Just curious to know.. What's everyone's crawl ratios?

[hole]

Started off all stock drivetrain (4x2.62x2.73=28.6 and that sucked off road, way to fast for me. Now, after some modifications (5x4x2.73=54.6) things are getting better. Still running 2.73's now sucks loaded down on road, but I'm saving up to change that as well and should be around 80 when I'm done.

 

[Peanut Butter]

My crawl ratio is not very good on paper - 4.56 r&p x 2.62 x 2.48 1st gear = 29.63, but my Transmission is a GM Turbo 400 auto behind a 401 v8, and it creeps up stuff pretty well with very little drama on 35x12.50's because of the "torque multiplying", or slippage or whatever you want to call it effect of the torque convertor. It basically behaves like a manual Transmission rig with about a 50/60:1 ratio. Just point it up the hill, bring the revs up to about 12-1500 and it goes right over stuff, no fuss. My carb is a Sean Murphy Q-jet and it will run smoothly at pretty stupid angles, and this rig is super easy to drive compared to a manual, its kinda like cheating.

I think this is where everyone chimes in with "Real men drive manual Transmission jeeps" or some such.

Dave

<<Hope you have a good-sized tranny cooler with fan in place.
LG>>

I do have a fairly large Derale Stacked plate style cooler with 2 hi output fans mounted underneath the bed, right in front of the fuel tank. The fans are controlled by a themostatic switch mounted in the Transmission oil pan. Thermo switch is closed @ 180 deg, open @ 165 deg. The fans cycle on and off during the course of operation so I assume they are getting the job done, otherwise would run continuous.

Also have a large aggressive 7 blade 19" fan from an early Cadillac I believe, mounted on a heavy duty fan clutch with a tightly fitted fan shroud for the motor. Highest temp seen on the engine so far is about 210 with a 180 tstat, hot day heavy load. I know 401's run hot so that's why I separated the Transmission cooling and engine cooling. The Transmission seems to build more heat running down the highway at 60 mph than it does crawling up a hill for an hour. Go figure.

Dave

:rock:
Good to hear this-Many folks don't understand that a by-product of an auto-Transmission , is lots of heat. Heat will kill an auto in a very short time.
If you ever feel the want in posting pictures of your set up with the coolers et-all. I would love to see them.
LG

I would really like to see some of those pictures too! What type of adapter did you use for the GM Turbo 400 to the Dana 300 ? I'm going with my stock I6, GM Turbo 400 , QT for now, but would like to see more of your setup. Thanks