4l80e trans

[hotrod1]

I have a 56 and am putting a LQ4 and was wondering if there would be any issue squeezing a 4L80E trans in there? Feedback please.

[OKGMC4]

I had a 6.0 4l80e and sold it to get my 5.3 4l60e. The 4l80e is about 75 lbs heavier and WAY bigger. I would have had to cut a tunnel for it. The 60 fits under the stock floor. I also has a much deeper first gear and a way better O/D ratio. I know the 80 is stronger but you should consider the pros and cons of it.

[dicer]

If TH400's and 350s fit it should fit. To use an electronic transmission you will need an aftermarket controller. Thats a 700 plus dollar item I think, maybe there are better deals.
Maybe the 4 speed trans floor plate maybe needed??

[hotrod1]

Hey OKGMC4. Is it because you had to mount your engine higher because of the corvette install?

Has anyone put a 4L80e in a tri five?

The 4L60e can only handle a certain horsepower. We are going for the 525 to 650hp range in two stages (of time and build) and want to make sure that we dont destroy something along the way. I hear that the 80 will handle that with out modification and is a good financial option.

[Nsanehotrodz]

Check out my build thread. DeWayne

[hotrod1]

are u talking about the 52? Drool........................

[OKGMC4]

Originally Posted by hotrod1

Hey OKGMC4. Is it because you had to mount your engine higher because of the corvette install?

Has anyone put a 4L80e in a tri five?

The 4L60e can only handle a certain horsepower. We are going for the 525 to 650hp range in two stages (of time and build) and want to make sure that we dont destroy something along the way. I hear that the 80 will handle that with out modification and is a good financial option.

You are probably right, mine is higher. For me I plan on running stockish numbers (around 300) and don't need the beef of the 80. Plus, my 6.0 was a 99 iron head version. Those heads and the 80 trans meant LOTS more weight for me. A 60 with aluminum heads and all my C4 suspension means HUGE weight savings. My hope is that this truck will have a good power / weight ratio despite a nearly stock engine.

[wyomech]

I am running a lq9 with a 4l80e and had plenty of room,but I also have a chevelle front suspension. I am also using the factory ecm and had it reprogramed to shift the 4l80 and I am very happy with the way it drives and drive it daily to work.I am running 3.90 gears which seem to be a good compromise and my best 1/4 is 14.60 but that is with street tires and spun a lot.

[hotrod1]

hey Wyomech

What year 4l80e did you go with? Did you have to use any converters or any type or was it the year of your engine?

[wyomech]

I bought a used trans off of craigslist and was told it came out of a 2001 1ton truck that was 2 wheel drive.It is hooked to a 2004 6.0 out of a escalade, there are 2 different flex plates so make sure you have the right one,one is flat and uses a spacer with longer bolts and the other is dished in the middle.The stock converter is huge and must weigh about 75 lbs so using a 10 inch saves probably 20 or 30 lbs,I am running a Circle D that stalls about 2300 but it was a big improvement over the stock one.I got a lot of info off of the site ls1truck.com

[solidaxel]

Originally Posted by OKGMC4

I had a 6.0 4l80e and sold it to get my 5.3 4l60e. The 4l80e is about 75 lbs heavier and WAY bigger. I would have had to cut a tunnel for it. The 60 fits under the stock floor. I also has a much deeper first gear and a way better O/D ratio. I know the 80 is stronger but you should consider the pros and cons of it.

.............. X - 3 !!

Stick with what works, a 4L80E fits, I have one in my 53 and am loven it !!!

[hotrod1]

hey Wyomech. Tell me about converters. The one u mentioned costs between 700 and 900?

How much of a difference did it make? Tell me more.

[solidaxel]

Originally Posted by solidaxel

.............. X - 3 !!

Stick with what works, a 4L80E fits, I have one in my 53 and am loven it !!!

I had my finger in the wrong hole it is a 4 L 60 E
I just found my error!