Rpm to mph,

[Shane4371]

Just curious,in top gear at 4000 rpm what does your speedo indicate.I'm dead on at 65 mph,stock 86 fj1200,

[Pat Conlon]

Here's a set of tables built for the different gearing/tire options we have on our FJ's. Take a look:
http://www.fjowners.com/index.php?topic=669.0

You can see with your stock gearing and stock tire size, you are in the ballpark with your mph vs rpm.

[Shane4371]

Crap my 140 pound girlfriend on the back slowed me down 3 mph!!! She's gotta go.lmao

[roverfj1200]

http://www.gearingcommander.com/

[Arnie]

Crap my 140 pound girlfriend on the back slowed me down 3 mph!!! She's gotta go.lmao

Do you think it was the weight, the aerodynamics, or all those punches to your kidneys causing the slowdown?  :-)
Is her name really, "Crap" ?
Even so, there are supposed to be 'other' benefits.

[movenon]

I might encourage you to check your indicated speed with a GPS.  Don't be surprised if your 10mph slower than the GPS speed.
George