I used the 78125HD. Available from Summit/Jegs or where ever you prefer to buy speed parts. The 78125 is available as well. The difference according to the tech guy at RAM was beefier o-rings. As both Mcleod's leaked, I was all for beefier O rings. I am running a GM crate 383, and TKO 600. a pretty mild combo in this crowd and it works perfectly. It is a little tricky to install as one must install and keep it inside the bellhousing, stab the tranny thru the RB.
My experience with Mcleods was a joke. The second install, the bearing squealed like crazy. When I called tech support, he said "it will wear in." Sure. that makes total sense. Every bearing squeals before it wears in.... And yes my math was done correctly. I even bought another pressure plate so the air gap was dead on.
Just Google 'mcleod release bearing leaking.' and start reading...
Darren
Last edited by Fluid Power; 07-08-2011 at 05:29 AM.
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