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
6.6 Oilburner wrote:jrp26789 wrote:
4.10 only have a impact in first gear after that the trans takes care of it by down shifting. If you have 3.73 you could be in third and have the same rpm as a 4.10 in 4th.
4.10s have a mechanical advantage over 3.73 at any given RPM. If anything, 4.10s have less of an impact in first gear with first gear ratio and the converter unlocked.
^^^ This ^^^
Lower geared rear axles (e.g. 4.10) affect more than just 1st gear. It has the effect of pushing all of the transmission gears closer together. With the increased mechanical advantage in each gear you rev (accelerate) faster to the next shift.
The only time a 3.73 will outperform a 4.10 is if the 4.10 is redlined but cannot pull the next higher gear.
