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Engine Revs x Car speed #205106 01/26/09 07:33 PM 01/26/09 07:33 PM
Joined: Aug 2005 Posts: 637 Sao Paulo, Brazil dart_73_br OP mopar
dart_73_br OP mopar Joined: Aug 2005 Posts: 637 Sao Paulo, Brazil	Hi guys, does anybody knows the formula to calculate the car speed based on revs, gears, tires.... so on... BR, 1973 Brasilian Dart E100, boosted 390"

Re: Engine Revs x Car speed [Re: dart_73_br] #205107 01/26/09 08:52 PM 01/26/09 08:52 PM
Joined: Jan 2003 Posts: 6,591 Canton, Ohio S Sport440 master
Sport440 master S Joined: Jan 2003 Posts: 6,591 Canton, Ohio	Yeah , heres my favorate. MPH x Gear x 336^ Tire Diameter = RPM With the above formula you can pick Any Gear,MPH TD to get a RPM from the change. Plus its Easy to remember off the top of your head. The Key number is 336, after that its just gear TD and MP = RPM mike

Re: Engine Revs x Car speed [Re: Sport440] #205108 01/26/09 10:12 PM 01/26/09 10:12 PM
Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere S S/ST 3040 master
S/ST 3040 master S Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere	Don't forget to divide final RPM by 95-96% for converter slippage. Here's a neat one to plug numbers into.......... Visual Speed/RPM Calculator

Re: Engine Revs x Car speed [Re: S/ST 3040] #205109 01/26/09 11:15 PM 01/26/09 11:15 PM
Joined: Jan 2003 Posts: 6,591 Canton, Ohio S Sport440 master
Sport440 master S Joined: Jan 2003 Posts: 6,591 Canton, Ohio	Yep, dont forget about vert slip. And Vic I remember that virtual calc, you gave us that link once before. I enjoyed it. It even came to mind when I first posted. mike

Re: Engine Revs x Car speed [Re: Sport440] #205110 01/26/09 11:27 PM 01/26/09 11:27 PM
Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere S S/ST 3040 master
S/ST 3040 master S Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere	I think that was done by a member here but, don't remember who it was.

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