Hi guys
the car used in the test was supplied by Rod Leach and Nigel Hulme the Uk Superformance Agents,
go here
http://www.gt40continuation.co.uk/GT...tonacobra.html,
I would like to take this opportunity to thank Rod and Nigel for the use of this great car.
The 402 cu in fuel injected Roush engine was delivering well over 500HP which was more than enough for our purposes, the car was equipped with a rod linkage and 295 Avon rear wheel tires. Installation was a straight forward bolt in replacement of the ZF unit.
Martin took the car to 175 mph at 6000rpm, the gear change was as reported above was slick and positive with a nice range between the gears.
1st 2.533
2nd 1.619
3rd 1.2
4th 0.929
5th 0.742
Final Drive ratios 3.750.
The testing was essentially to test the production crown wheel and pinion which replaced the prototype unit.
We completed several cycles of hard starts, up shifting, down shifting at various speeds and high speed runs down the two mile straight. We completed 45 laps of the 4 mile circuit during the test.
We also had the production steel rear cover which retains the large shaft bearings fitted.
I hope this answers some of your questions
Chris
The ZFQ team.