Can you swap from 4L60E to 4L80E transmission?
Swapping from the 4L60E to the 4L80E is not difficult to do in vehicles that were equipped with both transmissions. Here are the main parts that you are going to need in order to make your own 4L60E to 4L80E swap kit. It’s not the easiest swap to do, and a 4L60E can handle a lot of power on its own. Here’s a good article on the 4L60E vs 4L80E.
Do you need to replace the wiring harness on a 4L60E?
Replacing the entire wiring harness is not easy, convenient, or cost-effective. It is far and away easier to swap in the adapter. The next thing that you’ll need to take care of when making a 4L60E to 4L80E swap kit is the ECM. It’ll need to be ref-flashed to properly control the 4L80E. There are plenty of ways to get the ECM flashed.
When did the 4L60E go out of production?
By the time it started getting phased out of most pickup trucks in 2008, the 4L60E there was no SBC or any other motor from the early nineties in regular production. It was going behind the LS based motors or the longitudinal six cylinder found in the Trailblazer. That’s a lot of time for one transmission to be in production.
Can you use a flex plate on a 4L60E?
You can not reuse your flex plate but you will need to get a special torque converter to engage it properly. Alternatively, you can get the flexplate for a 4L80E and use the 4L80E stock torque converter. The 4L80E is longer than the 4L60E, so you’ll have to get the driveshaft shortened in order to get it to play nice with your vehicle.
Can a 4L80E controller work on an LS engine?
I (Dale Follett) can write up how to make it work on a 4L60e too if theirs enough interest into it. I (Dale Follett) was tired of having my LS engine/4L80e transmission wired up for full manual valve body and wanted it to shift itself automatically like a factory unit.
Do you need PCM for 4L80E GM transmission?
As already stated this is for the 4L80E GM transmission WITH THE UPDATED PASS THROUGH TRANSMISSION CONNECTOR. The only required PCM inputs from the engine is only RPM and throttle position.
How much does a 4L80E transmission control harness cost?
A Microsquirt and 4L80e harness is $450.00, but thats a bit much to swing just for automatic transmission control and I wanted a cheaper option. This is what I came up with, only cost 2 HP tuners Licencing credits and a PCM from the junkyard (Total of $125.00) and some of my time.