Which clutch for a high horsepower C5

[sarahlove]

Has anyone replaced a c5 clutch with 615 hp

 

[sarahlove]

If anyone has please let me know what clutch you bought and if you're satisfied

 

[Toms007]

sarahlove, I have moved your posts this new thread, so that it gets the exposure it needs. I trust you will have Happy Holidays.

Welcome to CAC I believe that you will find many knowledgeable and friendly people here to help you with your question about your C5. When you have time, post up some pictures of your ride.

 

[Toms007]

Oh, I'm not a mechanic, but I can't help but think that a clutch from a C6 ZR1 wouldn't hold the power you are talking about.

 

[sarahlove]

Well, I replaced the clutch about two years ago with one that I was told that would be great but turned out to be rubbish, and I haven't been rough or played or racing anyone at all

 

[sarahlove]

My car was built by a jet engine mechanic in Fort Worth Texas and so much stuff was done to this car it's crazy fast I don't play with it very much and never let anyone else drive it

 

[sarahlove]

Well, thanks for all the help

 

[kpic]

Be real careful as past 600 wheel horsepower; the transmission and diff need upgraded also. This is why most stick to roll racing. If you want to drag race at the strip; then you'll need to make a serious investment in the power train. The LS7 or LS6 clutch will handle 600 at the tires. I believe the LS7's flywheel is ~7 pounds heavier which is noticeable

As the C5 power train is balanced as an assembly; what you want to do is have a machine shop zero balance whatever you choose. Then add the existing flywheel weights in the same locations. Pay attention as if you don't you'll have an aggravating or better said annoying vibration. There are a few GM mechanics here at CAC who will guide you better than me.

YMMV, but personally, I don't care for the dual plates due to the death rattle noise.

As my calendar says it is Christmas ; a very Merry Christmas to you and yours.

 

[Hib Halverson]

615hp, eh.

Well...you're looking at a two plate clutch unless you have legs like a weight lifter and can deal with the high clutch effort.

The aforementioned two-plate clutches as used in the 09-12 ZR1 and the 15 Z06 are candidates.

As for aftermarket clutches, all I've ever used is McLeod. I've tried others, such as Fidanza, but I always come back to McLeod. I have their clutches in all four of my seven cars, the others have stock clutches because they don't need anything more or I have yet to change.

McLeod makes an excellent line of dual disc clutches. If I was shopping for one for that 615-horse C5, McLeod is where I'd start and I'd also use a McLeod aluminum flywheel to offset the increased mass of the two plate clutch.

 

[sarahlove]

Thank you for the imfo on the McLeod and the Fidanza ,I had seen those and wondered which one would be a better choice, and yes you are right the clutch that is in the car now is a twin disc. I don't know if the car came with it or if it was one of the upgrades, the car is a Z51 again thank you, hope you have a Marry Christmas

 

[Hib Halverson]

If the car already has a two-plate clutch, unless it has failed, I'd not change anything.

Merry Christmas right back at ya!

 

[kpic]

Tick Performance Adjustable Clutch Master Cylinder Kit for 97-04 Corvette C5 & Z06 - Tick Performance, Inc.

These are really nice.

 

[sarahlove]

Thanks so much, and my clutch has gotten so bad that in any gear if I try pushing the gas just a little the motor leaves Trans and I have to back pedal

 

[kpic]

Before you spend you $$; here is an article which may be of help.

Selecting the Right Clutch for Your C5/C6 Corvette - Chevy Hardcore

 

[kpic]

Has anyone replaced a c5 clutch with 615 hp

As 615 is right stout at the tires; what was done to the engine?

 

[sarahlove]

Well, it started out a 427 it's bord 40 over with bigger valves ,different cam witch I don't like the sound at idling but sounds like a monster when you get on it, turns up really fast, boiler from the engine back.

 

[kpic]

Is it all motor (carburetor, cam, heads etc) or forced induction (turbo or supercharger)? From what you said, it sounds all motor.

Is the engine original or was it added? Do you have a dyno sheet? 615 wheel horsepower is a good bit; but easily (expensively fits better) doable.

Do you know what the rear end ratio is?

Terminology varies greatly so please excuse my dumb questions. My C5 has what is called a supercharger. However, to people who do engineering, it isn't really a supercharger. It is the cold side or compressor similar to a turbocharger's except the shaft and wheel is driven by pulleys and a gear box instead of exhaust gases.

An all motor 427 is quite a monster. https://www.youtube.com/watch?v=Lz_ZKyK8bfU

 

[sarahlove]

Your car looks just like mine from the rear except for the pipes

 

[kpic]

That isn't mine; although I did own a 69 BB Vert.

This is mine:

 

[sarahlove]

Very nice