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CJ5 "473" or "475"

Discussion in 'Early CJ5 and CJ6 Tech' started by evanjm, Oct 2, 2008.

  1. Oct 2, 2008
    evanjm

    evanjm Yeah, it's got an F-head.

    Leesburg, VA
    Joined:
    Sep 13, 2006
    Messages:
    408
    can someone tell me the difference between a 473 CJ5 and a 475 CJ5? They're both powered by an f-head/t90 combo?

    I know a 463 is the L-head 134, and a 473 is the standard F4-134. So what's a 475 F-head?

    thanks,
    evan
     
  2. Oct 2, 2008
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
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    12,367
    I've only seen the designations you described used for early Willys wagon model designations, not for CJ's. I have a catalog showing the different designations but it's not clear on the difference in the 73 or 75 numbers, just that they're model numbers and they changed them around quite a bit.
     
  3. Oct 2, 2008
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Sep 20, 2002
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    I thought those were hp numbers?
     
  4. Oct 2, 2008
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    I always thought that too, but I've seen info saying the L-head is 60 hp, and the F-head numbers were 72 and 75, depending on the compression. What I have is from Willys America, and it of course has misprints in it on some engine info so who knows what to believe.
     
  5. Oct 2, 2008
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
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    9,221
    So it's not HP numbers? :? I know I've read that the truck model #s were the number of cylinders/hp at some point in time and then they changed all that.

    The 463 was the Go Devil version, they became the 473 with the Hurricane.

    You on the WillysTech list? I bet they know.

    Side note, I'm not aware that this ever applied to the Universal line.
     
  6. Oct 2, 2008
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
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    12,367
    The 475 designation makes perfect sense, and reading more they do say the L-head had 63 hp so that also makes sense. What doesn't add up is they called the F-head models 473, then 475 even though supposedly (according to what I'm reading) they were 72 hp. Like you said, I'm sure someone on W/T knows. :coffee::beer:
     
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