What RPM should I be at 65 MPH and 70 MPM

[V6Turbo]

Hi Folks,

Just making sure my tranny is not messing up...but it seems my RPM is high on the Freeway. I get the following:

65 MPH=2000 RPM
70 MPH=2800 RPM

Are these normal? I'm thinking it is normal and just not used to my other cards which have plenty of overdrive.

Thx Virgil

 

[pacecarta]

the rpm at 65 you state was 2000 and thats about right for 2004r in OD locked with a 26" tire and 3.42 gears

but at 70 you claim 2800 makes no sense unless you were downshifted to drive (1:1)
2800 rpm locked up in OD (.67) on a 26" (stock) tire with 3.42gears you should be at 95mph

what are you using for a tach and what do you have for trans/wheel/ rear /converter

 

[Nascar83Fan]

I get 2,000 rpm at 60-65 mph, depends on if uphill level or downhill angle of road i am driving on. I get 2100-2200 rpm when i'm at 70-75mph. 3.42 rear gear, factory gear ratio's and still have a lockup converter. maybe you don't have a lockup converter, shouldn't be turning almost 3k rpm in 4th at 70ish mph in 4th gear cruising along.


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[V6Turbo]

Tried it again on the freeway.

I now get about 2200 RPM almost flat on the freeway at 75 MPH. I was originally using my VDO analog tach and now checked using my scanmaster. They both seemed to be correlated with each other. I guess I must have read it incorrectly during the up and down drive in the morning.

Questions:
1. How will I know if I have a lock up converter?
2. What RPM should I be at 85 MPH...assuming relatively flat driving condition.

Thanks in advance.

 

[pacecarta]

My vdo is not accurate in my 87x's Avc dash..reads high almost 1100 now and then

 

[GNRick]

Regarding question number 1, at hwy speed with foot on gas, tap the brake with your left foot just a smidgeon. This will unlock the converter and your rpm's will increase a hundred or two. Then the rpm's will go back to where they were when the converter locks again. Can't help you with question 2 off the top of my head.

 

[Nascar83Fan]

I believe i was hitting 85mph around 2400-2700 rpm range it might of been between 2350 and 2650ish honestly, i have 225 55zr16 tires mounted on 16x8 gta rims all the way around. The next time i get a chance to go 85mph crusing, i'll see what the scanmaster showed for rpm's at that speed.


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[V6Turbo]

Thanks Folks...

Based on the info the board members have provided, My GN's RPM vs Speed seems normal.

Thanks Again!!