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Thread: Freeze Plug Size

  1. #1
    Join Date
    Dec 2008
    Location
    Georgia
    Posts
    129

    Question Freeze Plug Size

    I searched the site and see some discussion regarding freeze plugs, brass or rubber etc. However, I have a 73 CJ5 with AMC 304. After removing the exhaust manifold I see that 2 of my freeze plugs, are "weeping" or leaking a little. I was thinking now is the time to replace them. When searching the American Motor Parts site I see that there are a couple of different sizes, 1in, 1.5in and 2in. Which on is the correct size metal plug for my 73 304?
    '73 CJ5, AMC 304 V8, Dana 20, T15 Tran

  2. #2
    Join Date
    Oct 2005
    Location
    Newnan, Georgia
    Posts
    1,661

    Default Re: Freeze Plug Size

    Can you measure the ones in the block...just to be sure?
    Norm

    '74 CJ5 "Atomic Orange", D30&44 @ 3.73
    360 / T-18a / twin stick Dana 20 / front Aussie locker

    '67 Steven M416

  3. #3
    Join Date
    Dec 2008
    Location
    Georgia
    Posts
    129

    Default Re: Freeze Plug Size

    yeah thought about that, I was gonna try to order em last night, to dark to measure I will put a tape on them this afternoon, thought there may have been a standard size
    '73 CJ5, AMC 304 V8, Dana 20, T15 Tran

  4. #4
    Join Date
    Aug 2003
    Location
    Medford Mass USA
    Posts
    15,145

    Default Re: Freeze Plug Size

    The Dorman catalog may tell you ... http://www.dormanproducts.com/

    No time to look it up right now.
    Tim Reese
    '75 CJ-6, Copper Polly 304/T15
    '77 J10 type 45 (131" WB) 258/T15/3.54
    '82 J20 type 27 360/T18/NP208/3.73 7600 GVWR
    '95 VW Golf Sport 2D 2L

  5. #5
    Join Date
    Dec 2008
    Location
    Georgia
    Posts
    129

    Default Re: Freeze Plug Size

    Measured mine this afternoon 1.5 inches, if this helps anyone else.
    '73 CJ5, AMC 304 V8, Dana 20, T15 Tran

  6. #6
    Join Date
    Sep 2005
    Location
    Fair Oaks, CA
    Posts
    867

    Default Re: Freeze Plug Size

    Coincidentally, the same size as the access holes to your intermediate windshield wiper linkage.

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