B-61 MACK HELP

Posted by steve21757 on August 22, 2009 at 18:27:29 from (75.23.47.155):

I am going to install a new rearend with air bag suspension on my B-61 mack.I have a 9 speed overdrive duplex tranny.Does anyone know the formula for figuring out your speed if you know your gear ratio of your trans,ratio of your rearend, and your rpm.I'm trying to decide what ratio to put in the truck to comfortly run 60 to 65 mph preferably 65 with aload of nomore than 25000 lbs on my gooseneck.Your help is greatly needed. THANKS STEVE. P.S i am leaning towards 4.11?

Replies:

• Re: B-61 MACK HELP steve21757 06:42:45 08/23/09 (1)
  • Re: B-61 MACK HELP russ springerr 05:33:07 08/25/09 (0)
• Re: B-61 MACK HELP russ springerr 05:20:50 08/23/09 (0)
• Re: B-61 MACK HELP russ springerr 05:20:41 08/23/09 (0)

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