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Thread: Casting number help '72 350
          
   
   

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  1. #1
    Matt167's Avatar
    Matt167 is offline CHR Member Visit my Photo Gallery
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    Casting number help '72 350

     



    We were replacing the valve cover gaskets on my dad's '72 C10 this weekend, and my dad told me to check the head castings, cause he wants to know how many cc they are, the last 3 digits are 820, I checked mortec but came up with nothing for that #, there is a 920 casting that is for '71-'72 350's ( no other info ither ) but his heads are deffinetly 820's, any other info? Thanks in advance.
    You don't know what you've got til it's gone

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  2. #2
    HellCaminoKid's Avatar
    HellCaminoKid is offline CHR Member Visit my Photo Gallery
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    i found this number, 3849820, which is 1965 head from a 327 1.72/1.50 valves.... didn't list a chamber size though

  3. #3
    76GMC1500 is offline CHR Member Visit my Photo Gallery
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    Probably a 64 if it is a 327 head.

  4. #4
    chevydrivin is offline CHR Member Visit my Photo Gallery
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    Speaking of casting #'s........I bought a 68 camaro (rusted out front cap) that had 210,000 original miles on it. The guy kept a book in his glove box every time he did anything, tires, oil, greased, brakes the works.....The first entery in the book was were he bought it in 1972 with 26,000 mile and was missing. Next entery was Replaced broken rocker arm at chevy dealership. Everything else was regular stuff until it jumped time at 210K. When I was checking the 327 2bbl numbers the heads show as a 1968 307 head. Did they make the 307 then? Did the factory put the wrong head on? or maybe a sneaky mechanic did a switch of the heads instead of fixing the rocker. Any ideas...

  5. #5
    Matt167's Avatar
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    Quote Originally Posted by HellCaminoKid
    i found this number, 3849820, which is 1965 head from a 327 1.72/1.50 valves.... didn't list a chamber size though
    that isn't it, the first 5 digits are 88820
    You don't know what you've got til it's gone

    Matt's 1951 Chevy Fleetline- Driver

    1967 Ford Falcon- Sold

    1930's styled hand built ratrod project

    1974 Volkswagen Super Beetle Wolfsburg Edition- sold

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