Don,
I'm confused......I have the .485 dimension that the article shows for a 6 disc drum. The drum only had 5 frictions upon disassembly. I am quite sure that it came from GM that way. The donor unit is a virgin 1968 Buick big block application.
Correct me if I'm wrong, I'll need to machine the piston apply surface down to allow space for the extra friction and steel.
This is all for a spare trans for myself. The trans includes a T-brake and fixed line pressure in the neighborhood of 190-200psi. My HP level is somewhere around 750-800. Not a ProMod by any means, but I want the unit to be strong and reliable. So I'm also interested in builder's opinions: I have read through the 12 page post on T-400's and plan on utilizing many of the suggested improvements .
Selection of frictions and steels:
Regular Raybestos or BW frictions and plain steels for the Forward Clutch.....or do I need Alto Reds in the Forward?
Alto Powerpack for the Intermediate (with HD snap ring) Does anybody offer a waved steel for the Intermediate Clutch?
6 Alto frictions, one wave plate and .077 plain steels for the Direct Clutch
What do you recommend for the band?
Center Support Seals:
4L80E solid rings
Case Saver:
Adapt-A Case 34761
or
John Kilgore case saver
Intermediate Sprag retainer/snap ring:
Spot braze (TIG) the stock snap ring to the drum in about 5 places. I pushed the 4L80E spiral retainer off the drum in my primary transmission last year. It made a mess out of the center support and the direct drum. Mike (Blackplague) gave me the idea to TIG braze the stocker in place. It can always be cut loose in a lathe if needed.
Thanks in Advance,
Dave