DanS

iTrader: (3)

Need to pull the trigger on an intake, and I'm having a hard time deciding between these two. The install complications of the 102 concern me, but I also don't want to leave hp on the table.

I have not seen many dyno comparisons between the two. How much hp difference does everyone think there would be?

(This would be going in a 98 Z28 - stock displacement, big cam and trick flow 220 heads.)

HCI2000SS

iTrader: (2)

Saw a back to back comparison one time on the same vehicle. I beleive the 102 was like 5 hp more

Rise of the Phoenix

iTrader: (27)

There are several back to back dyno sessions on here. Latest one I saw the fuy gained nearly 15rwhp.

high n dry

iTrader: (18)

Go fast 92...the 102 has fitment issues... not worth the extra bullshit involved unless u have over 400cid motor

dr_whigham

iTrader: (49)

I ran a 92 and was more than happy with it. Yeah, you leave a "little" on the table, but factoring in the injector / rail cost and all, the HP/$ just isn't there.

If anything, go with the MSD. I'm forever done with FAST

unit

It really depends on what you want to do with the car. If this is a street machine, I'd say the FAST 92 is the one to use. Fewer installation problems and you can use your existing fuel rails and injectors. If you're going all out for racing, then the FAST 102 might be a better choice.

SoFla01SSLookinstok

This test showed 7hp & 5lb/ft on a 402.

http://onthedyno.com/GM-LS-motor/art...92-vs-102-402/

blk00ss

iTrader: (66)

I've yet to see a cathedral msd outperform a fast 102. And they're even more of a nightmare to install in a 4th gen than a fast. Not to mention all the problems with the injector bosses and **** with the the msd.


My fast 102 was worth 16hp over 92. But it was a vengeance ported one and also on quite a bit larger engine than stock.

HCI2000SS

iTrader: (2)

I think Vengeance did a comparison a while back and there was a 7 hp difference

dr_whigham

iTrader: (49)

Dude, if you're talking about what's in your sig.... your engine is bigger than even what's in my 2009 Z06

Yeah, I'd imagine you'd pick up a lot more, lol.

I wouldn't run one stock, but a Mamofied MSD is DESTROYING, I'm talking like a barn-burner, Mamofied FAST. Yeah they need a bit of tweaking, but they perform. Moot point though. You couldn't pay me to run a cathedral head again.

Point I'm making is for ease of install and easy on the pocket, run a fast 92 with the larger injector of your choice, be it red tops or the 42# White Bosch 3's

blk00ss

iTrader: (66)

Regardless of your choice of head, the OP is talking about cathedral heads. So again, I would like to see where a msd is "destroying" fast intakes.

dr_whigham

iTrader: (49)

Agreed. Hence why I said for ease of install.... Go with the 92.

I'd have to dig, but Tony himself has talked about it.

SoFla01SSLookinstok

He also told me that about the MSD. He said he will compare it to a ported FAST 102 in the next few weeks. I hope to see a thread on it.

blk00ss

iTrader: (66)

Was he speaking of cathedral heads? I've just always heard the msd was better on the ls7 heads but not the cathedral. I would had went msd if it was worth more power over the fast 102. Just never seen any dyno or track numbers to back it up.

SoFla01SSLookinstok

He didn't state what motor, or heads, would be used for the compare. I didn't ask either. Maybe he'll see this & chime in with some detail.

01ssreda4

iTrader: (96)

Funny you get those cute dyno numbers and sometimes cars run slower with the 102. Its really more about combo. I personally chose the 92.

SoFla01SSLookinstok

Very true.

To the op, I think you'll be just fine with the 92. Could you see more power with the 102, yes. To me not enough to cover the install differences. I'm still happy with my 92 as well on my 383. I do want to "fix" it up a little.

Just a little history/info about the FAST manifold. The first Fast intake up to the 92 used the original design, which was by Wilson Manifolds. Hence the stamp on the intake. The 102 has a RHS stamp on it. I've always wondered if they just took the design by Wilson & put a bunch of little change/updates & called it their own? Or is it completely redesigned?

blk00ss

iTrader: (66)

What I was afraid of. But I picked up 2 tenths and 2.5mph.

DanS

iTrader: (3)

Thanks all, for the feedback. I'm going with the 92.

MonmouthCtyLS7

iTrader: (6)

You'll get a few more hp with the 102, for me it wasn't worth the extra cost of what I needed for the 102 on the stock motor.