I have an 84 2.3L mustang, non turbo. With 4 speed manual. What is the best RPM to shift at? I shift around 3000-3400. Thanks

 

it varies for all cars... best way to do it is keep going, keeping one eye on the road, other on the tach, until you feel the car no longer quickly accelerating or you reach the red line... whichever is first... then you have your ideal shift zone... or you can do what I do and just go... and shift whenever I feel the need to...

 

I usually shift at ride the RPMs too 3000 then shift on normal driving.

 

general rule of thumb... shift at 5500 RPM... obviously varies..but for most domestics it runs tru..

try that out...

oh yeh.. 5500 if your given er... LOL...

 

where you're shifting now is about where I do on my truck, it'll be best for the engine and power to cruise around 2000rpm, that's about the only thing I can think of to add...