Transmissions and Drivetrain Need help with your trans? Problems with your axle?

Clutch is slipping. Time for another or just can't handle the hp???

Old 07-21-2003, 05:38 PM
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Car: 91' RS
Engine: Built 355
Transmission: Probuilt 700r4
Clutch is slipping. Time for another or just can't handle the hp???

I picked up a new car over the weekend. It's a 95 Trans Am. The car makes 387 hp at the wheels and 360 or torque at the wheels. The torque peaks at an Ironic 5300 rpm or so.

The car has a t56 with a Centerforce Dual Friction and a B&M ripper. I cannot powershift the car without the clutch slipping. If I wind the car up to 6000 rpm, the clutch slips like a bastard.

It is pretty bad, it even slips from 3rd to 4th. The clutch has approx. 30k on it but was not driven very hard at all. It only went to the dragstrip once, with street tires. Apparently the CFDF can handle 500 horse, this car is making at least 440 at the crank.

What should I do? What Kind of clutch will really hold this kind of power or more? McLeod?????
Old 07-21-2003, 06:02 PM
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the stock clutch should be able to take more then that.
Old 07-21-2003, 08:33 PM
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It depends on how it was driven, i have seen several of my friends attempt to drive my car. I shudder at how they work the clutch and they all have experience with a stick! My 383 is tourqey despite its lopy idle i can roll away from a light with the tires spinning from 750 rpm. There is no need for excessive slipping, but everytime anybody else drives it, its seconds to a burning clutch. There is no real need to powershift a 400HP car with street tires. The best way to preserve a clutch and the rest of your drive train is to shift quickly and smoothly.

Now on the other side of the coin, when i had my pathetic LG4 i went through 3 clutches and one T5 rebuild in 6 years and 50,000 miles. The car was a dog and you needed to slip the clutch and powershift the tranny to get anything out of it.
Old 07-21-2003, 09:16 PM
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Car: 91' RS
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Right...

Originally posted by MrDude_1
the stock clutch should be able to take more then that.
A stock T56 clutch should handle 425lb ft? Are you sure?

I want a clutch that just wants to bite. I just replaced the clutch and trans in my 84' because it was slipping.......just like this one is. When I looked at the clutch disc....it was toast.

As far as depending on the driver blah blah blah.... I drive a car to the limit. My friends want to sit in the passenger seat of thier cars while I drive because they want to see how thier car can really be driven. Never, ever ever can you smell my clutch burning....that's not what I am talking about. This car should have no problem chirping the 3-4 shift, and it slips. 2-3 shift....don't even think about the powershift, it's not gonna happen.

I want a clutch that just bites and won't let go. What is the best? Can it still be street driven daily?
Old 07-22-2003, 06:43 AM
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My preference in clutches has been the RAM diaphram with the marcel style disk. I use the 11" 3,000 lb pressure plate (Jegs # 798-402) with the 310M disk (note that this may not be the exact part #'s for your car).

I've been using their clutches for quite a while & they hold up. Can't go wrong with a McLeod either.

HTH's,

RBob.
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