1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

3rd member/R&P questions

Discussion in '95-older Toyota Truck Tech' started by e rock, Jul 8, 2005.

  1. e rock

    e rock

    Messages:
    1,612
    Likes Received:
    9
    Joined:
    Feb 24, 2004
    Location:
    Monroe, WA
    My buddy has an 82 pickup and is in the process of swapping diffs.

    The one he took out was stock original and had a R&P count of 41/10 for a ratio of 4.1:1

    The one he's planning to put in is from an unknown year, but has a tooth count of 37/9 for a 4.11:1 ratio.

    The ratio difference is basically negligible, but my question is why the difference? Did the gearing change for a particular model year? Is one stronger than the other? Is there any compelling reason *not* to use the 4.11 diff?

    The only info I've been able to find suggests that 7.5" diffs came with 4.10s and 8" diffs came with 4.11s, but I couldn't find any year-specific info. I thought solid axle minitrucks always had 8" diffs??

    Thanks,
    Eric
     
  2. bh4rnnr

    bh4rnnr

    Messages:
    315
    Likes Received:
    1
    Joined:
    Feb 23, 2005
    Location:
    Littleton Colorado
    I dont know if it was the diff size or not. My friend Jason has a set of factory 4.88's all set up out of a Toyota. I have heard they are hard to find... Seems like 4.10's were the most common. Myself, dont know if the difference in gear ranges would work. Sorry.

    -Perry.
     
  3. Cube Dweller

    Cube Dweller Moderator

    Messages:
    1,180
    Likes Received:
    11
    Joined:
    May 22, 2004
    Location:
    22 Acacia Avenue
  4. e rock

    e rock

    Messages:
    1,612
    Likes Received:
    9
    Joined:
    Feb 24, 2004
    Location:
    Monroe, WA
  5. Enigma

    Enigma

    Messages:
    8,204
    Media:
    7
    Albums:
    1
    Likes Received:
    773
    Joined:
    Jan 21, 2005
    Location:
    Pitt Meadows,BC
    I seem to remember that 4.88's came from trucks with the factory automatic tranny..4.10's being manual.
     
  6. KLF

    KLF Frame waxer SILVER Star

    Messages:
    7,039
    Likes Received:
    1,589
    Joined:
    Apr 5, 2003
    Location:
    Southern NH
    In the 89-95 series, it went like this:

    V6, 5-spd, 235 stock tires = 1:4.10
    V6, 5-spd, 31" tires = 1:4.56
    V6, AT, 31" tires = 1;4.88