427 engine (part 2) - RHS block

[Rich Z]

Actually, those parts are referred to as "flex plates" or "flex disks". I have read that they are made out of titanium.

Here's a quote from Pfadt from a post they made on CorvetteForum about them.

We can't speak to the DSS shaft, but on our drive shaft durability tester we have torture tested our drive shaft for 500,000 cycles of 1350 ftlbs, then took the same shaft and it finally torque yielded at about 4500 ft/lbs. Ours is also specifically designed to use a specially designed flex disk to account for angular discrepencies that would otherwise be accounted for by the factory giubos. These flex disks remain stiff in rotation and give you the performance benefit of a billet coupler, but keep the shaft and bearings happy like the factory giubo.

http://forums.corvetteforum.com/c6-f...n-shaft-2.html

I still haven't heard back from them about the driveshaft length measurements.