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RIP Jason
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Discussion Starter #1
What RPM will I be turning on my truck with 4.88 and 31s doing 70? I'm scared to find out :insane:
 

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Fresno State Bulldog
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zubyc said:
What RPM will I be turning on my truck with 4.88 and 31s doing 70? I'm scared to find out :insane:
According to my calculations....you will be turning 3838 RPMs going 65 in 3rd gear....so in overdrive at 65 you'll be doing 2686 RPMS....check out this page...Gear Ratio/Tire Size Chart
 

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Lifted96Chevy said:
According to my calculations....you will be turning 3838 RPMs going 65 in 3rd gear....so in overdrive at 65 you'll be doing 2686 RPMS....check out this page...Gear Ratio/Tire Size Chart

That doesn't sound too bad really. I went from Houston to Iowa pulling a trailer at 70mph all the way, 3rd gear, and I was around 3000 rpm the whole way, didn't have a problem. Gas mileage sucked (10 mpg)...but thats going to be expected with a trailer and those RPMs.
 

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zubyc said:
lol i guess you didn't read my post
Oh i read it all right, i just wanted to tell u what my truck runs with stock gearing and tires for comparison to what Lifted96chevy said. only about 700 rpms more then factory. srry
 

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RIP Jason
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Discussion Starter #7
Well my truck used to be stock too...I really need to get my lift done soon because I'm going to be wasting so much gas
 
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