Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

2500 hd rear end

Discussion in 'The Garage' started by 69K5, Dec 2, 2005.

  1. 69K5

    69K5 1/2 ton status

    Joined:
    Nov 10, 2001
    Posts:
    1,544
    Likes Received:
    0
    Location:
    Monroe, LA
    I found a rear end out of a 2003 chevy 2500 hd diesel at the u pull it. they want 170 for it. should i get it for my 69 blazer? anybody know spring perch widths, ratios, rim difference?, ect ect . its an 8 lug version. My front ends are 3.73 and 4.56 so i hope its one of those.

    thanks for the suggestions

    69k5
     
  2. 69K5

    69K5 1/2 ton status

    Joined:
    Nov 10, 2001
    Posts:
    1,544
    Likes Received:
    0
    Location:
    Monroe, LA
    they also had a 14ff in a truck and something else in a crew cab. both for $70. it was a dod truck and had massive drums on it. maybe 14 inch drums. it said 3+3 on the side but it didnt look like a dually rear to me. i wanted to say d70 but i could not find any numbers on it that said D anything. how do I know what it is?
    oh yeah drum turns over 1 complete time to 2 full turns of the yolk. I forgot how to get the ratio from that.

    and I hate to ask but would any ford 8 lug rear ends work? they had tons of those.

    thanks

    69k5
     
  3. 69K5

    69K5 1/2 ton status

    Joined:
    Nov 10, 2001
    Posts:
    1,544
    Likes Received:
    0
    Location:
    Monroe, LA
    the truck had the allison automatic in it if that makes any difference.
     
  4. 89GMCSuburban

    89GMCSuburban 1/2 ton status

    Joined:
    Nov 15, 2001
    Posts:
    3,005
    Likes Received:
    0
    Location:
    Thornton, CO
    That newer axle is an 11.5" axle. Same shafts as a 14 bolt in thickness. Locker selection is nill, there's a few people that actually make gears for it. I'd stay away...too new and the aftermarket just doesn't make stuff for it.

    I'd just get a 14FF or the D70.
     
  5. neverendingproject

    neverendingproject 1/2 ton status

    Joined:
    Jul 24, 2005
    Posts:
    1,637
    Likes Received:
    0
    Location:
    Tulsa, OK
    If it was a gas motor, then they only come in 4.10. If it was a diesel they came in 3.73, 410, and I think 4.56. Ive seen a locker for the 11.5 axle, but it was expensive. Like the 89gmc said, I would go with an older 10.5
     
  6. Seventy4Blazer

    Seventy4Blazer 3/4 ton status

    Joined:
    Apr 21, 2001
    Posts:
    5,634
    Likes Received:
    0
    Location:
    Escondido, CA
    if it is out of a diesel it will only be a 3.73 rear end....

    thats a HUGE rear end that you will never need the beef and extra weight of. a 14 bold will cost less, have the right spring perches and width. the new axle would be nice with the HUGE brakes but the 14 bolt is easily updated to disks.

    Grant
     
  7. 69K5

    69K5 1/2 ton status

    Joined:
    Nov 10, 2001
    Posts:
    1,544
    Likes Received:
    0
    Location:
    Monroe, LA
    I already have a disc brake set up for my old eaton. I can just swap it over. I can find more stuff I neeed i'm sure to spend the extra money on.

    I didnt realize it was an 11.5.

    thanks

    nathan
     
  8. surpip

    surpip 1 ton status

    Joined:
    Apr 7, 2004
    Posts:
    10,877
    Likes Received:
    0
    Location:
    sacramento ca
    daYM grab that allison
     
  9. 69K5

    69K5 1/2 ton status

    Joined:
    Nov 10, 2001
    Posts:
    1,544
    Likes Received:
    0
    Location:
    Monroe, LA
    this truck ran head on into an 18 wheeler the allison snapped in 2. the slip joint on the d shaft broke and thats why the rear survived.
     
  10. sweetk30

    sweetk30 professional hooker Premium Member

    Joined:
    Nov 1, 2004
    Posts:
    25,537
    Likes Received:
    536
    Location:
    horseheads , ny 14845
    88-up new body is 47" spred on perches center to center pin.
     
  11. 69K5

    69K5 1/2 ton status

    Joined:
    Nov 10, 2001
    Posts:
    1,544
    Likes Received:
    0
    Location:
    Monroe, LA
    sweetk30

    thanks for the measurement. I didntr get to go today. I'm still undecided about getting it or the other one.
     
  12. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

    Joined:
    Jan 27, 2003
    Posts:
    3,254
    Likes Received:
    0
    Location:
    Castro Valley, CA
    Id snatch that axle up, definetly worth more then 170.
     

Share This Page