I helped my buddy today at his shop. We did the complete top end ( blown head gasket ) on a 1999 SSEI with an L67.
I noticed a HUGE difference in the valve train components from my 1992.
I saw rollers and better rocker arms. Whats the deal here ?
I know the later years had upgrades but I didin't realize it was to this extreme.
EVERY valve component appeared to be an upgrade over my 1992 L67.
What are the differences ? Will they swap out ? I also noticed the 1999 had more ..
than mine after reassembly. A little less low end and MUCH more top end.