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.

sugestions needed, convert to sm465??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by BlazerBoy, Feb 28, 2001.

  1. BlazerBoy

    BlazerBoy 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    639
    Likes Received:
    0
    Location:
    Chicago IL.
    i have an 87' with a 700r4 and a np208 and 10 bolts, I have always wanted to convert to a sm465. But I rebuilt my tranny a little while ago, installed a cooler, deeper pan, and a trans temp gauge, and a B&m torque converter. When rebuilding it I think I cut a seal because it slips from second into third. So i know it isnt perfect, who knows how long it will last. My question is I have the option to pick up a running 78' with the a 350, sm465, 205 with a dana 44 front and 12 bolt rear for 700 bucks. After all of the money I spent on that 700r4, would I be silly to swap it out for the 465. But if I were to buy this truck I could swap the 208 for the 205 and the 10 bolt for the 12. With all of the years for the 465 and the 205 are there any years in particular that are better or stronger than others?? Any advise is welcome.. thanks

    BlazerBoy
    http://generalblueballs.coloradok5.com
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

    Joined:
    Dec 13, 2000
    Posts:
    26,982
    Likes Received:
    191
    Location:
    Roy WA
    "With all of the years for the 465 and the 205 are there any years in particular that are better or stronger than others?? Any advise is welcome.."

    Haha! They got both of them right the first time! Actually there are probably some differences, I don't think there is any way to go wrong with an SM465/NP205 though, unless the SM465 needs new bearings, which might be the case after 200,000 miles. You might consider the swap, although you have to realize it will not be "easy" and if I were you, I would go with hydraulic clutch setup, since that is what your '87 is designed for. I like knowing that there is no reason to worry about whether my transmission or transfer case will break, because I know they won't!

    Dorian
    My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>
     
  3. fastzilla

    fastzilla Registered Member

    Joined:
    Feb 12, 2001
    Posts:
    20
    Likes Received:
    0
    Location:
    Dallas, TX
    You've got the 10 spline NP205 so the 27 spline of the 700r4 won't work unless you spend $180 to change the NP205 input shaft and gear out... The NP208 is stronger than your trans and had a lower lo-range.... Sell the NP205 for $200 or so on the 4-sale pages, you can ship it UPS anywhere in the states for less than $61.50. Not to mention you will have to find a 700r4 to NP205 adapter, another $200...
    Eddie
     
  4. BlazerBoy

    BlazerBoy 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    639
    Likes Received:
    0
    Location:
    Chicago IL.
    oh no I definatly would love to swap to the 465. I am just not sure I should after all of the money I spent on the 700r4 I have. What type of output would be on that 205? a fixed or a slip, I just had a custom built cv shaft made for my 208. Where would I find a hyd. clutch set up? Is it expensive? Also is it a pretty forward swap, I would have everything from the donor truck? Thanks again..

    BlazerBoy
    http://generalblueballs.coloradok5.com
     
  5. thatK30guy

    thatK30guy 1 ton status Premium Member

    Joined:
    Jan 12, 2001
    Posts:
    32,076
    Likes Received:
    55
    Location:
    .
    The 78 should have the fixed yoke, which is what you want. The slip yokes started in 80. The slip yokes are not what you want. If a shaft or u-joint broke on the rear, you would have fluid leaking out the tailshaft housing. With a fixed yoke, the shaft breaks, simply lock the hubs and drive in front wheel drive, with no worries of fluid leaking.
     
  6. bigerik

    bigerik 1/2 ton status

    Joined:
    Feb 24, 2001
    Posts:
    184
    Likes Received:
    0
    Location:
    Sonoma County, CA
    Goodbye 700-R4/NP208/10 bolts, hello SM465/NP205/Dana 44/12 bolt!
     
  7. BMR

    BMR 1/2 ton status

    Joined:
    Feb 25, 2001
    Posts:
    132
    Likes Received:
    0
    Location:
    Northern Colorado
    If you do it let me know I'm thinking about doing the same swap for my 85. Either a 465 or a 4500. Curious to see how it goes.
     

Share This Page