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Thread: You lost your Memcal ID???

  1. #1
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    You lost your Memcal ID???

    There is a way to identify a memcal by the knock sensor board. Under the clear sealer is a code in purple, blue or black ink. I don't have a complete breakdown of the code but the second or second and third letters will identify the engine the ESC board was designed for. I have a partial list started by Ludis Langens and added to by myself and a man going by "pontiacjeff" on a few forums.

    A is for 2.8L 60 deg V6
    B is for 2.0L Turbo Sunbird
    C is for 2.3L Quad 4
    G is for 3.8 Buick V6
    H is for 2.0L Turbo Sunbird
    J is for 3.1L 60 deg V6, both NA and Turbo
    K is for 3.3L Olds V6
    R is for 5.7L TPI
    V is for 3800 Buick V6
    *or*
    05 is for 3.3L V6 Olds
    09 is for 3.1L V6
    14 is for 4.3L V6 (Turbo)
    19 is for 4.3L 90 deg V6
    35 is for 3100 V6
    36 is for 3.4L 60 deg DOHC V6

    You guys with the later TBI trucks have a chance to check a few memcals and maybe add to the list. We'll need a few to compare to make sure there's a pattern. I have a BJYA memcal which has a 26. A post in another thread lists BJYL with a 26, along with BNKM = 34 and BDYT = 16. The more data we can get together, the better our skills when we're out at swap meets & etc.

  2. #2
    Fuel Injected! gregs78cam's Avatar
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    Got to make dinner, but later tonight I will check all the PCMs I have.

    OK:
    '7060 BAJW 1022293 '91 5.7L "LO5" AUTO (4L80E)
    '6395 BJLL 1263305 '94 5.7L "LO5" AUTO
    '7427 BJFC 1194159 '94 4.3L "LB4" MAN
    '6395 BDXS 1194028 '94 4.3L "LB4" MAN
    '6395 BBNT 1193137 '93 4.3L "L35" CPI AUTO
    '8625 BBNT 1193014 '93 4.3L "L35" CPI AUTO
    '6395 BHRJ 1193272 '94 4.3L "L35" CPI AUTO

    So, if I had to guess, "194" is 4.3 TBI, and "193" is 4.3 CPI
    Last edited by gregs78cam; 02-16-2012 at 09:34 AM.
    1978 Camaro Type LT, 383, Dual TBI, '7427, 4L80E
    1981 Camaro Z-28 Clone, T-Tops, 350/TH350
    1981 Camaro Berlinetta, V-6, 3spd
    1974 Chevy/GMC Truck, '90 TBI 350, '7427, TH350, NP203, 6" lift, 35s

  3. #3
    RIP EagleMark's Avatar
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    BNKM 1345221 5.7L LO5 Auto

    BPKY 2195059 4.3L CPI trans ALL

    I also have one but cut chip out and didn't save and soldered in chip. 1263355

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  4. #4
    Fuel Injected! kunsan1987's Avatar
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    well i lucked out a couple of years ago, i had an ECM without a memcal.i found that rockauto's online catalog has listings for memcals by vehicle application.i haven't checked this in a while.

  5. #5
    Fuel Injected! JeepsAndGuns's Avatar
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    So when looking at this number, the first number is not important, and the 2nd, 3rd, and 4th numbers are the memcal models? What about the last 3 numbers?
    79 Jeep Cherokee, AMC 401, T-18 manual trans, hydroboost, 16197427 MPFI system---the toy

    93 Jeep YJ Wrangler, 4.0L, 5 speed, 8.8 rear, homebrew hub conversion and big brakes, hydroboost, 2.5in OME lift, 31x10.50's---the daily driver

    99 Jeep WJ Grand Cherokee limited, 4.0L, auto, 2wd, leather and power everything, 99% stock---the long distance highway ride.

  6. #6
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    Second and third are the identifiers. The last digits are more than likely a date code... 4159 = 159th day of 1994.
    "19" is a 4.3 engine and it's very consistent. The "02," "26," and "34" codes for the 5.7 are worth noting as that engine seems to be the same across several years. Maybe GM did some fine tuning of the knock filters.

  7. #7
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    i probably have a few 3.1 and 3.4 MEMCALs laying around, but not much else, though i know i have a 95 A-body 3100 one somewhere...

    does this help at all? found it a LONG time ago, but have no real use for it.

    http://imgur.com/9tFJR
    1995 Chevrolet Monte Carlo LS 3100 + 4T60E


  8. #8
    RIP EagleMark's Avatar
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    Very Interesting?
    Attached Images Attached Images

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  9. #9
    p is for 5.0 Tpi

  10. #10
    Aufr is U0 AYCH is 1L

  11. #11
    Super Moderator Six_Shooter's Avatar
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    BAAX ('7060 PCM, $D8) "02" for the KS circuit

    I was hoping this would help narriow down an application for a MEMCAL I have, that has no BCC, but the KS circuit ID is non-readable, if it was even there at all.... FML
    The man who says something is impossible, is usually interrupted by the man doing it.

  12. #12
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    post the BIN, it probably wouldn't be that difficult to figure out what it is...
    1995 Chevrolet Monte Carlo LS 3100 + 4T60E


  13. #13
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    I got a pile of memcals from Grumpy a few years back which I still can't ID. I've figured out a few of them but the rest are just sitting in a box.

    If you can see the numbers on the RFD chips you might be able to narrow things down a bit.
    Last edited by 1project2many; 04-20-2012 at 02:29 PM.

  14. #14
    RIP EagleMark's Avatar
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    Quote Originally Posted by 1project2many View Post
    I got a pile of memcals from Grumpy a few years back which I still can't ID. I've figured out a few of them but the rest are just sitting in a box.
    Can't you just read the prom and run it through bithoist? Then with a BCC you could match up to list being created?

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  15. #15
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    Bithoist is far from complete when it comes to US calibrations. And AFAIK it has no knowledge of overseas stuff. And, finally, there has to be a .bin file in the memcal to read. Heck, one of these is a complete custom made piece using a header from some type of industrial looking machinery. Neat stuff, but probably destined for a museum somewhere. :)

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