RPM's when towing uphill?
have a 2012 dodge ram 1500 with a Hemi 5.7 engine crew cab 2x4. just got a small 21 ft TT weighing loaded 3900 lbs. going up a 6 or 7 % grade in Nv. was doing 55 to 60 MPH and the RPM's were betwe...
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The Available RPM is the figure that kinda makes me chuckle some....nobody ever talks about it though.
My dads 03 Cummins has a 3200 RPM redline
My old 99 V10 had a 5800 rpm redline IIRC
My Daddy consistently had to run his Cummins at around 2600-3000 RPM over some of the hills around here (Monteagle, Hwy 111 from Dunlap to Soddy Daisy. This is from 81-93% of the available RPM for the Cummins
My truck did these pulls at about 4500-5000 rpm... this is 77-86% of the available RPM for the motor .
Seems strange to me that people with diesels are content to run them at 81-93% of the available RPM all day long... since its numerically lower RPM (but as high or higher % wise) but a Gasser running 77-86% of the available RPM is disturbing to them.
The Ford 3.7 V6 with a 7,000 RPM shift point... that should be a FUN test to do a TT pull up a hill with. I wonder what RPM % it has to use. LOL
Thanks!
Jeremiah
My dads 03 Cummins has a 3200 RPM redline
My old 99 V10 had a 5800 rpm redline IIRC
My Daddy consistently had to run his Cummins at around 2600-3000 RPM over some of the hills around here (Monteagle, Hwy 111 from Dunlap to Soddy Daisy. This is from 81-93% of the available RPM for the Cummins
My truck did these pulls at about 4500-5000 rpm... this is 77-86% of the available RPM for the motor .
Seems strange to me that people with diesels are content to run them at 81-93% of the available RPM all day long... since its numerically lower RPM (but as high or higher % wise) but a Gasser running 77-86% of the available RPM is disturbing to them.
The Ford 3.7 V6 with a 7,000 RPM shift point... that should be a FUN test to do a TT pull up a hill with. I wonder what RPM % it has to use. LOL
Thanks!
Jeremiah
