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05-20-2019, 02:50 PM
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#1 |
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Registered User
Join Date: Aug 2018
Location: Yukon
Posts: 4
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What is the RPM Revolutions per mile?
Can anyone tell me what the RPM revolutions per mile is on a 1987 700R4 transmission? I am in the process of fixing my speedometer which is off from changing the rear end and didn't know of this and already have taken my tail shaft apart. Not sure if knowing what color my gears are would help but I have a 17 tooth red Drive gear in the tailshaft and an orange Speedo gear.
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05-20-2019, 03:09 PM
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#2 |
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Post Whore
  
Join Date: May 2015
Location: Alabama
Posts: 14,670
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Re: What is the RPM Revolutions per mile?
Rpm per mile?....youd need alot more info to determine that....gear ratio,tire size,engine rpm
Your od ratio is .78...
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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05-20-2019, 04:29 PM
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#3 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,731
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Re: What is the RPM Revolutions per mile?
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05-20-2019, 09:26 PM
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#4 |
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Post Whore
Join Date: May 2015
Location: Alabama
Posts: 14,670
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Re: What is the RPM Revolutions per mile?
That looks like a good site geezer!....I'm gonna have to save this one...
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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05-20-2019, 09:44 PM
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#5 | |
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Registered User
Join Date: May 2015
Location: Montana
Posts: 3,696
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Re: What is the RPM Revolutions per mile?
Quote:
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Current/past Chevy/GMC trucks: 1958 Chevy C-60; 1965 GMC C-50; 1965 Chevy C-10; 1971 Chevy K-10; 1973 Chevy K-20; 1976 GMC C-20; 1977 Chevy C-10 Suburban; 1980 Chevy K-10; 1989 Chevy K1500; 1991 GMC V1500 Suburban; 2016 Chevy K2500 HD Other vehicles: 1988 Jeep XJ; 2011 Toyota 4Runner |
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05-21-2019, 09:49 AM
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#6 |
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Registered User
Join Date: Nov 2017
Location: spokane, wa
Posts: 122
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Re: What is the RPM Revolutions per mile?
If you are wanting to know the rpm of the speedo it is 1000.
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1977 Chevy C10 SB, Turbo 5.3ls, TH400 |
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05-21-2019, 11:49 AM
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#7 |
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Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,226
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Re: What is the RPM Revolutions per mile?
Rev per mile is usually associated with tire size and is a function of rolling radius.
If you have access to the actual tire in real life you can measure it or determine through experimentation. Otherwise you'd need to find the rev/mile info in a chart somewhere. K
__________________
Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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05-22-2019, 10:15 PM
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#8 |
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Senior Member
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,975
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Re: What is the RPM Revolutions per mile?
Depends what you're really asking for..
Tire Revolutions Per Mile = 20168 ÷ tire dia (inches) Speedometer calibration for revolutions per mile = 1000 as mentioned above |
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