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Re: SkinnyG's '61 Apache
I waited WEEKS for my TH400 direct piston to arrive so I could run 6 clutches.
Did a wack of research, did some measuring, followed someone's advice, and discovered that my late 4L80E bonded direct piston is 0.675" tall. To run 6, I'd can only machine the TH400 piston down to 0.625", but I'd still need to run thinner steels (maybe all .077's instead of .092's, maybe a couple .060's as well) to get the right clearance.
That, then, is the debate: Do I stuff in an extra clutch for 20% more grip at the potential cost of 17% less heat resistance?
I'm thinking it's not worth it. In a 4000lb 2wd 60's pickup with 650rwhp on 8" tires and zero traction control.
5 clutches are well known to handle 1000hp just fine....
Grrr. Over-thinking. Just like buying the cam at the bottom of the page.
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