quote:Originally posted by Joules:
My first question is why?
The ZF is more than capable of handling 700HP and has been used and abused extensively in race cars with high HP (both Pantera and BMW M1) for many years.
I have a Porsche G50/50 in my Ultima, the modifications to get it to reliably handle the 600HP made it a $15,000 investment. It is considered one of the stronger Porsche gearboxes. Then there's the adapter plate, flywheel and clutch arrangement adding more $$.
If I really wanted a gearbox for road use other than a ZF, it would be a choice between the Ricardo (Ford GT) or Graziano.
Julian
That's interesting. We have raced Pantera's with 600-650hp and have found them to be weak in a number of areas. We have broken input shafts, second and third gears plus we have had some crown wheel and pinion separation due to flexing of the alloy housing. So I'm not sure how you are coping with 700hp.
The standard ZF has two overdrive gear ratios which is also not ideal for a race car.
Regards
Coolvet