Where should RPMs sit on highway

[92YamahaSHO]

My rpm sits at about 28,000 at 65 is that normal? all other cars i've driven sit at about 2,000

 

[NotSoSlowSHO]

IIRC, at 65 mph, my tach reads just about 2,500 rpms

And at 80mph, it is just about 3,000 rpm

 

[ShadetreeSHOguy]

My rpm sits at about 28,000 at 65 is that normal? all other cars i've driven sit at about 2,000

:ruhroh: WOW, AND YOUR ENGINE IS STILL IN ONE PIECE?! lol, just messing. mine at about 65 is at about 2300 rpms

 

[yamahaSHO]

80 mph is 3,000 rpm in 5th gear.
100 mph is 4,000 rpm in 5th gear.

 

[GEORGE 1992]

I've learned here thaat the Ford Guages aren't too accurate. That being said, these cars do rev a little higher in fifth gear then most American cars. Hope that helps and keep her running.

 

[92YamahaSHO]

sits at 3,000 at 70mph

 

[SASHO91]

wow thats kinda high.
i think that something is up.

 

[Sho_Freak]

for some reason my atx sits right at 2k at 61mph...and about 2400-2500rpm at 71........thats better than one of my friends mtx...........

 

[yamahaSHO]

for some reason my atx sits right at 2k at 61mph...and about 2400-2500rpm at 71........thats better than one of my friends mtx...........

That would be because the are geared totally different. ATX and MTX do not relate.

 

[Sho_Freak]

really...i thought the mtx 5th gear and atx o/d gear were the same ratio........ thanks for the info Jason!

 

[SASHO91]

What is the final in the Atx? and the MTX is like 3.74 right? or 3.77? cant remember..

 

[yamahaSHO]

Directly from the SHO Bible.

 

[Axianator]

That would be because the are geared totally different. ATX and MTX do not relate.

Don't forget about the converter, fokker. Unlocked, the ATX will actually run at a slightly higher RPM in fourth than it's MTX counterpart would in fifth.

 

[yamahaSHO]

Don't forget about the converter, fokker. Unlocked, the ATX will actually run at a slightly higher RPM in fourth than it's MTX counterpart would in fifth.

Indeed

 

[Shoaz]

In fourth gear in an MTX the tach and speedometer needles are always parallel. If you ever lose one you can tell the other this way in fourth.

Oddly enough, my FSVT is the same way, and it has six gears instead of five. Fourth gear and the tach and speedo needles are parallel.

Must be a Ford thang.

 

[AutoSHO]

In 5th in an MTX:

2200 = 60 mph
2600 = 70 mph
3000 = 80 mph

 

[SHOZ123]

I believe the final drive on the ATX is 3.74 also. There is a 3.98 final drive gear and chain from a '96 Windstar tranny that will work as long as you know a good programmer.

Tire diameter = (mph x gear ratio x 336) / Rpm

Gear ratio = (rpm x tire diameter) / Mph x 336

Mph = (rpm x tire diameter) / Gear ratio x 336

Rpm = (mph x gear ratio x 336) / Tire diameter

 

[anarchy04]

In fourth gear in an MTX the tach and speedometer needles are always parallel. If you ever lose one you can tell the other this way in fourth.

Oddly enough, my FSVT is the same way, and it has six gears instead of five. Fourth gear and the tach and speedo needles are parallel.

Must be a Ford thang.

That is because like alot of 6 speeds that I've seen they have a fifth that is .74 OD and sixth that is .67 OD or something like that, two overdrives.

 

[SHOZ123]

That's nothing new.... My '91 Festiva has two overdrive ratios.