knows. I'll post up in a couple of weeks when it's done.

Pro Mouse

iTrader: (15)

Cool Please do My current 90 is Not Ported I gained 20 rwhp right out of the Box vs the LS6 intake this was on my H/C 346. Now i am a stroker and I feel I could use the extra breathing...Thanks

Titanws6

iTrader: (35)

From what I've read, you should see some gains. The 102 repsonds better to larger cubes, if you gained 20 from an ls6 to a 90, then another 15-20 from a 90 to a 102 seems possible. Plus you could sell your 90/90 to make it worth it.

odarabla

iTrader: (1)

I would have thought the same thing but that doesn't seem to be the case. Seems people are only gaining a few hp form the fast 90mm to the fast 102mm. I do agree with you though. Isn't the opening of the LS6 intake a 78mm? But they are totaly different designs to.

MonmouthCtyLS7

iTrader: (6)

Im sure you'll see something w/ the big cubes...selling your 90 should offset the cost nicely and you can run the same TB.

Pro Mouse

iTrader: (15)

Yeah what is the going rate for a used 90MM Fast intake and TPIS 90 MM TB?

bww3588

iTrader: (49)

the intakes themselves are nearly identical. the only difference is the TB opening.

switching the intake alone, and sticking with the same 90mm tb is pointless. you may see a few hp just from the throat of the TB opening being bigger, but the runners and such are nearly identical.

Pro Mouse

iTrader: (15)

If I was going to switch my intake I would do the TB with it

03 BUSA

iTrader: (25)

FYI, I opened up my 92 to a 96 with a 96 throttle body and seen a ZERO gain in anything on the dyno. If you already have a fast I really do not see a hp/dollar gain. Just makes no sense IMO.

bww3588

iTrader: (49)

i figured...i was just replying to the above post of switching the intake and not the TB.

SweetS10V8

iTrader: (4)

You must not have actually looked at these have you??

Ive had both styles, and naturally I have to take them apart to see whats inside and they are 100% different. The old LSX was a three piece design. The new LSXR 102mm has individual runners, its totally different.

lemons12

iTrader: (71)

Was about to say same thing..

I went with the 102/102 setup.. No reason not to for the price. You can get a brand new 102 intake for 800 shipped.. Or you can get a ported one for 920 shipped. Kind of hard to beat that if you ask me.

garygnu

don't you need different fuel rails for a 102 intake?

lemons12

iTrader: (71)

The new rails that fit the 102 are only 190$.. You need new rails anyway. Stock rails are hideous.