What rpm change

[logan2]

What is the aprox rpm change at say 70 mph with the 410. I am a Newbe, 2004 MM with every option including sunroof, 10,000 on it. First up grades, 410 ,MMC drive shaft, Diablosport tune, Kocks Headers. Then I shell out to charge it!:help: I grew up with 70,s muscle cars:help: This a great site I have learned alot.

[Wires]

Multiply by 4.10/3.55, or 1.155.

That is, when turning 2000 RPM with 3.55s, you'd turn 2000*1.155 or 2309.

I've got an excell spreadsheet that shows the speed per RPM for 3.55, 4.10, 4.30 and 4.56 gears, PM me if interested.

[MarauderMark]

Welcome logan :welcome:

[jgc61sr2002]

Logan2 - Welcome to the MM site. :D

[wesman]

http://www.averagegeek.com/Evil_Jim/GearCalc.asp

[ROADWARRIORSVT]

Thanks for the above link! Quite useful! :beer:

[GarageMahal]

What is the aprox rpm change at say 70 mph with the 410. I am a Newbe, 2004 MM with every option including sunroof, 10,000 on it. First up grades, 410 ,MMC drive shaft, Diablosport tune, Kocks Headers. Then I shell out to charge it!:help: I grew up with 70,s muscle cars:help: This a great site I have learned alot.

My real world observation (subject to errors) was a 250-300 RPM increase on the tach at 70.

jta