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.

14 bolt vs Eaton

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by blzr83, Feb 12, 2002.

  1. blzr83

    blzr83 Registered Member

    Joined:
    May 11, 2000
    Posts:
    72
    Likes Received:
    0
    Location:
    eugene OR
    Hey, opinions on strength of an Eaton 1 ton rearend (12 1/4 inch ring gear) verses a 14 bolt. I know the shafts are about the same size (1.55 vs 1.5) but the splines are 17 for the eaton. On a K5 with a mild small block with this cause problems? Any thoughts? Thanks.
     
  2. 55Willy

    55Willy 3/4 ton status

    Joined:
    Jun 2, 2001
    Posts:
    9,946
    Likes Received:
    0
    Location:
    Keizer, Or
    I don't see a problem with using it, just check to see if the eaton has the ratio you need. Just check the parts that are available for it, some parts maybe harder to get since they aren't used by GM for a long while, where as the 14 is still used today.



    <hr></blockquote>
    What do you mean, Where did I get it??...I <font color=blue>BUILT</font color=blue> the damn thing!!
     
  3. Seventy4Blazer

    Seventy4Blazer 3/4 ton status

    Joined:
    Apr 21, 2001
    Posts:
    5,634
    Likes Received:
    0
    Location:
    Escondido, CA
    the 14 bolt is a BIG housing. the eaton is even bigger. if you can get a good deal on it hey, might be worth it. but the way i see it do it once and do it so you can have the ground clearance you need.
    just my thoughts.
    Grant

    1974 Chevy Blazer Cheyanne. but it is on 33's now, with saggy old springs. i am in Yuma Arizona if ya got any parts for me.
     
  4. POFF

    POFF 1/2 ton status

    Joined:
    Aug 13, 2001
    Posts:
    221
    Likes Received:
    0
    Location:
    San Diego, CA
    When you say Eaton are refering to the old FF Corp. 10 bolt?

    '70 K-20 San Diego, CA
    I know, I can't spell!
     
  5. ChadH82

    ChadH82 1/2 ton status

    Joined:
    May 9, 2001
    Posts:
    400
    Likes Received:
    0
    Location:
    Stillwater, Oklahoma
    They're talking about the axle that has a 3rd member like a 9 inch. It may have 10 bolts, I don't remember.

    Chad
    '73 Blazer,383,400,Atlas II,D60/14 Bolt,traclok/detroit,39.5 Swamps <a target="_blank" href=http://members.aol.com/fileholder2meg/projblazer.html>Clicky</a>
     
  6. dysphemism

    dysphemism 1/2 ton status

    Joined:
    Oct 26, 2001
    Posts:
    667
    Likes Received:
    0
    Location:
    Fremont, CA
    just remember that the newest eaton is still a dinosaur. Parts availability for a 14 bolt is awesome compared to an old eaton unit. Its like an old big block versus a new small block. Id rather have a crate 350 than a 70's 454

    1986 GMC Jimmy 6" springs 3" body, 38/15.5/15 Swampers, 14-bolt FF rear, Dana 60 front, 1991 front-end.
     
  7. Corey 78K5

    Corey 78K5 1 ton status

    Joined:
    Feb 17, 2000
    Posts:
    13,055
    Likes Received:
    0
    Location:
    Humboldt County, CA
    HU I don't know where you get your info but there is ton's of parts for the "70's" 454 and by the way it was the same motor up untill they changed to a one piece rear main around 86 and that was nothing drastic. Go check out some high performance places and see the parts you can get for a 454. Probably just as many as you can for a new crate smallblock.


    Corey 78K5
    350CI, TH350, 203, Dana 44,12 Bolt, 4"lift, Shackel Flip, Sawsall and 35" BFG's
     
  8. POFF

    POFF 1/2 ton status

    Joined:
    Aug 13, 2001
    Posts:
    221
    Likes Received:
    0
    Location:
    San Diego, CA
    My '70 K-20 had a Corp. 10 bolt that I believe was an Eaton axle. It needed carrier bearings, bad. I got a 14 bolt and had it rebuilt for less than I could have rebuilt the Eaton. You can 't get lockers for Eaton axles any more. Locker for a 14 bolt: $300. Brakes are half the price on a 14 bolt!

    '70 K-20 San Diego, CA
    I know, I can't spell!
     
  9. dysphemism

    dysphemism 1/2 ton status

    Joined:
    Oct 26, 2001
    Posts:
    667
    Likes Received:
    0
    Location:
    Fremont, CA
    so corey youre telling me youd rather have a junkyard 454 in your rig without any mods than a new crate 350? hmm i dunno about that one. Im not saying modified Im saying a stronger engine isnt so strong after 30 years. Of course a 454 is more powerful when you rebuild it thats not my point. Im talking about how a seemingly stronger thing loses appeal after so long.

    1986 GMC Jimmy 6" springs 3" body, 38/15.5/15 Swampers, 14-bolt FF rear, Dana 60 front, 1991 front-end.
     
  10. TrcksR4ME

    TrcksR4ME 1/2 ton status

    Joined:
    Feb 11, 2002
    Posts:
    2,482
    Likes Received:
    0
    Location:
    Seattle, WA 98103
    Couldn't you buy a junk yard 454 and rebuild it with performance parts for less than a crate 350 engine? My 72 402BB runs just fine, rather run that than a 350 anything. Anything you can do to a 350 you can do to a big block better :p
     

Share This Page