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Old 11-23-2012, 03:37 AM   #1064
natedog39 OP
Borderline Beefcake
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Joined: May 2009
Location: ravena new york
Oddometer: 6,543
Here's the figures.

With the 8.3 and 3.31 ratio my top speed would be 59 mph.

Brownie box .82 overdrive raises speed to 70.

Not too bad but not worth the effort IMO.

I don't need to do 80 mph but that's the top speed I'm shooting for making cruising at 65 possible without the engine being wound out.

An Allison 3000 series transmission has 6 speeds with both 5th and 6th being OD. The problem is controlling it and $$$$$ to buy one.

I do recall looking at a truck once that had a mechanicaly controlled DT466 and I believe an Allison 3000. I may look into this.

2014 FE 501
2012 990Adv

Team Ghetto does a hot lap of America
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