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73' chevy pickup?

Discussion in 'The Garage' started by rjfguitar, Dec 6, 2003.

  1. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    73\' chevy pickup?

    My brother in law, father in law, and I are going to sell the 79' f150 that my bro in law bought a while back and look for a 73' Chevy pickup. We are here in Cali and 73' is the last year for smog exemption so thats what we want. I am the 4x4 chevy guy between the 3 of us and I want a 73' 3/4ton 4x4 with 4.10 or 4.56 gears. I am still wondering is there anything that I should look out for as far as it being a stouter part, rare option, and stuff to stay away from. The main thing I don't wan't is the 203 with full time 4x4 but I think that wasn't out yet in 73' right? still a 205? /forums/images/graemlins/1zhelp.gif
     
  2. Muddytazz

    Muddytazz 1 ton status

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    Re: 73\' chevy pickup?

    [ QUOTE ]
    but I think that wasn't out yet in 73' right? still a 205?

    [/ QUOTE ]

    The auto tranny was a 203, the 465's had the 205's
     
  3. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    Re: 73\' chevy pickup?

    '74 and older is smog exempt in Cali now.

    And my 465 has a 203. Only an option in '74 though. /forums/images/graemlins/smile.gif
     
  4. R72K5

    R72K5 Banned

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    Re: 73\' chevy pickup?

    most places list 203 as being 74-79 years, but sometimes you see listed as 73 too, i think 73 is still 205 just like in 72, if its full time originally then would have full time info on driver sun visor

    in 73 for 3/4 ton there was just dana 44 and 14 bolt FF and that was it, nothing weak or anything to watch out for to stay away from really and good ol eaton disc type posi was still used so worries about gov lok or anything either, GM was still building them good in 73 too.
     
  5. Blazer1970

    Blazer1970 1/2 ton status

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    Re: 73\' chevy pickup?

    The '73 K20 that I parted out a while ago had a TH350/NP205. I am not sure if there was an option for the 203 or not.
     
  6. fourwheelerjeff

    fourwheelerjeff 1/2 ton status Staff Member Moderator

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    Re: 73\' chevy pickup?

    i have had 2 73's; both had 350/205's in them

    on the smog exempt, i thought that was a rolling year change from what i have read, might want to check it out
     
  7. sundevil

    sundevil Registered Member

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    Re: 73\' chevy pickup?

    The official Rule in Cali is the Current year minus 29 years are smog exempt (so in a month it will be 2004 - 29 = 1975). I was thinking of registering my K5 out there if it doesn't pass smog (AZ is all vehicles 68 and before....bogus).
     
  8. jwduke

    jwduke 1/2 ton status

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    Re: 73\' chevy pickup?

    I think going to a NP203 was in '74, cause my aunt's '73 GMC had a 205, and my '74 was a 203. I think '74 was the only year for a 203 with a manuel tranny. (What a joke! /forums/images/graemlins/rotfl.gif)
     
  9. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    Re: 73\' chevy pickup?

    [ QUOTE ]
    I think going to a NP203 was in '74, cause my aunt's '73 GMC had a 205, and my '74 was a 203. I think '74 was the only year for a 203 with a manuel tranny. (What a joke! /forums/images/graemlins/rotfl.gif)

    [/ QUOTE ]

    A joke? I don't think so. A 465 with a 203 behind it is what ya need for a Doubler. Or the adapter atleast.

    And I believe NoSmog73's truck has the 350/203 combo in it. Also look at the specs for the '73 model year-
    http://www.coloradok5.com/specs.shtml#1973
    The 203 was available behind the auto. 205 behind the manual.
     
  10. jwduke

    jwduke 1/2 ton status

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    Re: 73\' chevy pickup?

    [ QUOTE ]
    [ QUOTE ]
    I think going to a NP203 was in '74, cause my aunt's '73 GMC had a 205, and my '74 was a 203. I think '74 was the only year for a 203 with a manuel tranny. (What a joke! /forums/images/graemlins/rotfl.gif)

    [/ QUOTE ]

    A joke? I don't think so. A 465 with a 203 behind it is what ya need for a Doubler. Or the adapter atleast.

    And I believe NoSmog73's truck has the 350/203 combo in it. Also look at the specs for the '73 model year-
    http://www.coloradok5.com/specs.shtml#1973
    The 203 was available behind the auto. 205 behind the manual.

    [/ QUOTE ]

    If they were so great, how's come GM only built them 1 or 2 years, and then went back to the 205/465 combination?? I'm sorry I didn't specify, both of these were trucks, not Blazers. Guess they did some things different on the trucks. My aunt's was a 3/4t GMC p/u, w/a TH350 & a NP205. My '74, was a 1/2t, with a TH350 & a NP203. A pickup, may have made the difference here, I dunno......
     
  11. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Re: 73\' chevy pickup?

    I don't think they "went back" to the 465/205 combo. I don't think there was a 465 until '73.

    I don't think that there's any question as to which 'case is stronger. Unless you're doing a doubler or prefer full time 4wd, there is absolutely no advantage of a 203 over a 205 that I can think of. Not that the 203 is a terrible case, either, but the 205 is pretty much bombproof and it's hard to say that you'd swap your 205 for anything else.
     
  12. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Re: 73\' chevy pickup?

    [ QUOTE ]
    in 73 for 3/4 ton there was just dana 44 and 14 bolt FF and that was it, nothing weak or anything to watch out for to stay away from really and good ol eaton disc type posi was still used so worries about gov lok or anything either, GM was still building them good in 73 too.


    [/ QUOTE ]

    IIRC, they were using tiny u joints and wheel bearings in the 1st design D44. Something about having D30 sized front joints and smaller bearings throws up a huge flag to me that the 73 axle would be significantly weaker. Easy to swap to late style outers though.
     
  13. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    Re: 73\' chevy pickup?

    Hmm, I know about the 74' becomeing smog exempt but I want to stay away from the 203 full time stuff. What motors were options on the 73' and 74' 3/4tons? my guess is a 350,400,454. I would like to find one with a 465 in it and add a gear venders or browning 2 spd on it too for some decent mileage on the highway and for a good crawl ratio.

    Onw more question regarding the gov-loks... I have a 77' 14BFF under my K5 with a gov lok and is it still the same unit in the older trucks?
     
  14. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    Re: 73\' chevy pickup?

    [ QUOTE ]
    I don't think they "went back" to the 465/205 combo. I don't think there was a 465 until '73.


    [/ QUOTE ]
    Are you shure about that? a lot of guys on here with first gens have 465's. My 2wd 69' has a 465 in it.
     
  15. jwduke

    jwduke 1/2 ton status

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    Re: 73\' chevy pickup?

    [ QUOTE ]
    I don't think they "went back" to the 465/205 combo. I don't think there was a 465 until '73.

    [/ QUOTE ]

    Well, according to http://www.coloradok5.com/specs.shtml#1969 the 465 was offered by GM/Chevrolet in the '69 K5 Blazer, so it was probably offered in the truck (K10) also.
     
  16. Blazer1970

    Blazer1970 1/2 ton status

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    Re: 73\' chevy pickup?

    [ QUOTE ]
    [ QUOTE ]
    in 73 for 3/4 ton there was just dana 44 and 14 bolt FF and that was it, nothing weak or anything to watch out for to stay away from really and good ol eaton disc type posi was still used so worries about gov lok or anything either, GM was still building them good in 73 too.


    [/ QUOTE ]

    IIRC, they were using tiny u joints and wheel bearings in the 1st design D44. Something about having D30 sized front joints and smaller bearings throws up a huge flag to me that the 73 axle would be significantly weaker. Easy to swap to late style outers though.

    [/ QUOTE ]

    '73s had 297 u-joints in Dana 44s. '72 was the last year for the 260s. They did carry over the smaller bearings for a few more years.

    The SM465 replaced the SM420 in 4 speed trucks (and Blazers) starting in 1969.
     
  17. bigjbear

    bigjbear 1 ton status Staff Member Moderator

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    Re: 73\' chevy pickup?

    I only have personal experience with three 1973's: My dad's K10, my K5, and another K5 I looked at but didn't buy. All had the same drivetrain: 350/TH350/NP203/D44/12B. The one I didn't buy appeared to have 5-260 u-joints, but it was on 38s so it is quite likely the shafts had been swapped w/ older ones. Every reference I have read says all '73 & up should have the 297s.
     

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