Re: Got a 6.2 diseasal... should I put a 700r4 or a Turbo400 behind it?
Quote:
Originally Posted by Firebirdjones
I agree completely. The only nice thing I can think of with the 700 is the 3.06 first gear and a 1.62 second, which still makes taking off nice even if you run a 3.08 rear gear. So you can still cruise in 3rd at a reasonable rpm for towing,,,,just as you mentioned.
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Exactly...... I've tried 3.73's and 3.43's but ultimately, 3.08's ended up working the best. It does fine towing my 26ft Airstream trailer in 3rd gear and unloaded, I can go as fast as I want in overdrive and enjoy good fuel economy. Another nice thing about 3.08's is I can tow going up a grade at 50-55 mph in 2nd gear.
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1990 ¾ ton 4x4 Chevy Suburban
-Cummins Diesel - 12 valve - factory rebuilt
-6 speed bullet proof manual transmission - NV5600
-Gear Vendors Overdrive - HX35 Holset Turbo
-NP205 iron transfer case
-3.73 gears -2" Lift
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