Computer PROM code
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Joined: May 2005
Posts: 99
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From: Lincolnton NC
Computer PROM code
Does anyone know the code to decipher the numbers on the computer PROM...such as 519K 8226 2044 06630? I want to order a PROM made for a four speed application (as opposed to an automatic application) and I need to give the mfg a good number.
Alternatively, is there anyone w/a 1981 , w/stock 4 speed, that would give me the numbers on their PROM? Can't use a high elevation application either.
This would make a nice Christmas present!!! jim :o
Alternatively, is there anyone w/a 1981 , w/stock 4 speed, that would give me the numbers on their PROM? Can't use a high elevation application either.
This would make a nice Christmas present!!! jim :o
Safety Car
Joined: Jul 2001
Posts: 3,921
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From: York PA
I looked long and hard for this code. I even managed to find a friend of a friend that was an engineer at GM. It's not available. Hypertech bought the orignal code from GM which is how they make the custom chip. I also couldn't find anyone that had cracked it either because it was this combination of carb/ecm was only used for one year. The monte carlos that used the same carb used a different ECM supposedly
Instructor
Joined: Nov 2005
Posts: 140
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From: Oceanside CA
I have the chip in my hand and it reads 519K 8108 1008 6630 CK1911 It also has written on the chip Delco 5839CF. This is from my 81 vette stock 4 speed So. Calif car. Hope this helps you out.
Bill
Bill
Safety Car
Joined: Dec 2004
Posts: 4,071
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From: San Diego CA
That CCC thing just stands for crap crap crap to me. Computers should have never been mixed with carburetors.
Stupid california requiring vettes to pass visual inspection crap for regular registration.
Since hypertech has it I guess they're the best way to go for that.
Stupid california requiring vettes to pass visual inspection crap for regular registration.
Since hypertech has it I guess they're the best way to go for that.
Team Owner
Joined: Oct 2004
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From: Springfield MO
St. Jude Donor '07
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Joined: May 2001
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From: Surrey
The only info I've got at hand is that the EPROM in mine is an AM27S181ADC, though I can't remember if that was the stock one or the Hypertech replacement. Either way, it doesn't matter. The thing to do is get onto a componant supplier & they should be able to source an equivalent. I know that when I looked at our supplier catalogues I couldn't find the exact EPROM. This, according to our resident digital design engineer, is because the one I was looking for was probably a "specialist" version that was for use in the automotive industry & would have some chance of surviving massive electrical spikes (but it's in the computer, so shouldn't get any?). A supplier should be able to find a replacement easily (I did). Just get a couple & carry one as a spare (just in case the general one does go pop).
One day, when I get some time, I'll try to work out what's going on in my PROM, but finding the time to do it isn't working out easy.....
One day, when I get some time, I'll try to work out what's going on in my PROM, but finding the time to do it isn't working out easy.....
