Please remember the golden rules set by General Motors, they designed the z22se and do know what they are talking about.
CONNECTING RODS
GM recommend that the connecting rods be upgraded because stock Z22SE / L61 rods are not designed for power levels over 250 hp.
PISTONS
The stock Z22SE / L61 pistons have been tested to power levels approaching 300 hp by GM.
However these pistons should be replaced with a stock forged-type piston for applications over the 250 hp level.
JE,...
The Golden Rules - break at your own peril
CONNECTING RODS
GM recommend that the connecting rods be upgraded because stock Z22SE / L61 rods are not designed for power levels over 250 hp.
PISTONS
The stock Z22SE / L61 pistons have been tested to power levels approaching 300 hp by GM.
However these pistons should be replaced with a stock forged-type piston for applications over the 250 hp level.
JE,...
The Golden Rules - break at your own peril