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  #1  
Old 07-05-2006, 03:34 PM
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bikernut bikernut is offline
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Question best RPM

can anyone tell me what the sweet spot is for my 2005 Chevy 3500, Duramax engine, 4X4 Dually Crew Cab, long bed with auto trans and 3.73 gears. I know the sweet spot to run my 2003 Harley is 53 mph for the best fuel economy and all around performance, not saying I run her there but that is the best spot for the bike if'n I want to get the best mileage for my $. I was just wondering if anyone new where the best spot for my truck is in regular mode and also in tow/haul mode, there must be a certain RPM for the best fuel economy empty and towing my 9000# TT. If anyone has this info I would appreciate if they were to pass it on to me so I can be a educated consumer. Thanks
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3500 Dually Member # 252 and Damn proud of it
2016 GMC Denali Dually Duramax w/Automatic
6X6 (rear tires are dual) ..
enough power to pull the old guy
from the P !!ss Pot
2007 KZ New Vision 41kgx2 Toy Hauler
2 Harleys (2015 FLHTCUTG and 1995 FLTCU)
1987 Trans Am GTA (with only 19,783 mile)
1992 Chevy S-10 4 dr, 4x4 Blazer
03 GMC 3500 Dually
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Old 07-07-2006, 07:32 PM
wrparks wrparks is offline
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Re: best RPM

Not sure with that truck really, but most GM trucks get best MPG around 1400 rpm or so. Normally, ~60mpg in high gear.
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Old 07-07-2006, 07:33 PM
wrparks wrparks is offline
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Re: best RPM

oops, that's a diesel, ignore my post then lol
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