Originally Posted by briansansone
title says it all.
How do I break in my chevy 4.3 vortec ( 2001 with direct fuel injection update ).
An article on rebuilt engine start-up is here
. You have roller lifters, so you can skip the 20-30 minute break in at 2000-plus rpm because a roller cam/lifters do not require breaking in like flat tappet cams and lifters.