I'm about to purchase a Silverado with a 6.0/4l80e combo, and it currently has an On3 turbo kit. I was thinking about swapping the turbo. Just looking for some advice on what turbo to use for a Silverado with stock bottom end 6.0, 4l80e and 3.42 gears. Any advice is appreciated. Thanks.

 

Some more info would be good. What year make model truck? 4wd or 2wd? I have 78/76 On3 because it was cost effective for me but I wouldve rather have gone with a borgwarner around the same size

 

It completely depends on your goals... different turbos will behave drastically different.

What are your max power goals? How important is spool time? How do you typically use the truck?