'79 to '81-85 12A Swap...
#1
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'79 to '81-85 12A Swap...
Allright. What kind of hell am I gonna go through trying this? ^^
So far, the major differences that I see are as follows:
On the wiring harness, the 81-85 has five sensors located just to the driver's side of the air filter, where the 79-80 has only the oil-thermo and the water temperature gauge sensors. The connector to the power lead is the same, with only a difference in missing pins (shown).
The 79-80 sensors and harness connector.
The 81-85 sensors and harness connector.
Has anyone tried this? Am I gonna have to refit the whole wiring harness to adjust for the difference in sensors?
So far, the major differences that I see are as follows:
On the wiring harness, the 81-85 has five sensors located just to the driver's side of the air filter, where the 79-80 has only the oil-thermo and the water temperature gauge sensors. The connector to the power lead is the same, with only a difference in missing pins (shown).
The 79-80 sensors and harness connector.
The 81-85 sensors and harness connector.
Has anyone tried this? Am I gonna have to refit the whole wiring harness to adjust for the difference in sensors?
Last edited by Griffiss; 03-06-05 at 06:24 PM.
#2
Are you swapping the '79 engine into the '81-85 chassis, or vice versa? The 12A block is nearly identical, except the '79 will not have a threaded hole in the block for the oil pressure send. I don't think there's any other block differences.
If swapping the '79 block into an '81 - 85 chassis, just drill and tap some threads into the oil cooler line's banjo bolt for an oil pressure send. Use an '81 - 85 wiring harness, ignition system, carb and emissions.
...Or maybe I am misunderstanding the question?
If swapping the '79 block into an '81 - 85 chassis, just drill and tap some threads into the oil cooler line's banjo bolt for an oil pressure send. Use an '81 - 85 wiring harness, ignition system, carb and emissions.
...Or maybe I am misunderstanding the question?
#3
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It was the wiring in particular that I was concerned about.
It appears to be an 81-83 engine, which I'm putting into my '79 SA while we port and rebuild the '79 shortblock. Thanks for the advice.
It appears to be an 81-83 engine, which I'm putting into my '79 SA while we port and rebuild the '79 shortblock. Thanks for the advice.
#4
I'm going thru the same problem have 1980 and installing 1983 rebuilt motor and trans it look like it might be beat to find a 83 or ECU and harness does anyone know what ECU might work?
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