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Came across this [temps] report on TDR:
Thanks for the reply, your 3.73's will make a big difference in 6th versus my 3.55's so yes, you probably can pull 6% with 18k.
I just hauled a 22k gcw load to Showlow from Snowflake, only 28 miles of 55 and 65 mph highway and stayed in 5th for test purposes. I set the cruise at 65 and on a one mile 6% grade I dropped to 62. I think at 2500 rpm I was over my trq. peak. Max EGT's was 1000 * post, at 28 psi boost. The next time I will slow down to 55 or 60 and try the same test.
When I arrived in Showlow I checked the gear box temps. The rear axle was 130*, the transfer case was 120*, the tranny was 150* and the engine oil pan was 160*, water was 190*.
Pulling Bobcat on GN flatbed
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