got my truck back from having gears put in :)
Champion
Joined: Aug 2009
Posts: 3,015
Likes: 8
From: Western NY,
I know others on the other dodge forum are the ones who told me 2100 rpm at 70 with 35" tires would be 4.56 gears...I dont remeber what its at at 60 but I know the rpms climb slower in od when speeding up ....at 45 im at about 14-1500 rpm.. so...I think 1900 is about right for 60 though cause its about 2000 at 65 for me...
Record Breaker
Joined: Dec 2008
Posts: 2,032
Likes: 1
From: Elk Rapids, MI
ok guys im not trying to hyjack the thread, but how can you tell what gears you have i mean i know mine came out of the factory with 3.55's and i see ya'll talking about ya'lls rpms at certin speeds. Now is that at full throttle or just cruising because i went and test mine out and at 60 my rpms at a hair over 1500 and i have those 33's on there.
This is a good chart to start from, but remember it does not factor in added rolling resistance from bigger/wider/heavier tires, as well as more wind resistance from a lifted truck. I always recommend going one ratio lower for this reason.
http://www.4lo.com/calc/geartable.htm
Champion
Joined: Aug 2009
Posts: 3,015
Likes: 8
From: Western NY,
This is a good chart to start from, but remember it does not factor in added rolling resistance from bigger/wider/heavier tires, as well as more wind resistance from a lifted truck. I always recommend going one ratio lower for this reason.
http://www.4lo.com/calc/geartable.htm
http://www.4lo.com/calc/geartable.htm