[Guest]

Guys, what is the redline on the 4.7? I'm sure its out there somewhere but I'm lazy...and do cold air and exhaust mods have any affect on it?

 

[JST2SIC]

what do you mean by redline? do you mean the engine cutoff?

 

[Guest]

My truck is 5 speed and the tach shows no redline. I'm just looking for where I should be shifting for max power and speed.