c4boom

iTrader: (1)

Car is a 6 speed with 4.30 gears. The car doesn't feel like it's falling on its face are losing anything before at the limiter it's actually feels like it's just geting into the swing of things. I haven't dinah'll the car in a really long time maybe I should go through it perfect my wide open throttle tune with the wide band check valve Springs do a tune up into a couple pulls.

00pooterSS

iTrader: (40)

Do you have a dyno graph of it? that'll tell you where it starts to nose over

And what intake manifold is on it?

SLP IROC-Z

iTrader: (14)

hes got a stock ls6 intake on it

LilJayV10

iTrader: (39)

I would want to know where it peaks at before I started asking how high I can spin it....

But I'm weird like that...

SLP IROC-Z

iTrader: (14)

i think hes asking because of what he might be planning to do to it.

00pooterSS

iTrader: (40)

Based on the info I think it'll do just fine spinning to 7k, don't think this one will see a lot above that.
I'm always a little more concerned with where it hits the next gear than how high it can spin, but I understand asking about it and planning it out too.
I don't own a t56 car and my f body was an auto, so I'm not real up on the rpm drop per gear change.
But Id bet shifting right around 7 is going to be best, prob won't do much for the et taking it higher. May even find it wants it lower with that setup. only testing will tell

And besides all that, most peoples valve train isn't really setup to do well above 7k anyway.

LilJayV10

iTrader: (39)

That makes sense.

c4boom

iTrader: (1)

It's been a long time and about 50k since the car was last dynoed. And the run was cut short . I have been looking at intakes for the last 6 months. . Looking for some thing that has a balance between high rpm power and still keeps the resonator property's of a good desine. The fast 102 starts fighting the system above 6800 rpm.

00pooterSS

iTrader: (40)

Don't look too much into resonance. It's a bunny trail that will lead you to having more questions than answers and cause you do end up doing nothing because of the confusion.

Fast intakes are excellent from idle to up to around 7k (and from what you posted that's the rev range you are using)

You want an intake that does well over 7k? You can get one, but it'll be **** down low up to around 5k. Keep that in mind. They all have a range they work in, none of them cover idle to 10k

Also, FAST has short, mid, and long runner length runners, you can swap them out for your intended rpm usage if you plan on revving higher.

If you don't have a built bottom end, and bad *** valve train, you don't need an intake made for working well above 7k, it's not where you're going to be running the car. If you are planning on doing a high rpm build, then I get it, but if you were you wouldn't be asking how high you can rev a stock bottom end lol.

SLP IROC-Z

iTrader: (14)

I thought FAST only sold different length runners for the ls3 and ls7 manifolds?

00pooterSS

iTrader: (40)

Damn I may need to brush up on that.

I though it was all the 102's because even cathedral 102's have removable individual ports. I have had a cathedral 102 apart before, so I assumed they made the ports for them since they are removable.

SLP IROC-Z

iTrader: (14)

No worries, just got my hopes up. it would be nice if they did

00pooterSS

iTrader: (40)

In this instance I'm not sure it matters because the fast will do what he needs. If not go with the MSD for a little more upper end focus (from what I've read anyway). If you want real true upper rpm only then there's the intakes like the sniper

00pooterSS

iTrader: (40)

Gotcha, sorry broseph

But damn why would they not make them for cathedrals.. maybe they will if they don't now. Only makes sense since they are individual removable runners.

SLP IROC-Z

iTrader: (14)

The ported MSD looks good beyond 6000rpm til 7500 but under 6k it loses a bit. If I was to run one id have to swap to 4.56 to make up for the torque loss and to take advantage of the extra top end.

Bob570

I was concerned about this as well with my 2000, I've decided to spin to 7000. We'll see how it goes.

HioSSilver

iTrader: (8)

You can run the old ls1 to 7500 like it's the job it was meant to have.

I revved my 2002 ls6 to 7300.

HioSSilver

iTrader: (8)

Darth did a back to back with a fast 102 annd msd. He ended up liking the msd better do to a smoother curve.....and better top end.

SLP IROC-Z

iTrader: (14)

but wasnt that on a 416 though?

HioSSilver

iTrader: (8)

No it was on his h/c sbe ls1.....that got revved to 7600


There ya go. Found his dyno.