Quote:
Originally Posted by RocktimusPryme
I was told it’s from a 93 truck behind a 350, there is a tag on it that says “91”
Will the HD Shift kit be enough even if it only has the 16 sprag direct drum? Or is that a required update
I believe it has the early harness. I have pictures but the forum has been finicky and keeps timing out when I try to add attachments.
One would think a 30 plus year old trans was likely rebuilt at least once, and the TC has a sticker on it that doesn’t look that old. But if it had been rebuilt I would have thought it would have the new harness.
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I'm not an expert on these. But I believe that you can not put a late sprag on an early drum. You would have to change the complete drum itself.
That said I don't believe at the power level we are talking about here that the early sprag is an issue from a power holding standpoint. What I've read is that the sprag's issues come into play with higher RPM's not necessary power. When I say higher RPM's that appears to be the case above about 6500 rpm. The drum is very heavy and at those RPM's the sprag simply can't handle the shock of immediately stopping the drum.
If you're making less than 700 ft lbs of torque and you're not spinning your engine past 6500 rpm, I wouldn't worry about the drum and sprag.