I was looking at a dual friction from centerforce but before I shell out the 300 bucks I thought I'd check other places. I'm pretty much looking for a really quick clutch that has a ton of clamping power. My current engine is making 300+ and the stock high miles clutch slips if you are in 3rd or higher *you really gotta be on it to make it slip in third*

Also. I'm already starting a 383 buildup that will make 400+ NA and however much nitrous it takes to hit 500 (depending on my base NA). Anyways I want to run an aluminum flywheel, but I'm not sure about balancing issues. I know 383's are external and 86 up SB are external balanced, but are they the SAME external balance? I'm using the eagle kit that comes already balanced. So who nows of a company that makes these flywheels?

 

The 86-up motors are NOT externally balanced, even though they have a weight that is "external" to the motor. It merely replaces the part of the counterweight that used to be on the flange of earlier model cranks.

In any case, they are not balanced anywhere near the same as a 400.

Some 383 kits for 1-piece rear main seal motors are internally balanced and therefore use the stock flywheel with its "internal" balance weight. I'd recommend that you get one like that. It's worth a couple of extra coins not to have to fool around with a non-stock flywheel and damper.

I don't see anything about your goal that would exceed the CF DF clutch. They'll hold up to motors making alot more power than that. Driver behavior has as much to do with their life as anything.

Other clutches you might want to consider include Spec (Stage 3), Hays, & McLeod.

There's no particular reason to run an aluminum flywheel. I wouldn't run a stock one either, if I intended to abuse it; but there are plenty of relatively lightweight steel ones out there.

 

hmmm. Intresting on the balance issue. So would a 400 flywheel work? Or is the crank smaller diameter like all the other latemodel gen 1 SBC's

 

all 400s have the same bolt pattern on their crank as pre-86 SBC.

 

right, but are there any aftermarket aluminum 383 flywheels that will fit our cars??? Also if anyone knows, are the 383 kits from eagle the smaller diameter (at the flywheel) or are they a 400 style crank that is turned to fit the one piece rear main seal.

Basicly would you have to have a little diameter flywheel for our cars or would the 400 flywheel work? And which one is the right balance? Maybe a question for eagle huh??

 

They probably offer a 383 crank for 1pc and 2 pc blocks. Many crank mfgrs. do, given there are a LOT of 1986-2002 L98, LT1, LT4, Vortec etc. engines out there.

The 400 flywheel works if you want to run a bellhousing that supports it. No third gen bellhousing fits a 168 tooth flywheel because the starter hits.

You need to ask Eagle if they're selling you an 86-up crank, or an 85-down crank. Then you need to know if it's balanced like a 400, or if it's balanced like an 86-up 350, or like an 85-down 350. Then your question will be answered.

 

so how fast is the centerforce DF? I want one that is fully disengaged after you push it like an inch or two.

My supra clutch is so quick that after I've driven my bird I hop in the supra and nearly kill it, A lot grabbier too, but that may be cause my clutch is so shot to crap.

 

No you don't.

To get that, you can screw with pedal ratios and such. But I'd much rather have a good clutch with good modulability than "rapid" engagement.

If you want fast as hell, run 82-83 linkage, and an 84-92 fork and bell. That'll be your hair trigger clutch right there.

 

Have you given any thought to the tranny?

If it's a NWC tranny, your current slipping clutch might be saving it's life. Throwing in a sticky clutch with the power you are talking about and it might go out.

Just a thought. I don't know if you've beefed it up already or not.

 

If you are running any more power than stock don't waste any cash on the t5 world class or not. Third gear or fifth will let go in short order unless you baby it and who wants a fast car that you can't drive fast? Use what you have and invest in a TKO 5 spd or a t56 you will not regret it. If your t5 is sellable then you should be able to do the t56 swap for about a grand. More money than a clutch upgrade but sooner or later ( likely sooner ) the t5 will fail anyway and if you plan on keeping the car you will be most pleased with the six gear and never have to worry about tranny failure again... unless you start making sick amounts of power Just my

 

Actually I have thought of breaking it, and I'm planning on the g-force one, but I'm not sure of drop in compatability, and being able to reuse my clutch if I buy a new one. The g-force trannys are rated at roughly 600HP, so It'll hold up.

I think g-force only build tko's, which i was under the impression that a tko was a t-5??? Can G-force buid the trannys in our cars?

And I Don't want the clutch to be THAT quick, just how my supra is. Pushes about a 1/4" before anything happens and is fully disengaged after another 1 1/4" to 1 3/4"

Like I said though, I'm not to worried I just wondered how much dfferent clutches changed the quickness ratio, and how fast the centerforce was.