Ford Mustang Forum - View Single Post - thinking of switching to 5.0.
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post #58 of (permalink) Old 07-02-2014
Strange Mud
SHELBY GT 350 Member
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Joined: Apr 2011
Location: small town CT
Posts: 5,387
Redline is 7k....I will down shift into 3rd from my two lane blacktop cruising (4th/5th) @ 50-60 without worrying. If I know I intend to pass and the opptunity is ahead I'll be in 4th already just to get rpm's up a bit before. On the hwy you normally shouldn't need the sudden acceleration but you can go into 4th from 6th. Normally you can drop down two gears easily to get your rpms and accel up. What do you have for a ratio now? (No, I ain't re-reading thread to see if I missed it) The only down side to changing it out is a chance for noise so make sure you get a GOOD shop to do it and loss of hwy mpg. Around town unless you start winding out the motor you shouldn't loose mpg since if needed you can be in a higher gear. With the 3.31 I tend to cruise at 2k rpms as there is no acceleration below that point and it will start to lug a bit if you try or go up hills. On the hwy I'm in 6th and drive ahead enough that I rarely need to downshift. I will say I test drove two V6's with the 2.73 and the 1st time I tried accelerating on the hwy in 6th I thought something was wrong with the car when I pushed the gas pedal down and nothing happened. To my ears these engines are not being abused in the higher rpms and they seem happy enough to do it. Yep, mpg will suffer and if you do it all the time it ain't good but keeping the rpms up over 4k when you are out having fun is ok.

2012 V6 traded in for a 2017 VW GTI.
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