[Sandy]

Frank -

What size clutch can you use on the car? If you can use a standard size ford (10.5" as I recall) you can use most anything. I have been running a McLeod single disk (Dual Friction type) and a late 5.0 Mustang style diaphram cover in the 65 Mustang which is running about 7500rpm and about 560hp (Heaver car too). Pedal pressure is not all that bad and has been in the car for 2 years. A friend used the Mcleod Duel disk (Street Twin I think they call it). Had so-so results, it was a bit grabby and he used a very light flywheel so it was a pain to drive, still worth a look if you can fit it in the zf's housing. Also if you want a hard core racing clutch you can go the route of Tilton and Quarter Master. They make a bunch of duel/triple packs but as mentioned they are on/off and the stack height may be too tall for a short depth housing, and they arn't have much use at all on the street and are a bit more tricky to set up.

You might also find someone that can talk more about disk friction materials. Much improvements over the years, in the RCR I am running an simple organic disk with a somewhat stiff cover, motor will run 600hp at 8000rpm. That is with a 930 sized disk. If that get toasted, will likely try one of the Carbon or Kevlars but don't know much about them. Will have to see how that works out...

Lastly you might have some juggling room with your clutch slave/master. You might be able to change the master (smaller) to require a bit less pedal pressure at the expense of a bit more motion. Pedal and rod ratios might also be looked at.

HTH

Sandy