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  1. Thread: PROM for 81

    by like2drive
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    PROM for 81

    I'm thinking I could use a prom for a 81 stock with 4 speed. I have converted this from an automatic, and have been told that the Prom needs to be changed due to the tranny swap. I have a hypertec,...
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    been there , done that. hope this helps

    TRANSMISSION EXCHANGE PARTS LIST
    1981 Corvette Automatic Removal, 4 Speed Manual Installed
    1. Brake light switch
    2. Back-up light switch, rod, bracket, shield , screws
    3. Pedal pads
    4. Clutch...
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    3,869

    synthetic?

    any oil that has a petroleum base is not a true synthetic, imho. I've been sold on a few different brands over the last 40 years and would continue using one of them if Amzoil were not available. ...
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    parts list for '81 auto to muncie swap

    hope this helps some
    TRANSMISSION EXCHANGE PARTS LIST
    1981 Corvette Automatic Removal, 4 Speed Manual Installed
    1. Brake light switch
    2. Back-up light switch, rod, bracket, shield , screws
    3....
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    "new" 327 long block source

    Does anyone know if there is a source for a new 327 longblock. If I can find one at a decent price, I'm now toying with the idea of going non-emissions set-up with 300 HP and using a after market...
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    another possibility

    I had to push my vette out of the road :madtwice before I found the problem, that just might be yours also. there is a 3 wire connection under the distributor. one of the 3 wires is a male...
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    caution on turning the crank

    I'v read that you don't want to turn the Vette's Crank. I believe the reason was that the journal surfaces were specially treated or hardened, and you would lose that . I believe I read that here...
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    Holly rebuilts, Tpi, etc

    Man, appreciate the good come-back. I remember reading something Lars wrote about the rebuilt Q-Jets ..Holly, Eldebrock, auto store brands not being very good, but Jet had pretty good rebuilds. I...
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    Quadrajet, out of business?

    Just considering many different options. Is Rochester out of business? I know that Eldebrock(?) did make a similar carb (1901?) but the Quadrajet folks made them stop. If QJ no longer mfgs, what s...
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    thanks DarkShark, Craig

    Appreciate yo' good comebacks! regarding the OD, yea, I'm planning on either adding GearVendors Od or having Auto Gear to re-gear my Muncie so the 4th will be an OD ratio (less expensive...i think) ...
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    LT1 engine conversion

    I 'm thinking about converting to a 1995-'96 LT1 primarily for better gas mileage. While my engine (original) still runs ok, I'm tired of hoping for better gas mileage with the non-replaceable...
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    differential numbers

    I have tried to ascertain which rear end I have on my '81 without success.
    The numbers I'v found tells me nothing. they are "62580" and below that is "039534" . Since I bought this car used", the...
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    just got back from a 500 mile road trip to Helen,...

    just got back from a 500 mile road trip to Helen, Ga, with my son (who is out on spring break for the College of Charleston) . I did work the curves in those mountains and ran 80+ mostly on I85, but...
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    PROM number

    the correct PROM number for the 81, four speed application is 1225434. Can buy from Standard Blue Streak for about $80/ got the correct number from the local chevy dealer....of all places! ...
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    kunneman

    since I put together that list, there are other considerations for the 81 when switching from the auto to the four speed.
    the ECM prom is different. You can get the PROM for the manual application...
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    like most clutches, they are from overseas, and...

    like most clutches, they are from overseas, and likely both from China....for whatever thats worth. (There are many clutch “brand Names” but only about 5 or 6 mfgs..ZF Sachs, Exedy, Valeo,...
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    LannyL81

    that's interesting that you got it from Summit. Was it a regular PROM for your computer, or was it something like Hypertech's computer chips.? I was going to go w/ Hypertech until they said I'd...
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    deciphering Computer PROM numbers

    Does anyone know the code for the computer prom numbers which start w/519K? For instance, mine is 519K 8226 2044 06630. this is for a 1981 Vette w/an automatic transmission. I need the PROm...
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    Computer Prom info

    I think I've found a source for a needed PROM, but they need the numbers off of my old PROM....which I can not provide because....
    I have switched from automatic to Manual transmission. That 's the...
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    jack, rat, jdp6000

    Very noble of you to help, thanks!
    Jack, while I know a few owners who have succeeded in getting by w/bogus emission inspection, no station that I've talked to would even consider letting me slide...
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    emmission quagmire, what to do

    Here in NC, the emission laws that pretain to the 1981 models require that what ever "emission equipment" the car had originally, has to be on the car and "appear" to be functional. There is leeway...
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    why it won't work

    I'll have to skip this alternative. Hypertech informed me that i would have to upgrade to 93 octane,....(and hurricane wilma is getting ready to hit.)
    I guess I'll keep looking for a computer out...
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    As always, thank you Rare, jim

    As always, thank you Rare, jim
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    Grant steering wheel

    I've visited the Grant website and seen some nice wooden steering wheels theere, as well as in some of the Vette vendors catelogues. I have telescopic, and tilt steering which I think, restricts...
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    interior color question

    In 1981, was Cinnibar an option color for the interior with a beige exterior??
    My cousin is thinking about buying this ride, but I cautioned him that I did not think Cinnibar was the original color...
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