1995 ZR1 Transmission Really Stiff...Sometimes - Page 2 - ZR-1 Net Registry Forums

DRM500RUBYZR-1 · 08-10-2022

Quote:

Originally Posted by DRM500RUBYZR-1

Something is amiss.
It should not be anywhere near as difficult as oyu have described.

Two suggestions.

First take it to a shop that will drain and refill the transmission with the correct lubricant. Mobil 1 or Amsoil are considered to be ideal for the ZF trans.

Second, make sure that your clutch fluid is both clean and more importantly full.

Once both of those have been done, if your effort is not greatly reduced then the transmission may have a mechanical issue.

That eliminates the simple easily correctable causes.
Good luck and keep us posted of your progress.

Marty

Check that clutch fluid level.

Marty

Young1 · 08-10-2022

Flush out that forgotten black nasty clutch fluid. Drain and fill trans with this. B1EB5B41-AAC6-41D8-8C7A-DB5C101F192D.jpg
Mine noticibly shifted smoother after removing factory fill at 38k miles.

Dynomite · 08-10-2022

Just for information.......I had a 91' Black Label Rebuilt by ZFdoc for my 95'.
He added a short shifter

It now shifts almost like an automatic

That is not a good comparison but you know what I mean

08-10-2022	#12
Young1 Join Date: Sep 2016 Location: Ocala, FL Posts: 881	Re: 1995 ZR1 Transmission Really Stiff...Sometimes Flush out that forgotten black nasty clutch fluid. Drain and fill trans with this. B1EB5B41-AAC6-41D8-8C7A-DB5C101F192D.jpg Mine noticibly shifted smoother after removing factory fill at 38k miles. __________________ Steve Young 1991 ZR-1 Quasar Blue Metallic/Black #729 Second Owner 1991 ZR-1 Dark Red Metallic/Black #2040 SOLD 1990 ZR-1 Dark Red Metallic/Saddle #1670 SOLD Double your happiness.....complain half as much.

08-10-2022	#13
Dynomite Join Date: Aug 2009 Location: South Dakota/California Posts: 3,790	Re: 1995 ZR1 Transmission Really Stiff...Sometimes Just for information.......I had a 91' Black Label Rebuilt by ZFdoc for my 95'. He added a short shifter It now shifts almost like an automatic That is not a good comparison but you know what I mean __________________ Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 08-10-2022 at 11:29 PM.