4l60e to 80e

[Seminole Life]

I'm in the process of rebuilding my 96 c1500. It had a 4.3 in it but I'm swapping in a 454 and 4l80e, and I know next to nothing about transmissions so I was wondering what all was necessary in putting in the 4l80e and making it work

 

[Tzfbird]

I think you only need to repin the connector. If you search for the pinout diagrams I think there are only a few that need switched around within the connector. Otherwise they sell conversion harnesses online for 75-100. How are you planning on fueling the 454?

 

[98chevy2500SS]

I asked my dad about this, and he said that the frames are different between and half ton and 3/4 ton, therefore the transmission won't fit. The transmission is bigger and is different than the 4L60E and requires some work to convert. It won't be a simple plug-n-play. But I could be wrong though as I am not experienced with this sort of stuff.

Here's a page I saw about this: http://www.superchevy.com/how-to/transmission/1307-4l80e-transmission-swap/

I was thinking about doing this someday to my truck for more durability and strength.

 

[Randeme Prine]

It will fit move trans Camembert back like two inch just don't the swap on a 98 tahoe

 

[98chevy2500SS]

Ok learned something new today!

I swear, I learn more from you guys than school.

 

[Seminole Life]

I think you only need to repin the connector. If you search for the pinout diagrams I think there are only a few that need switched around within the connector. Otherwise they sell conversion harnesses online for 75-100. How are you planning on fueling the 454?

Well after doing some research I think I may go with a th400, since it'll be primarily a fun truck and I won't necessarily need overdrive and it's not electronic, the less wires the better. But what do you mean on how do I plan on fueling the 454, are you wondering which carburetor or how I'm gonna get it from the tank to the engine?

 

[98chevy2500SS]

I think he is meaning, why would you go from a fuel economy 4.3 to a gas guzzling 454 <-- that's how I interpreted it.

 

[Seminole Life]

I think he is meaning, why would you go from a fuel economy 4.3 to a gas guzzling 454 <-- that's how I interpreted it.

Oh, well because straight axle big block that's why lol

 

[Supercharged111]

Why in God's name would you abandon the 4L80 in favor of the TH400? The 4L80 swap is very well documented and does not require rocket appliances to accomplish.

 

[98chevy2500SS]

Yeah I would rather have the technology and better upgraded performance of the 4L80E rather than a th400, even though the th400 were good transmissions.