If my memory is correct Holden had an optional 6 cyl heavy duty clutch for the red six usually called a 1 tonner clutch as they were fitted to the Holden 6 one tonners?
Also if my memory is correct, the difference was the diaphragm in the pressure plate was a tad thicker?
Correctish so far?
I have just received a clutch listed as WB 1 tonner that I want to put in the LJ but the box is marked VH-VK Commodore standard.
The question is, did they drop the heavier diaphragm when the went to the bigger diameter clutch?