8.1 versus 6.00
Looking at used Chevy/GMC 2500HD's for a TT of about 10,000 GVWR. Would make sure that it has the tow package. We do travel in the Rockies and would like experiences and or opinions on the 8.1 versus...
Forum Discussion
blt2ski wrote:
Manuals no stall outs.
New 6 so has a 4.10-1 first gear. Vs 3.1 in almighty Allison, and 2.48 in POJ4m80/th400 derivatives.
Marty
The lowest 1st gear I could find in current manual transmissions is the 6 speed Ram uses.
It has a 1 st gear ratio of 6.34. You stated the GM 6 speed auto has a 4.1. The 6l80 is actually a 4.027 first gear. Couple that with the 2 to 1 ratio of a torque converter the equalivant 8.05 ratio will out pull the Ram manual 6.34 at standstill.
Thus the manual will stall on a much smaller hill than today's automatics.
Even the Allison will do better at a 6.2 equalivant ratio as there will be no clutches to burn out in the attempt.
