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View Poll Results: 3/4 ton Suburban with 6.2 diesel... What transmission?
700R4 (Better fuel economy... but how MUCH better?) 15 62.50%
Turbo400 (Rock Solid) 5 20.83%
Man up and convert to a standard (yipes! please respond with recommended setup)) 4 16.67%
other (please specify) 0 0%
Voters: 24. You may not vote on this poll

 
 
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Old 06-08-2012, 04:32 PM   #1
Firehound
Registered User
 
Join Date: Nov 2011
Location: Graham, WA
Posts: 1
Got a 6.2 diseasal... should I put a 700r4 or a Turbo400 behind it?

Howdy!

I've got a 3/4 ton 85 Burban with a 6.2 in it... It has a turbo 400 behind it with a cracked case. I'm parting out a 1/2 ton 85 burb (with a 350) that has a 700R4 in it...

Here's the quandry: Fuel mileage is a very important consideration. I know the 700r4 will get better mileage with the OD... BUT I've heard lots of nay-sayers telling me that it is a weak transmission to put behind a diesel. Endurance is also an important factor, I dont wanna be rebuilding my tranny every year...

Usage: This rig will be my DD AND my Search and Rescue Rig. Cruisin and 4x4in... when/if I tow, I'll probably only be towing my 3/4 M101 Army trailer (basically an 8' pickup bed with a tarp-top)

In my quest for fuel mileage, how much difference are we talking anyway? 3-5MPG, I may as well keep the heavy duty Turbo400... 10+mpg... I guess I'll go with the 700r4?

Thanks y'all!
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