Gen 4 engine bay instal a gen 3 motor
11-19-2018, 10:38 PM
#1
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Gen 4 engine bay instal a gen 3 motor
I have a 2008 silverado with a 4.3 v6 with e38 ecu ... I want to swap in a gen 3 with a 411 ecu.
My question is::
When i remove the old 4.3 v6 motor and engine harness unpluging from fuse box.
Can i install a new 6.0 gen 3 and matching gen 3 engine harness AND ECU will it plug into the fuse box and run.
I have hp tuner to re-flash vats.
My question is::
When i remove the old 4.3 v6 motor and engine harness unpluging from fuse box.
Can i install a new 6.0 gen 3 and matching gen 3 engine harness AND ECU will it plug into the fuse box and run.
I have hp tuner to re-flash vats.
Last edited by WILLIAMN72; 11-19-2018 at 10:47 PM.
11-19-2018, 10:48 PM
#2
No.
Nothing about the wiring between a 411 harness and a E38 harness/fuse block is the same.
E38's use can-bus, so there are tons more things going on with the whole vehicle harness and fuse blocks. If you used a 411 computer nothing else in your truck would function like normal ever again. You'd have no gauges, no working abs/stabilitrak among other things because all that stuff talks with each other through the PCM itself.
Nothing about the wiring between a 411 harness and a E38 harness/fuse block is the same.
E38's use can-bus, so there are tons more things going on with the whole vehicle harness and fuse blocks. If you used a 411 computer nothing else in your truck would function like normal ever again. You'd have no gauges, no working abs/stabilitrak among other things because all that stuff talks with each other through the PCM itself.
11-19-2018, 11:00 PM
#4
Re-wire the whole truck to a GEN 3 with a gen 3 dash.
Or get super fancy and become a wiring genius to figure out how to make a GEN 3 computer/harness spit out information into a newer style dash. Other than that I know of no way to get what you want, this is not a popular swap for a reason. Maybe someone makes some special wiring harness but it surely can't be cheap. Most guys that do this go full standalone wiring with something like a holley dominator with it's own screen.
You're best bet to make thing a seamless transition is to actually use a GEN 4 engine with GEN 4 wiring harness and fuse block. Along with anything else to make it all function together.
Or get super fancy and become a wiring genius to figure out how to make a GEN 3 computer/harness spit out information into a newer style dash. Other than that I know of no way to get what you want, this is not a popular swap for a reason. Maybe someone makes some special wiring harness but it surely can't be cheap. Most guys that do this go full standalone wiring with something like a holley dominator with it's own screen.
You're best bet to make thing a seamless transition is to actually use a GEN 4 engine with GEN 4 wiring harness and fuse block. Along with anything else to make it all function together.
11-20-2018, 04:33 PM
#7
Except the V6 in the GMT900 trucks run off an E37 which is different from the E38 that the V8 used...
The only Way to run a Gen3 Motor in The GMT 900 truck is to take it apart and swap the crank reluctor wheel to 58x. Then you would need a new front cover to run the correct cam sensor and a new timing chain set. You would also have to drill the block for knock sensors on the side.
It its far to expensive to buy all the parts to try and make something like this work. The best and easy thing to do is to sell what you have and buy a V8 truck.
You can convert your truck to a V8 but you will need to start with the correct engine platform and get the correct wiring harness and ECU for it.
The only Way to run a Gen3 Motor in The GMT 900 truck is to take it apart and swap the crank reluctor wheel to 58x. Then you would need a new front cover to run the correct cam sensor and a new timing chain set. You would also have to drill the block for knock sensors on the side.
It its far to expensive to buy all the parts to try and make something like this work. The best and easy thing to do is to sell what you have and buy a V8 truck.
You can convert your truck to a V8 but you will need to start with the correct engine platform and get the correct wiring harness and ECU for it.
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11-22-2018, 09:22 PM
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Except the V6 in the GMT900 trucks run off an E37 which is different from the E38 that the V8 used...
The only Way to run a Gen3 Motor in The GMT 900 truck is to take it apart and swap the crank reluctor wheel to 58x. Then you would need a new front cover to run the correct cam sensor and a new timing chain set. You would also have to drill the block for knock sensors on the side.
It its far to expensive to buy all the parts to try and make something like this work. The best and easy thing to do is to sell what you have and buy a V8 truck.
You can convert your truck to a V8 but you will need to start with the correct engine platform and get the correct wiring harness and ECU for it.
The only Way to run a Gen3 Motor in The GMT 900 truck is to take it apart and swap the crank reluctor wheel to 58x. Then you would need a new front cover to run the correct cam sensor and a new timing chain set. You would also have to drill the block for knock sensors on the side.
It its far to expensive to buy all the parts to try and make something like this work. The best and easy thing to do is to sell what you have and buy a V8 truck.
You can convert your truck to a V8 but you will need to start with the correct engine platform and get the correct wiring harness and ECU for it.
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