checking new tach

[cajunman87]

I just did a guage swap to one with a tach, but i don't know what RPMs I should be running at what speeds. At 75 mph I am running at 2,800 rpm, at 65 mph I am running 2,500 rpm. I am just checking whats normal so I know if my tach is working properly.

 

[Rearanger]

What size wheels/tires?

 

[cajunman87]

235/75/15, 3.0 V6, 5 speed manual trans, 3.73 ass end

 

[trxusrngr]

That seems about right to be honest! Correct me if i'm wrong though.

 

[cajunman87]

Yeah I wasn't trying to sound that something was wrong, I just didn't know what these little engines are supposed to turn; I never had a tach in my truck before.