Forum Discussion
Community Alumni
May 09, 2015AH64ID wrote:PackerBacker wrote:AH64ID wrote:
345hp should do a lot better than 35 up a 6% grade with only 5000lbs behind it.
I agree; with my 2003 hemi 5.7L with a 6-speed auto, I often did 6-8% grades at 50 mph towing an 8,000-lbs 5th wheel.
Just as a note, the new ones like my 2014 have 395-hp and 410-lbs of torque with an 8-speed.
Which Hemi had a 6 Speed in 03? I thought they uses the 545RFE.
Sorry my bad! I meant 5 but must have hit 6. :o; likely thinking of the Allison in my coach.
... Eric
About RV Tips & Tricks
Looking for advice before your next adventure? Look no further.25,174 PostsLatest Activity: Nov 03, 2025