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RPM id od and gas mileage

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Old 02-13-2010, 07:01 AM
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Default RPM id od and gas mileage

Hi all, i just bought my first ram and had a couple of questions. First is at 70 mph i am turning 2400 rpm's. Is that right? I have 3.92 gears, i checked. Also i don't think i'm going to be happy to find out how many mpg i am getting. I love the truck don't get me wrong, it's just that i guess i expected to see more mph with the v6. I realize it is a heavy truck with the quad cab. I have already upgraded the tires and rims with 33x12.50 17 dick cepek fun country II's. I also just ordered a leveling kit from performance lifts. Anyway i was just wondering mainly if my rpm's sound right to you guys at 70mph. Thanks, Aaron
 
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Old 02-13-2010, 11:46 AM
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Auto or manual tranny, and you already have the 33's on there? W/ the getrag 6 speed the overdrive ratio is 0.79 and couple that w/ 3.92's and factory 30.5 tires and you'd be turning 2400 rpm. Once you put the 33's on the rpm will drop about 200 at 70 mph.
 

Last edited by chambers; 02-13-2010 at 11:57 AM.



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