[Chevelle-list] ring & pinion

[Mike Holleman]

A 3.55 is a good combination with the 700R4. I turn 2400 R's at 80 MPH and have a real good launch. 
Mike
  ----- Original Message ----- 
  From: Rick Schaefer 
  To: karl at karlcore.com ; The Chevelle Mailing List 
  Sent: Saturday, November 04, 2006 3:10 PM
  Subject: Re: [Chevelle-list] ring & pinion


    Bob
          I'm running 3.31's with a 700.   At highway cruise speed I feel that the motor is on the ragged edge, and I don't have a high performance cam.   I believe that cruise RPM is right at 1700+ .  I'd suggest you go even 1 gear set lower than 3.36.  Either the 3.42 or 3.55 if its available.    It might make a slight difference in cruise MPG but around town I'd bet the 3.42 or 3.55 would do better than what you are gettin with the 2.56.    
      

   
  On 11/4/06, Karl Groves <karl at karlcore.com> wrote: 
    IMO, a 2.56 gear in the rear and a 700R4 is too low.  Even for a daily
    driver, I'd run 3.42 gears with a 700R4. 
    That's gotta feel like it is lugging at 1,400 RPMs.

    Karl Groves
    Master Certified CIW
    http://www.karlgroves.com

    Grayscale Content Management System:
    http://www.grayscalecms.com



    > -----Original Message-----
    > From: Bob Haggard [mailto:skylark1970 at windstream.net]
    > Sent: Saturday, November 04, 2006 7:41 AM 
    > To: Chevelle-List at Chevelles.net
    > Subject: [Chevelle-list] ring & pinion
    >
    > Any bad experiences with Yukon gears and Auburn Posi?  Since
    > I finished my car in June I have been running the stock 2.56
    > rear end with RamJet 350 and 700r4 transmission and at 60 mph
    > in lockup mode it is only turning 1,400 rpm's.  Replacing the
    > 2.56 with 3.36 will increase the rpm's to 1,840 which will
    > make the engine run better.  This car is a highway cruiser
    > that won't see the drag strip anytime soon.  I am averaging
    > 20 mpg and hope this doesn't change much. 
    > Bob Haggard
    >
    >
    >
    >






  -- 
  Rick Schaefer
  72 TPI El Camino




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