ECM part #
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by dirtnapp
Is there a standard part # for an 85 ECM? My buddy picked up an L98 from the bone yard and wants to make sure he has the correct ECM.
Melting Slicks
Joined: Mar 1999
Posts: 2,830
Likes: 20
From: Las Vegas Nevada
Originally Posted by dirtnapp
Is the speed density bettter?
Melting Slicks
Joined: Mar 1999
Posts: 2,830
Likes: 20
From: Las Vegas Nevada
BTW, did he get the '85 harness with the engine? If so he is set up for MAF and that would be the way to go. If the engine he got is a '85 to '89 it's set up for MAF and there is probably no reason to swap to speed density. If it's a '90 - '91 engine it's Speed Density and there is really no reason to swap to a MAF setup.
Either would be fine. It depends on which engine he got.
Either would be fine. It depends on which engine he got.
Melting Slicks
Joined: Mar 1999
Posts: 2,830
Likes: 20
From: Las Vegas Nevada
A quick google search revealed this:
http://72.14.207.104/search?q=cache:...ient=firefox-a
Scroll down to "Electronic Control Module(ECM)" and from the list it looks like the ECU is the same, and is only for the 1985. From everything I've heard the 1985 is it's own animal. That ECU will only work in a 1985 harness unless modifications to the wiring are made.
Another factor (which I don't know what the answer is) is that the ECU is the same from 305 to 350, but the chip might be different depending on which engine the car received. Someone with more knowledge should be able to answer this.
hope this helps,
http://72.14.207.104/search?q=cache:...ient=firefox-a
Scroll down to "Electronic Control Module(ECM)" and from the list it looks like the ECU is the same, and is only for the 1985. From everything I've heard the 1985 is it's own animal. That ECU will only work in a 1985 harness unless modifications to the wiring are made.
Another factor (which I don't know what the answer is) is that the ECU is the same from 305 to 350, but the chip might be different depending on which engine the car received. Someone with more knowledge should be able to answer this.
hope this helps,
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Melting Slicks
Joined: Mar 1999
Posts: 2,830
Likes: 20
From: Las Vegas Nevada
Dirtnapp, did he get the harness with the engine?
If not there are several companies that offer engine harnesses for TPI engines that are used in swaps. It's fairly common in street rods etc.
If not there are several companies that offer engine harnesses for TPI engines that are used in swaps. It's fairly common in street rods etc.
