News:

  • Home
  • Help
  • Chat
  • Login
  • Register

    • « previous next »
    Pages: [1]

    Author Topic: How do I know what rear end I have?  (Read 905 times)

    Offline dfark

    • Jr. Member
    • **
    • Posts: 59
    • Hold on to your lugnuts, time for an overhaul
    How do I know what rear end I have?
    « on: January 27, 2013 - 12:58:45 PM »
    My car is a 318 auto.    How can I tell what rear axle I have and what the ratio is.   I decoded the fender tag but there is nothing about it on there.   All I know is the third member has 10 bolts and the housing measured 3" in diameter.    The tire turns about 1.5 times to every 1 turn of the driveshaft.  What am I doing wrong here?    :dunno:
    Logged
    72 Challenger project
    05 Dodge Cummins 3500


    Offline HP_Cuda

    • Hit the skinny little pedal on the right!
    • Sr. Resident
    • ******
    • Posts: 5268
    • Mopar or No Car!
    Re: How do I know what rear end I have?
    « Reply #1 on: January 27, 2013 - 12:59:51 PM »

    It sounds like you have an 8 3/4 most likely with 2.76 gears as most 318s had.

    Pictures would help though.
     :useless:
    Logged
    1970 Cuda Clone 440 4 speed - sublime green
    1970 Cuda 383 4 speed - yellow - SOLD

    Offline Jamiez

    • Sr. Member
    • ****
    • Posts: 1981
    • Retro
    Re: How do I know what rear end I have?
    « Reply #2 on: January 27, 2013 - 01:04:07 PM »
    Logged

    Offline Super Blue 72

    • Permanent Resident
    • *******
    • Posts: 12711
    • "Big 'n Little" Member since 8/9/05
      • Phil's Super Blue '72
    Re: How do I know what rear end I have?
    « Reply #3 on: January 27, 2013 - 01:11:42 PM »
    Nice link, Jamie!  :thumbsup:
    Logged
    1972 Dodge Challenger Rallye 340, AT, Code TB3=Super Blue, SBD=8/17/1971.  Yes, a Rallye without the fender louvers from the factory because of the body side molding option.

    Pic #2 and 3 of my ARII 1/24 scale model car 

    Phil in New England-Massachusetts  Always thank God for what you have!

    http://www.cardomain.com/ride/456046/1972-dodge-challenger

    Offline dfark

    • Jr. Member
    • **
    • Posts: 59
    • Hold on to your lugnuts, time for an overhaul
    Re: How do I know what rear end I have?
    « Reply #4 on: January 27, 2013 - 02:02:20 PM »
    Great link.  Thank you.  Mine is 8 3/4. .  Cost effective to build this or put the money towards a dana 60? :feedback:
    Logged
    72 Challenger project
    05 Dodge Cummins 3500

    Offline Jamiez

    • Sr. Member
    • ****
    • Posts: 1981
    • Retro
    Re: How do I know what rear end I have?
    « Reply #5 on: January 27, 2013 - 02:15:41 PM »
     I believe brads70 looked at the two options and a new Dana versus a built 8 3/4 came out about the same.
    Logged

    Offline BIGSHCLUNK

    • Sr. Resident
    • ******
    • Posts: 9341
    • Miss NIKKI - were you this hot at 48?
    Re: How do I know what rear end I have?
    « Reply #6 on: January 27, 2013 - 02:27:46 PM »
     :iagree:  But I guess how far do you want to take it? Being 318 an all...  :dunno:
    Logged
    70 Chally R/T Convertible- Yes she's really got a HEMI, no she's not a Charger!
                                                 [o o o o]
                                                      OO
                                                      OO 
                                                  [o o o o]
    https://www.aanddtruckautoparts.com/
    http://www.facebook.com/pages/A-D-Truck-and-Auto-Parts/67427352555?ref=hl

    Offline dfark

    • Jr. Member
    • **
    • Posts: 59
    • Hold on to your lugnuts, time for an overhaul
    Re: How do I know what rear end I have?
    « Reply #7 on: January 27, 2013 - 02:45:38 PM »
    The 318 is gone. It will be a big block 4 spd car.  Sorry i didnt mention that :dupe:
    Logged
    72 Challenger project
    05 Dodge Cummins 3500

    Offline MEK-Dangerfield

    • C-C.com Expert
    • ********
    • Posts: 20946
    • I don't get NO respect! Member since 1/25/2002
    Re: How do I know what rear end I have?
    « Reply #8 on: January 27, 2013 - 03:15:54 PM »
    Well, unless you are going with a 500+ HP engine, the 8 3/4 will serve you well.

    Then again, if you are going to the drag strip often....
    Logged

    Mike

    1970 Challenger - SOLD
    2016 SXT+.  1 of 524 SXT+'s in Plumb-crazy for 2016.

    Offline Skunkworks Challenger

    • Full Member
    • ***
    • Posts: 781
    • Mopars forever!
    Re: How do I know what rear end I have?
    « Reply #9 on: January 27, 2013 - 03:39:34 PM »
    Is your 8 3/4 open or closed?  With that big block you wouldn't  have much traction if it is open.
    Logged
    The Brewmaster

    Offline Chryco Psycho

    • Administrator
    • C-C.com Guru
    • *****
    • Posts: 36620
    • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
    Re: How do I know what rear end I have?
    « Reply #10 on: January 27, 2013 - 03:52:11 PM »
    if only 1 tire is turning & you turn the driveshaft 1.5 turns for a full tir rotation then the ratio doubles so you mayhave a 2.90 gear ratio & you do not have a sure grip .
    Logged

    Challenger - You`ll wish You Hadn`t
    Pages: [1]
    « previous next »