67 formula s barracuda 8 3/4 standard or option?

Transmission and Drivetrain Tech

  1. woody30

    woody30 woody30

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    Just wondering if a 67 Barracuda formula s with a 273 commando 4 bbl 4 speed would come with an 8 3/4 rear or was the 8 3/4 an option?
     
  2. HemiSSDart

    HemiSSDart Dartus Interuptus

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    99% sure it would have come with an 8-3/4. I had a 67 Dart GT convertible with a 273 4-bbl automatic and came with a factory 8-3/4. Usually if it had a 4-speed it would have one, but having said that, it is Chrysler after all...
     
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    • 66fs

      66fs FABO Gold Member FABO Gold Member

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      Mine did. 8 3/4, 3.23, sure grip.
       
    • cudavert

      cudavert DARTAHOLIC

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      I owned a '67 barracuda Non-S convertible with the Formula S options, the 235 H.P. motor & suspension......it had a 7 1/4" out back. Definitely bone stock too.....even had the original exhaust system.
       
    • mvh

      mvh FABO Gold Member FABO Gold Member

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      My 67 273 Commando/auto Barracuda with HD suspension, non-S, came with a 7-1/4. I have the window sticker and the broadcast sheet (axle code 608, pinion code 34). My understanding is that HiPo engine 4-speed cars got the 8-3/4. Sure-Grip would be an option on top of that.
       
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      • 4spdragtop

        4spdragtop CONGRATS NORTH AMERICA! FABO Gold Member

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        I believe 8 3/4 is standard equipment on S cars. Both our 67 S auto did and 69 S 4spd did. By the way welcome back Stephen:thumbsup:
         
      • mvh

        mvh FABO Gold Member FABO Gold Member

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        Here is the specs page from the 1967 Barracuda brochure. According to it, with the the 273-4 engine, the manual trans got an 8.75 3.23 standard, the auto came with a 7.25 3.23 standard. Sure-Grip was an extra cost option in all cases (see the paragraph under "Transmissions" — the table is a little confusing — when it says "std." in the Sure-Grip column it is referring to the RATIO that is standard when you order the Sure-Grip, it is not saying the Sure-Grip is "standard" for any drivetrain combo). Elsewhere in the brochure it describes the Formula S package — it doesn't say anything about it including any axle type or Sure-Grip. That said, it is very likely that dealers often "loaded up" Formula S cars with the extra-cost performance options, and of course original buyers often ordered them as well.

        67_back_cover.jpg
         
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        • cosgig

          cosgig MoBro Inc. FABO Gold Member

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          The 8 3/4” was only standard equipment only on the 383 cars in 67, it was an option on all others. Not until 68 did it become standard equipment with a small block, and only on 340 cars.
           
        • woody30

          woody30 woody30

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          ok. thanks guys.
           
        • Alaskan_TA

          Alaskan_TA Well-Known Member

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          • Thanks! Thanks! x 2
          • woody30

            woody30 woody30

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            thank you. that answers that.
             
          • str12-340

            str12-340 FABO Gold Member FABO Gold Member

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            A 7 1/4 behind a 273 4bbl... I bet Chrysler did a lot of warranty work for that idea.
             
          • 66fs

            66fs FABO Gold Member FABO Gold Member

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            I believe they did. Although the sure grip 7 1/4 was pretty tough.
             
          • cosgig

            cosgig MoBro Inc. FABO Gold Member

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            so much so that Chrysler made the 7 1/4” Suregrip standard equipment behind all 4 speed cars in 66
             
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