View Single Post
Old 08-08-2013, 11:08 AM   #22
40's rock
Member
 
40's rock's Avatar
 
Join Date: Aug 2012
Location: Dallas
Posts: 89
Default

Well......live and learn.

Seems my 9 spd is a direct drive and I have 3:55 rearend. If we drop down to one step on rear gears, only drop 200 or so RPMs and not pu much top end.

So changing the trans to a 9 spd with overdrive...chart shows 1500 RPM @ 66mph....1800 rpm @ 80 mph

Economics don't make sense, never recoup costs vs fuel consumption, but much better on the engine long term than the current 2100 rpm @ 71 mph (and I can actually run the posted speed limit on open highway.)
Additional benefit will be everything from the clutch back will be inspected, PM'd and in perfect order.
40's rock is offline   Reply With Quote