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Goldeneagle
12-11-2010, 02:00 PM
Embarrassing to say but I don't know how to figure this out. The rear end in my car has been swapped out, or at least that is what I've been told. Is there an easy way to find out what gear is in it, other than jacking the car up, marking drive shaft and wheel, turning the wheel and counting the revolutions of both?
:dunno:
evil8
12-11-2010, 03:00 PM
no .
Kevin1989
12-11-2010, 03:35 PM
thats not that hard as long as you can count. or get online and look at a chart for mph vs RPM and write down rpm in like 4th gear at 35mph and look it up.
Goldeneagle
12-11-2010, 03:45 PM
thats not that hard as long as you can count. or get online and look at a chart for mph vs RPM and write down rpm in like 4th gear at 35mph and look it up.

Well, see that is another problem. It doesn't have the right size tires either, so I'm kinda stuck with the rotation count.:eek:I was hoping someone had a better way.:o
Kevin1989
12-11-2010, 03:59 PM
it will give you pretty good idea..
Goldeneagle
12-11-2010, 05:03 PM
Ok, thanks guys. I'm going to jack the car up and do the rotation count.:(
marauder
12-11-2010, 05:28 PM
If there is anything I have learned...Microsoft Excel is a powerful tool and somewhere someone has already created a spreadsheet that you can punch in things like tire size, rpm, etc... and it will solve for the unspecified. Let me do a quick search for a spreadsheet and I may post back asking you for some info. (Resident Certified Microsoft Excel Expert)
Goldeneagle
12-11-2010, 05:46 PM
Yeah, Ok.:)
marauder
12-11-2010, 06:09 PM
Welp, yeah...the one factor I'd need is MPH..but the speedo is off....

This may help, if not your method may be the best practice.

http://www.csgnetwork.com/multirpmcalc.html
Goldeneagle
12-11-2010, 06:28 PM
This might work, I'll just keep changing the values till it's right.:bigthumb
dsmawd350
12-11-2010, 06:39 PM
dude just jack it up and spin the fucking tires. are you that lazy
Goldeneagle
12-11-2010, 06:48 PM
yep sure am, when it comes to the shitty weather, I get real lazy.
marauder
12-11-2010, 06:50 PM
^x2 lol
dsmawd350
12-11-2010, 06:51 PM
lol ok then
orangedemon331
12-11-2010, 07:15 PM
dude just jack it up and spin the fucking tires. are you that lazy

LMAO!!! :lol:
87stangbbb
12-11-2010, 07:18 PM
lol....
NO SHOT
12-11-2010, 10:47 PM
Drive down the road beside someone who has a correct speedo.:bigthumb