i have an 89 iroc z28 with5.7 engine that i bought to restore. it has alot of components missing but i have fixed alot of the problems. it is missing the pcv and i need to know what side valve cover does it go to and where does it connect. the other valve cover has a grommet and it is missing a component. what is it and where does it connect. also what is the timing set up for this engine. right now it idles rough and turns off i let go of the gas pedal. thanks for your help.

 

on my iroc pcv is on the drvr side but theres another not pcv on the pssngr side that looks the same as much as i can see the psngr side 1 is more like a free flow component

 

ok the pcv on the driver side goes into a med small vacuum port on the rear driver side of the bottom intake and the non pcv psngr side passive air component goes to the top large vacuum port on the psngr side of the throttle body itself timing is 6b at 700 rpms before u adjust timing check ohm resistance on all injectors should be around 16.5 ohm all and disconnect the esc connector to get real non comp advanced timing also before u go as far as timing u might want to check around about setting or adjusting tps and minimum idle speed before goin to timing timing is usually the first of all these setups also may or may not have to put comp into service mode while setting up....