UCABlackChevy

iTrader: (10)

I installed a new slave, pilot bearing, and LS7 clutch/flywheel a month ago.

I get a nasty clunk on 5th and 6th gear upshifts IF I release the clutch quickly. Also get a clunk pushing the clutch in quickly or releasing quickly when rolling in 1st or Reverse in a parking lot. Also get a clunk moving the shifter into first when coming to a stop. The clutch also chatters when coasting in first or reverse.

Any help is appreciated.

TAtoad

iTrader: (22)

i hear a clunk when i let the clutch out quickly, but when i start the vehicle.... i wonder if its due to the same thing

UCABlackChevy

iTrader: (10)

Anyone know if thumps on clutch release are normal?

AChotrod

iTrader: (17)

Not normal, my stocker never clunked, my Street twin grabbed hard but didnt clunk.

ElChiefWS602

iTrader: (1)

I had a clunk when shifting gears as well. I checked everything, mounts, all suspension, all clutch bolts and hardware, pilot bearing, rear, drievshaft, etc.

Well I ordered a Tick MC and I figured I would swap my slave as well. I drop the trans to find that there was play in my input shaft. I am now in the process of rebuilding the whole trans even though it was done previoulsy. It seems that improper preload/endplay is the culprit.

UCABlackChevy

iTrader: (10)

Man, I hope that is not the case. Could I have caused this freeplay reinstalling the trans back on the car? I am NOT dropping the trans again anytime soon, I'd rather risk the **** exploding going down the road than go through that again.

Another tidbit that I haven't mentioned but didn't think it would cause this - I did not bleed the clutch after installing the slave and new clutch. I tried. I stuck the mighty-vac cranked it up to 15in and pumped the pedal but no bubbles came out. Maybe its got air in there causing this?

RevGTO

iTrader: (12)

My M6 car is stock and the tranny and clutch work fine, but it has a clunk on 5th and 6th gear upshifts. The car doesn't jump or anything, and the clunk sounds like its coming from the rear of the car. All driveline and suspension pieces seem tight upon inspection.

ken125

iTrader: (3)

mine did that and i replace the trans mount and it quit. the trans mount did not seem damaged but apparently it was a little loose

Sicko

iTrader: (1)

my money is on a trans mount...

UCABlackChevy

iTrader: (10)

I might have forgot to torque it down reinstalling the trans. I will check it this coming weekend, too lazy to do it today.

UCABlackChevy

iTrader: (10)

Ok, bumping this back up. Was not the trans mount. Here is a better explanation of the problem (will edit the OP).

I get a nasty clunk on 5th and 6th gear upshifts IF I release the clutch quickly. Also get a clunk pushing the clutch in quickly or releasing quickly when rolling in 1st or Reverse in a parking lot. Also get a clunk moving the shifter into first when coming to a stop. The clutch also chatters when coasting in first or reverse.

Any help is appreciated.