92 LT1 Clutch
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Joined: Apr 2007
Posts: 59
Likes: 0
From: Port Byron IL
I installed a Centerforce clutch after my engine rebuild a few years ago. I always had a vibration at higher RPM that I could not diagnose until it was too late. Ended up breaking the crankshaft in half, and we have diagnosed it to the clutch being out of balance. From an operation standpoint, the Centerforce works well, just make sure to have it balanced with the flywheel so you do not end up in the same boat I am now.
Instructor
Joined: Dec 2007
Posts: 197
Likes: 1
From: Pennsylvania
I bought a stock replacement kit from autozone with a warranty for cheap. It is a re-boxed valeo unit (OEM). I autocross and beat on it with no problems. I would recommend it if you are staying near stock power levels.
Thread Starter
Racer
Joined: Apr 2001
Posts: 349
Likes: 1
From: Clayton CA
Thanks for the replies. I am old school and this is my first hydraulic clutch repair. The reason for me asking is I have to let the pedal near all out to get engagement. Seems to grip and go with no slipping. Just alot of pedal travel.
daytonaer - Did you replace the flywheel when you did yours?
allbowties - Since the crank broke I am guessing you didn't?
I guess I should check hydraulics and try to bleed the system first.
No power mods planned for this car, just maintaining and maybe brake improvements.
Thanks again.
daytonaer - Did you replace the flywheel when you did yours?
allbowties - Since the crank broke I am guessing you didn't?
I guess I should check hydraulics and try to bleed the system first.
No power mods planned for this car, just maintaining and maybe brake improvements.
Thanks again.
Le Mans Master
Joined: Mar 2001
Posts: 7,999
Likes: 14
From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
Cruise-In III Veteran
Cruise-In IV Veteran
St. Jude Donor '12
Thanks for the replies. I am old school and this is my first hydraulic clutch repair. The reason for me asking is I have to let the pedal near all out to get engagement. Seems to grip and go with no slipping. Just alot of pedal travel.
daytonaer - Did you replace the flywheel when you did yours?
allbowties - Since the crank broke I am guessing you didn't?
I guess I should check hydraulics and try to bleed the system first.
No power mods planned for this car, just maintaining and maybe brake improvements.
Thanks again.
daytonaer - Did you replace the flywheel when you did yours?
allbowties - Since the crank broke I am guessing you didn't?
I guess I should check hydraulics and try to bleed the system first.
No power mods planned for this car, just maintaining and maybe brake improvements.
Thanks again.
I know when I swapped mine for the 383 the original clutch was just starting to slip.
Thread Starter
Racer
Joined: Apr 2001
Posts: 349
Likes: 1
From: Clayton CA
Thats the plan for this weekend, check clutch hydraulics. I replaced the brake fluid with fresh. But reading the manual clutch bleeding is different.
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Thread Starter
Racer
Joined: Apr 2001
Posts: 349
Likes: 1
From: Clayton CA
Thanks Kim. We missed you at the Dyno Day. My stone stock 1990 C4 pulled 355 horses. The guys were saying that Mikes dyno is conservative. But I was happy, 22 year old car with 26k mi. It books at 375. Thats it, it has been on the track and it has a current dyno, back on the mantle.
