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208 vs 241

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by tom, Aug 15, 2000.

  1. tom

    tom 1/2 ton status

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    Is there any difference between a 208 and a 241? Which one is stronger? Are they interchangeable? I know they are not as stong as a 205, but they have a better gear ratio for rocks.
     
  2. CK5

    CK5 In my underwear Administrator Premium Member GMOTM Winner Author

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    I believe the 208 and the 241 have the same size chain with the 203 being a little wider. I have the 241 with 170,000 miles and no problems so far and they currently use them on 3/4 and 1 ton trucks. You do have a few more options with the 241, like a 4 to 1 kit (expensive) and a fixed yoke kit. They are probably about the same as strength but don't know mutch about the 208.

    [​IMG]
    5,000 Pounds of American Rolling Steel
     
  3. BlazerGuy

    BlazerGuy 3/4 ton status

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    I think they are the same. Except the 208 has a 2.61:1 low range and the 241 has a 2.72:1 low range.

    [​IMG]
     
  4. Brian 89KBlazer

    Brian 89KBlazer 1/2 ton status

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    The 241 is basically a reworked 208, both are aluminum housing and chain drive. The biggest difference between the two is that the 241 is supposed to have an improved lubricating system. That is supposed to be the main reason for failures in the NP208, lack of lubrication. Strengthwise, I'd guess they're about equal. I haven't come across a torque spec yet but I say they're certainly up to the torque of most smallblocks.

    Brian
    89KBlazer
     
  5. Blazer1970

    Blazer1970 1/2 ton status

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    My brother's 1 ton 4X4 dually Dodge with the V-10 has an NP241 transfer case. That truck has a Dana 80 rear end, I think. Not that the Dodge V-10 is that much of a torque monster, but that t-case is pretty good overkill for 1/2 ton small block powered trucks.

    Tim

    1970 Blazer CST 4X4 350 SM465 NP205
    1987 Suburban 4X4 350
    1988 Chevy Pickup 4X4 350
     
  6. ken

    ken 1/2 ton status

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    The 241 in my '90 Sub has been through 4 700R4 trannys, and 2 350 engines, while the 241 is original with 250,000 miles!!!

    ken
     
  7. tom

    tom 1/2 ton status

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    Great input; Thanks. Sounds like the 241 is no problem in my small block blazer. Is the fixed yoke kit a good investment? What does it do besides improve drive angles. Hey, here is another thing. The 421 case hangs fairly low. The crossmember is hung down on 1 inch spacers which I am told the factory put in. Can I just remove the spacers to get a little more breakover clearance? Maybe with a yoke kit, the drive angles wouldn't change much. The truck only has about 2 inches of lift.
     
  8. River

    River 1/2 ton status

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    I have a problem with my `89 K5. The NP241 makes noise, when i`m driving in 4wd it`s sounds like a bearing is damage in the transfer case. The car is driven for a long time whit hub locks on.
    Does anybody know where i can buy a rebuild kit for the NP241?

    Greetings from Amsterdam,

    River `89 K5, 350, TH700R4, NP241, "33, 2.73, 10 bolt F, 12 Bolt R
     
  9. BlazerGuy

    BlazerGuy 3/4 ton status

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    4 Wheel Parts had one last time I was there. I forgot how much it costs though, somewhere around 190-210 bucks. Anybody know the difference between the NP231 and the NP241?

    [​IMG]
     
  10. CK5

    CK5 In my underwear Administrator Premium Member GMOTM Winner Author

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    NP231 are used in Jeeps, I think they are a tad lighter duty, but I could be wrong.

    [​IMG]
    5,000 Pounds of American Rolling Steel
     
  11. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    The 241 is just a bigger, beefier t-case. The 231 uses a 3 gear planetary, the 241 uses a 6 gear planetary.
    It might be heresy on this board but I've heard it said that the 208 is actually a stronger case than the 241, and the oiling problems were'nt very well addressed by the change in design to the 241. That being said, both cases in my humble opinion are more than strong enough. Their only drawback strength wise is that they are aluminum.
    I read this in "4 Wheel and Off-road", awhile back when they did an article comparing T-cases.
    Sure wish my 205 had the same low range though![​IMG]

    Rene <font color=red> 81 K-20 Jimmy </font color=red>
    <font color=green>[​IMG]"God hates a coward"</font color=green>[​IMG]
     
  12. BlazerGuy

    BlazerGuy 3/4 ton status

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    I was looking in the 4WP catalog for the price of the rebuild kit(it didn't have an exact price) and it said that the NP231 came in 88-up 1/2 & 3/4 Blazer, Subs. I also said that it came in 87-90 YJ's

    [/image]
     
  13. CK5

    CK5 In my underwear Administrator Premium Member GMOTM Winner Author

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    That is a misprint on 4wp part, they never put the NP231 in a full-size GM.

    [​IMG]
    5,000 Pounds of American Rolling Steel
     
  14. 90K5

    90K5 1/2 ton status

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    THe 241 has a better lubricating system and the low range is 2.72:1 instead of 2.61:1 for the 208

    90K5
     
  15. DMK

    DMK 1/2 ton status

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    The 231 H.D. comes in half ton rams. Would think the 241 and 208 are the same strengh wise. The 208 does have thicker gueseting on the tailshaft.
     

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