Im confused.

Dont the 5.3's come with a 4l80E tranny? This is what i know from 2003 when I purchesed the truck. 4.8 came with the 60E and the 5.3 and up came with the 80E.


From what im reading and understanding is, GM stuck a 4L60E under the NBS 5.3. Is this Correct?


How can i tell what tranny im using?



Thanks guys.

 

I moved your thread to the GM drivetrain section for you for better respnse.

No the 4L60e/4L565e came with ALL 1500 series trucks, the SSS having the improved 4L65e as I recall.

 

AFAIK, the 5.3 never came with a 4l80e

 

intresting. When i bought the 03 Silverado, it came with the 4l60E, and when i searched, from the responces i got 5.3 came with the 4l80E and this was on ls1tech back in 03.


I guess ive been schooled. Thanks guys.

This is why everyone says the tranny needs to be upgraded to handle a S/C and a Turbo.

These tranny's where piece of **** from way back. The 80E was supposed to be the head honcho.


Oh and one more questions before i start the search.


Scale of one to ten. How easy is it to upgrade to a 80E. 1 being the easiest.

 

Don't know first hand, let's see....J's01Silverado, F8LZ71, and a whole bunch of other guys have done the swap.

 

I just did the swap its to hard
https://www.performancetrucks.net/fo...ighlight=4L80E

 

The code on the label in your glovebox you will find is "M30".

https://www.performancetrucks.net/fo...d.php?t=359962

 

about a 3, its very straightforward and there are a ton of write-ups about it.