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Old 05-15-2017, 06:46 PM   #1
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Join Date: Sep 2016
Location: Redington Beach
Posts: 854
4l80e compatibility with 4.8/5.3

So ..... if you have a 4.8/5.3 engine from a truck/van that came OEM with a 4l60e ......

Couple it with a 4l80e from a different truck/van...

Does it all bolt right up - I read somewhere about having to get a custom convertor and/or spacer made with right bolt holes for flexplate ......but it didnt explain why. I know you need it if the engine is a "true" LS (LS1 example)
But unsure if not a true LS - like 4.8/5.3/6.0.

Also that the 4l60e and 4l80e same/different bolt pattern ?

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