6L80 based TJ Wrangler Build
Discussion
Hi,
I am looking to put a GM V8 into my TJ Wrangler. There are plenty of Gen 3 builds out there but they typically mate to the 4LXX tranny. Nothing wrong with this tranny, but the 6 speed has a mighty 1st gear ratio that will allow me far better off road performance and on road driveability with 33 inch tyres.
Two questions:
1) are there any good sources in the uk for GM engines? Given my Jeep is rhd, I could try to import from AUS, but that will get expensive
2) are there any uk based shops that have done Gen4 and 6L80 based builds? Because the tranny and engine talk, the US based forums seem to regard this as materially more difficult than Gen 3 based. Holds
Help much appreciated
I am looking to put a GM V8 into my TJ Wrangler. There are plenty of Gen 3 builds out there but they typically mate to the 4LXX tranny. Nothing wrong with this tranny, but the 6 speed has a mighty 1st gear ratio that will allow me far better off road performance and on road driveability with 33 inch tyres.
Two questions:
1) are there any good sources in the uk for GM engines? Given my Jeep is rhd, I could try to import from AUS, but that will get expensive
2) are there any uk based shops that have done Gen4 and 6L80 based builds? Because the tranny and engine talk, the US based forums seem to regard this as materially more difficult than Gen 3 based. Holds
Help much appreciated
Thank you for this, I have looked around and found some interesting things:
1) you can get a paddle shifter / manumatic for the 4L60, which opens a wider more cost effective array of potential engines like the LS1
2) looking at AUS eBay, you can get GM L76 plus 6L80e at reasonable prices. It actually just clicked that as I am an Aus citizen and have lots of friends out there, I could potentially import this more cheaply as a one off
I will call the contact above to get his thoughts on the transplant differences between Gen 3 -'d Gen 4 engines. Would also like a ballpark cost estimate on it
1) you can get a paddle shifter / manumatic for the 4L60, which opens a wider more cost effective array of potential engines like the LS1
2) looking at AUS eBay, you can get GM L76 plus 6L80e at reasonable prices. It actually just clicked that as I am an Aus citizen and have lots of friends out there, I could potentially import this more cheaply as a one off
I will call the contact above to get his thoughts on the transplant differences between Gen 3 -'d Gen 4 engines. Would also like a ballpark cost estimate on it
Psimpson7 said:
I have a Gen4 and 6l80 almost done in a Defender.
I am using a speartech standalone loom setup, with the tapup/down functions enabled on a seperate switch, and a lokar shifter (10" one for a 4l80)
http://www.speartech.com/product_p/58x6l-hp.htm
It may be worth having a read of this thread of mine.
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
There are a number of issues you may hit which you may not have thought of especially if you use a car based engine and box, including the fact that the auto output is just a 3bolt flange for a tailshaft. You will need to convert it to a 4wd output to be able to fit a Transfer case.
Your thread is invaluable, exactly what I am considering doing except in a Jeep. Do you have the details of the conversion parts to take the 6L80e from 2wd to 4wd. If I could import the L76 package from AUS essentially as you have done it, that would be very cost effectiveI am using a speartech standalone loom setup, with the tapup/down functions enabled on a seperate switch, and a lokar shifter (10" one for a 4l80)
http://www.speartech.com/product_p/58x6l-hp.htm
It may be worth having a read of this thread of mine.
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
There are a number of issues you may hit which you may not have thought of especially if you use a car based engine and box, including the fact that the auto output is just a 3bolt flange for a tailshaft. You will need to convert it to a 4wd output to be able to fit a Transfer case.
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