Cummins vs PS vs Dmax
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Joined: Sep 2004
Posts: 241
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From: Brighton, CO.
Originally Posted by bluepp
Well you'll never need to wind the cummins anywhere near 4200. With the 48re auto locked in 3rd gear with stock gear ratio of 3.73 the cummins will run 85 mph at 3300 rpm redline. and bring a 15000 lb trailer right along with it. And when you hit the grade you cant pull in third you hit 2nd at 60 mph and never get above 3300 rpm.
But mostly you will cruse at 60-65 with that 15000 lb trailer in overdrive at a nice pocky 18-1900 rpm. Tool over all freeway viodocks and up most grades and never come out of 4th lockup. And you will never need to BOMB up the power. Keep her stock. You'll never need more then 325 hp and 610 torque.
But mostly you will cruse at 60-65 with that 15000 lb trailer in overdrive at a nice pocky 18-1900 rpm. Tool over all freeway viodocks and up most grades and never come out of 4th lockup. And you will never need to BOMB up the power. Keep her stock. You'll never need more then 325 hp and 610 torque.
Simply put lower RPM = less piston speed = longer engine life. Not to mention the long full skirt on the pistons.... great motors
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Joined: Apr 2004
Posts: 71
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From: austin texas
i have a duramax and a cummins both 05s both autos and both 3.73 gears and 2wd. the duramax pulls as good as my dodge up to about 65mph. but after 65mph you can tell the dodge has more pulling power as when you climb a hill the dodge can pull it in overdrive and on that same hill my duramax will have to downshift to pull it
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3rd Gen High Performance and Accessories (5.9L Only)
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May 29, 2007 08:29 PM