The difference between a Mark 5 and a Mark 9 5-speed. How can you tell, what is the better box, etc.
Ya, I know..Tom, you have one! I know but I never figured out the differences. Anybody have the info?
part of the concern that I have is that I have gone "backwards" and installed a 12A instead of the 13B (don't worry, I'm not worried about legality. And the 12A is peri-ported,dry sumped etc. About 280 to 300 HP, from Drummond.
I guess I am worried about whether the existing gearbox will last. Hewland says the JFR is only good for 240 ft-lbs....how much is a mark 5 or Mark 9?
Thanks in advance.