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NP 203 and NP 205 Crossmember Question

Discussion in 'The Garage' started by merc359, Jun 9, 2005.

  1. merc359

    merc359 1/2 ton status

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    Hi,

    My '78 shortbox chevy 4x4 had a TH350 and NP 203 transfer-case in it. I am converting to a 205 fixed/fixed yoke transfer case. I have heard that I might have to relocated the crossmember forward a couple of inches to account for the small T-Case (205 is smaller). That is very easy, of course, but is there a difference between the NP 205 crossmember and the NP 203 crossmember when both are used with a TH350?

    That sounded unnecessarily complicated....basically, when I change from a 203 to 205 what crossmember change, if any, is needed?

    Thanks,

    Merc359 :confused:
     
  2. avgas

    avgas 1/2 ton status

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    You might have to widen out the slots that the transfer case mounts to on the crossmember, I did.
     
  3. sweetk30

    sweetk30 professional hooker Premium Member

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    same unit. but some have fixed hole and others are sloted hole for the one bushing.
     
  4. avgas

    avgas 1/2 ton status

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    yeah mine had a fixed hole and I had to make it into a slotted
     
  5. mr_clean

    mr_clean 1/2 ton status

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    Same here, I had to make the drivers side hole into a slot
     
  6. TrcksR4ME

    TrcksR4ME 1/2 ton status

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    Mine bolted right in, no modifications at all. 1977 k5 with a 203 stock, and swapped in a 205 from a '74. My crossmember had one fixed hole and one slotted hole.
     

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