V8er, I'm posting for Brent@b2motorsportsllc.com
From Brent: (copy and paste below... he's waiting for his membership to post direct)
That particular clutch package is basically overkill (in application and
price) for what your needs are.
A simple 10.5" diaphragm pressure plate kit would work just fine and they are readily available to handle 450, 550, or 650 hp. I can provide a RAM or McLeod clutch kit that will not need to have any type of exotic friction materials to hold 450-460hp. For just street driving on street tires, an aftermarket diaphragm pressure plate with an organic/organic disc will work perfectly. Keep in mind that the more exotic disc material that's used, the more chance of chatter and poor street manners. With just 450hp, there's no need in taking that kind of chance.
I would also advise against the use of a hydraulic throw out bearing. A conventional throw out bearing and clutch fork is much more reliable, unless you absolutely have no room for a fork. Keep in mind that if anything goes wrong at all with the hydraulic bearing (and at some point, it will), then it will require removal of the transmission and associated hardware.
To answer more of your questions:
1. If your budget allows, you can internally balance. What usually has to happen is that the crankshaft will need heavy metal to balance it.
This requires drilling a hole in the counterweight, then installing a slug of heavy metal and welding it in. Heavy metal (mallory) is very expensive. If you need a lot of metal, it can raise the balancing cost significantly. For a mild street application, there's nothing at all wrong with a 28oz or 50oz imbalance.
2. Yes...As stated above, there are many different flavors of clutch disc material. Organic is the most simplest and is usually what is found in most stock applications. Kevlar, sintered bronze, sintered aluminum, sintered iron, etc, etc, are "stickier" friction materials, made to hold larger amounts of horsepower. However, the risk of bad street manners increases with these materials.
4. Again, see above. There's really no need in such an elaborate clutch setup for a street car.
5. Any performance application deserves a blow proof bellhousing, and there are no flywheel/clutch combos that will guarantee that you will not have an explosion. With only a thin layer of fiberglass between the flywheel and your legs after an explosion, I would not trust my legs to an aluminum or cast iron bellhousing.
"an instant lock-up" is not something you want with a street car, as it's either on/off, with no slippage available. It would make it pretty miserable on the street.
427 S/C, Flame Yellow, B2 Motorsports 427ci Stroker Dart SBF, TKO600, 3.73 Posi, Avon tires and so much more.