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Thread: plugs for rear of head

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  1. #1
    kompressor is offline CHR Member Visit my Photo Gallery
    Join Date
    Aug 2004
    Car Year, Make, Model: 1950 Ford 2dr

    plugs for rear of head


    Can anyone tell me what size plug would go into the hole in the rear of the heads for a 302. This is where the air injector bolts on at the rear of the heads. If you have a part number for the bolts that would be great.


  2. #2
    thesals's Avatar
    thesals is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2004
    san diego
    Car Year, Make, Model: 66 mustangFB, 69 econline Drag Van

    not positive but i believe its the same size as the freeze plugs that screw into the block isn't it?
    just because your car is faster, doesn't mean i cant outdrive you... give me a curvy mountain road and i'll beat you any day

  3. #3
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
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    Jul 2003
    Car Year, Make, Model: '67 Ranchero, '57 Chevy, '82 Camaro,

    Easiest way is a freeze plug and a small plate over it. The hole is not threaded, by the way. Pound the freeze plug into the hole (I don't remember the size, NAPA has them for me), then fab a small plate to cover the freeze plug and attach it to the head where the bolt used to go for the air tube. The plate probably is not essential, I always make one just to be real sure the plug stays in. I install the plug with just a bit of hi-temp sealant on it, too.
    Yesterday is history, tomorrow is a mystery, Live for Today!
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  4. #4
    dr_bowtie's Avatar
    dr_bowtie is offline CHR Member Visit my Photo Gallery
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    Jan 2005
    Car Year, Make, Model: 1957 chevy Belair

    I don't know if this pertains but, I did a 351 that had the air ports and they were threaded and it was a Metric thread....
    I used a 1/2 deep bolt with sealer...

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