Have you read this page thoroughly from Brewer's Transmissions?

http://www.brewersperformance.com/products.asp?cat=105

You did say you had a small block in the car didn't you and now you have a big block, but are using the same clutch linkage Z-bar?

Also, you are running a 700 hp hemi with a stock bellhousing? That's just plain crazy! Have you ever seen a car that had a clutch explode? it does happen.

http://www.youtube.com/watch?v=L9vpcyxvvC8

1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)