AJPE 481-x Cylinder Head serial and/or part number decoding?

Discussion in 'PSI Superchargers Tech Questions' started by GottaGoFaster, Nov 19, 2016.

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  1. GottaGoFaster

    GottaGoFaster Member

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    Hi All--

    I'm looking at purchasing a "lightly used" 481x setup that has a set of Alan Johnson (AJPE) heads on it. The seller doesn't know specifics about the heads, but he was able to grab this number off the front of one of the heads: "0321B-04 #200".

    Does anyone in the ITA world know how to decode that number to tell me what generation or stage these heads might be?

    Thanks much in advance!
     
    #1
    GottaGoFaster, Nov 19, 2016
  2. jrracing

    jrracing Member

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    Not 100% sure AJ puts numbers like that on his heads I have seen stage 1,2, or 3 on them with a serial number.
     
    #2
    jrracing, Nov 21, 2016
  3. DQUES

    DQUES Member

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    Call AJPE with that info .
     
    #3
    DQUES, Nov 21, 2016

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