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Old 05-10-2014, 09:11 PM   #14
1972K20
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Join Date: Nov 2010
Location: Alabama
Posts: 739
Re: Best auto trans for Cummins?

Quote:
Originally Posted by clinebarger View Post
Ford 5R110, I have a few customers running around at 500 hp with NO mods other than a good torque converter.

Allison 1000 6 speed, They do very well at 350/650.

47RE/48RE...Last a long time at stock power levels, The easiest & most cost effective solution.

4L80E's are not suitable for diesel applications, Even behind 6.5L's they seem to fail often, The Duramax in fullsize vans.....Though detuned still tears them up.
With the 6.5/4L80E combo in stock form the 4L80E's still failed? I didn't think the 6.5 had enough torque.

The Allison's are too costly for me to consider, but that would be really cool though. Plus, they rob more power than most tranny's from what I've heard.

Last edited by 1972K20; 05-14-2014 at 02:00 PM.
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