5.7 k1500 computer confusuion???

Bwk7155 · 09-17-2009, 03:00 PM

I have a 1993 chevy k1500 with a 4.3l v6 in and i currently have a 5.7l v8 to drop in and i have every thing i need to convert over except the computer..... there are about 4 diffrent types of computers I can get for my truck and not knowing the number off of the old one and no way of getting it I do not know witch one to get. and I also herd about mabey getting a new computer and putting my 4.3 prom on the new 5.7 computer. Will that work??

NCroadracer · 09-17-2009, 03:10 PM

Prom... No!

Do you know what veh the motor came out of and do you have access to the VIN#

Bwk7155 · 09-17-2009, 03:16 PM

I do know that it is out of either a 90 or 91 chevy k1500 buy i have no way of getting the vin of the vehicle it was in but i do know there is a serial number on the motor if that will do me any good other than that thats all i got.

NCroadracer · 09-18-2009, 06:01 AM

Here is the P/N to the pCM you will need for that engine.. 88999146 Any PCM from the scrap yard bearing this number will also have a CalPak and EPROM already in it that will work with that engine.

Stitz Love · 09-26-2009, 07:45 AM

...? Say... with the problems I am having lately... ('90 c-1500 with '94 5.7) this thread got me wondering... my truck was originally equipped with the (v-6) 4.3... the '94 5.7 was installed about 70,000 miles later, but the computer is still the original.
It drove and ran great for about 1,200 miles... now it won't idle worth a darn and bogs down while accelerating... (lopes while trying to idle)... etc. I am trying to resolve it...(details can be found on my posts)
But from reading your postings here, I am getting the indication that when an engine swap is done, a new computer (ECM?) is required?
ps, ...not trying to hijack your thread here... I'm just looking for answers with a very limited amount of time. I am interested to see (read) the results of your swap-out project.

silverhairdeere · 09-26-2009, 02:56 PM

Quote:

Originally Posted by Stitz Love

...? Say... with the problems I am having lately... ('90 c-1500 with '94 5.7) this thread got me wondering... my truck was originally equipped with the (v-6) 4.3... the '94 5.7 was installed about 70,000 miles later, but the computer is still the original.
It drove and ran great for about 1,200 miles... now it won't idle worth a darn and bogs down while accelerating... (lopes while trying to idle)... etc. I am trying to resolve it...(details can be found on my posts)
But from reading your postings here, I am getting the indication that when an engine swap is done, a new computer (ECM?) is required?
ps, ...not trying to hijack your thread here... I'm just looking for answers with a very limited amount of time. I am interested to see (read) the results of your swap-out project.

if it were your prom , it wouldn't have ran great for 1200 miles , you have other problems , maybe fuel , smog , or electrical . get a good scan .

shd

09-17-2009, 03:00 PM	#1
Bwk7155 Full Member Join Date: Sep 2009 Location: Grantville, Pa Posts: 16	5.7 k1500 computer confusuion??? I have a 1993 chevy k1500 with a 4.3l v6 in and i currently have a 5.7l v8 to drop in and i have every thing i need to convert over except the computer..... there are about 4 diffrent types of computers I can get for my truck and not knowing the number off of the old one and no way of getting it I do not know witch one to get. and I also herd about mabey getting a new computer and putting my 4.3 prom on the new 5.7 computer. Will that work??

09-26-2009, 07:45 AM	#5
Stitz Love Senior Member Join Date: May 2009 Location: North Carolina Posts: 99	...? Say... with the problems I am having lately... ('90 c-1500 with '94 5.7) this thread got me wondering... my truck was originally equipped with the (v-6) 4.3... the '94 5.7 was installed about 70,000 miles later, but the computer is still the original. It drove and ran great for about 1,200 miles... now it won't idle worth a darn and bogs down while accelerating... (lopes while trying to idle)... etc. I am trying to resolve it...(details can be found on my posts) But from reading your postings here, I am getting the indication that when an engine swap is done, a new computer (ECM?) is required? ps, ...not trying to hijack your thread here... I'm just looking for answers with a very limited amount of time. I am interested to see (read) the results of your swap-out project. __________________ 1990 Chevy Cheyenne, (2wd / AC) came with a; 1994 5.7 from Police Cruiser (Caprice?) installed by previous owner. (It sat for 7 years before I bought it.) Last edited by Stitz Love; 09-26-2009 at 07:49 AM. Reason: clarity

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09-17-2009, 03:10 PM	#2
NCroadracer Senior Member Join Date: Apr 2007 Posts: 295	Prom... No! Do you know what veh the motor came out of and do you have access to the VIN#

09-17-2009, 03:16 PM	#3
Bwk7155 Full Member Join Date: Sep 2009 Location: Grantville, Pa Posts: 16	I do know that it is out of either a 90 or 91 chevy k1500 buy i have no way of getting the vin of the vehicle it was in but i do know there is a serial number on the motor if that will do me any good other than that thats all i got.

09-18-2009, 06:01 AM	#4
NCroadracer Senior Member Join Date: Apr 2007 Posts: 295	Here is the P/N to the pCM you will need for that engine.. 88999146 Any PCM from the scrap yard bearing this number will also have a CalPak and EPROM already in it that will work with that engine.