LSA/6L90 Alpha swap
#1
LSA/6L90 Alpha swap
I'm getting ready to start building my brothers H3 Alpha and I have some questions for you guys.
First off I'd like to say that I'm not new to swapping engines and I've done a lot of research so far but can't seem to find some information. I do realize that this is going to be a huge project, and will cost a lot of money so no need to send out the warnings.
I'm building the Alpha instead of selling it and buying an I-5 basically because I don't want to deal with the headache of it. Plus the paint matches his Harley and the leather is in really good shape.
The reason behind going LSA instead of LS3. I've been doing the research for this project for about 6 months. I want this to be a torquey fun to drive engine and since I can guy a low mileage LSA pull out for about the same amount of money as a crate LS3 I figured why not. Since I won't have a shop install the engine I wouldn't be able to have the warranty.
I'm still trying to figure out if I will run the 6L80 or 6L90 (Really haven't got the chance to measure around and see how short the driveline would end up with the 90) but I want the 6 speed and don't want to be going through 4L65s every other year. I will be keeping it DS drop for the transfer case for the upcoming axle swap. Since it will be a drivers side drop it will be easier to get a HP housing.
My questions are:
Is there any demand for an Alpha engine/trans/transfercase?
I know that the Alphas have a steel diff housing for the front so are those also desirable?
Is the BCM going to be an issue with running the 6L80-90? from what I've read I can flash the ECU with the files to run the engine and transmission (with the proper wiring harness) but with out the buttons for the TU/TD is this going to cause a HUGE headache for me? I'm trying to not have to buy an interface basically.
First off I'd like to say that I'm not new to swapping engines and I've done a lot of research so far but can't seem to find some information. I do realize that this is going to be a huge project, and will cost a lot of money so no need to send out the warnings.
I'm building the Alpha instead of selling it and buying an I-5 basically because I don't want to deal with the headache of it. Plus the paint matches his Harley and the leather is in really good shape.
The reason behind going LSA instead of LS3. I've been doing the research for this project for about 6 months. I want this to be a torquey fun to drive engine and since I can guy a low mileage LSA pull out for about the same amount of money as a crate LS3 I figured why not. Since I won't have a shop install the engine I wouldn't be able to have the warranty.
I'm still trying to figure out if I will run the 6L80 or 6L90 (Really haven't got the chance to measure around and see how short the driveline would end up with the 90) but I want the 6 speed and don't want to be going through 4L65s every other year. I will be keeping it DS drop for the transfer case for the upcoming axle swap. Since it will be a drivers side drop it will be easier to get a HP housing.
My questions are:
Is there any demand for an Alpha engine/trans/transfercase?
I know that the Alphas have a steel diff housing for the front so are those also desirable?
Is the BCM going to be an issue with running the 6L80-90? from what I've read I can flash the ECU with the files to run the engine and transmission (with the proper wiring harness) but with out the buttons for the TU/TD is this going to cause a HUGE headache for me? I'm trying to not have to buy an interface basically.
#2
I'm getting ready to start building my brothers H3 Alpha and I have some questions for you guys.
First off I'd like to say that I'm not new to swapping engines and I've done a lot of research so far but can't seem to find some information. I do realize that this is going to be a huge project, and will cost a lot of money so no need to send out the warnings.
I'm building the Alpha instead of selling it and buying an I-5 basically because I don't want to deal with the headache of it. Plus the paint matches his Harley and the leather is in really good shape.
The reason behind going LSA instead of LS3. I've been doing the research for this project for about 6 months. I want this to be a torquey fun to drive engine and since I can guy a low mileage LSA pull out for about the same amount of money as a crate LS3 I figured why not. Since I won't have a shop install the engine I wouldn't be able to have the warranty.
I'm still trying to figure out if I will run the 6L80 or 6L90 (Really haven't got the chance to measure around and see how short the driveline would end up with the 90) but I want the 6 speed and don't want to be going through 4L65s every other year. I will be keeping it DS drop for the transfer case for the upcoming axle swap. Since it will be a drivers side drop it will be easier to get a HP housing.
My questions are:
Is there any demand for an Alpha engine/trans/transfercase?
I know that the Alphas have a steel diff housing for the front so are those also desirable?
Is the BCM going to be an issue with running the 6L80-90? from what I've read I can flash the ECU with the files to run the engine and transmission (with the proper wiring harness) but with out the buttons for the TU/TD is this going to cause a HUGE headache for me? I'm trying to not have to buy an interface basically.
First off I'd like to say that I'm not new to swapping engines and I've done a lot of research so far but can't seem to find some information. I do realize that this is going to be a huge project, and will cost a lot of money so no need to send out the warnings.
I'm building the Alpha instead of selling it and buying an I-5 basically because I don't want to deal with the headache of it. Plus the paint matches his Harley and the leather is in really good shape.
The reason behind going LSA instead of LS3. I've been doing the research for this project for about 6 months. I want this to be a torquey fun to drive engine and since I can guy a low mileage LSA pull out for about the same amount of money as a crate LS3 I figured why not. Since I won't have a shop install the engine I wouldn't be able to have the warranty.
I'm still trying to figure out if I will run the 6L80 or 6L90 (Really haven't got the chance to measure around and see how short the driveline would end up with the 90) but I want the 6 speed and don't want to be going through 4L65s every other year. I will be keeping it DS drop for the transfer case for the upcoming axle swap. Since it will be a drivers side drop it will be easier to get a HP housing.
My questions are:
Is there any demand for an Alpha engine/trans/transfercase?
I know that the Alphas have a steel diff housing for the front so are those also desirable?
Is the BCM going to be an issue with running the 6L80-90? from what I've read I can flash the ECU with the files to run the engine and transmission (with the proper wiring harness) but with out the buttons for the TU/TD is this going to cause a HUGE headache for me? I'm trying to not have to buy an interface basically.
#3
We have been in the process of doing a 6.0L/ 6l90 swap since the summer...not easy and if I did it again I would probably have done a 4l80 swap if the length cleared the torsionbar crossmember. The 6l90 is too long and will push the factory transfercase well into the torsionbar crossmember which is a structural crossmember welded to the frame.
#4
Sorry no pictures. Its not a matter of it coming close, a good couple inches of the factory transfercase would be in the crossmember. Since you are running a driveside drop you will be using some other transfercase so its a moot point
#5
I'm getting ready to start building my brothers H3 Alpha and I have some questions for you guys.
First off I'd like to say that I'm not new to swapping engines and I've done a lot of research so far but can't seem to find some information. I do realize that this is going to be a huge project, and will cost a lot of money so no need to send out the warnings.
I'm building the Alpha instead of selling it and buying an I-5 basically because I don't want to deal with the headache of it. Plus the paint matches his Harley and the leather is in really good shape.
The reason behind going LSA instead of LS3. I've been doing the research for this project for about 6 months. I want this to be a torquey fun to drive engine and since I can guy a low mileage LSA pull out for about the same amount of money as a crate LS3 I figured why not. Since I won't have a shop install the engine I wouldn't be able to have the warranty.
I'm still trying to figure out if I will run the 6L80 or 6L90 (Really haven't got the chance to measure around and see how short the driveline would end up with the 90) but I want the 6 speed and don't want to be going through 4L65s every other year. I will be keeping it DS drop for the transfer case for the upcoming axle swap. Since it will be a drivers side drop it will be easier to get a HP housing.
My questions are:
Is there any demand for an Alpha engine/trans/transfercase?
I know that the Alphas have a steel diff housing for the front so are those also desirable?
Is the BCM going to be an issue with running the 6L80-90? from what I've read I can flash the ECU with the files to run the engine and transmission (with the proper wiring harness) but with out the buttons for the TU/TD is this going to cause a HUGE headache for me? I'm trying to not have to buy an interface basically.
First off I'd like to say that I'm not new to swapping engines and I've done a lot of research so far but can't seem to find some information. I do realize that this is going to be a huge project, and will cost a lot of money so no need to send out the warnings.
I'm building the Alpha instead of selling it and buying an I-5 basically because I don't want to deal with the headache of it. Plus the paint matches his Harley and the leather is in really good shape.
The reason behind going LSA instead of LS3. I've been doing the research for this project for about 6 months. I want this to be a torquey fun to drive engine and since I can guy a low mileage LSA pull out for about the same amount of money as a crate LS3 I figured why not. Since I won't have a shop install the engine I wouldn't be able to have the warranty.
I'm still trying to figure out if I will run the 6L80 or 6L90 (Really haven't got the chance to measure around and see how short the driveline would end up with the 90) but I want the 6 speed and don't want to be going through 4L65s every other year. I will be keeping it DS drop for the transfer case for the upcoming axle swap. Since it will be a drivers side drop it will be easier to get a HP housing.
My questions are:
Is there any demand for an Alpha engine/trans/transfercase?
I know that the Alphas have a steel diff housing for the front so are those also desirable?
Is the BCM going to be an issue with running the 6L80-90? from what I've read I can flash the ECU with the files to run the engine and transmission (with the proper wiring harness) but with out the buttons for the TU/TD is this going to cause a HUGE headache for me? I'm trying to not have to buy an interface basically.
Im running a cammed LS3 at 485 tq and flooring it from a 20 mph rolling start is extremely hard to control (with 35s and a 4l60e). I cant imagine running 65 more tqs coupled with that 1st gear of the 6l80e.
I currently wait for my truck to shift to 2nd before I give it more than 50% throttle. I am planning on getting 37s once my 35s wear out and I am hoping the reduction in gearing will be enough to allow the truck the handle better in 1st.
whatever you do, keep us posted. It will be one hell of a truck!