i have a 1996 camaro z28 with a cold air intake and a slp catback exhaust. I'm porting my heads in the spring and doing head work. Is there anything else in the mean time i can do as far as bolt-ons besides headers?

 

throttle body, 1.6 rockers, you probably want to have your intake ported to match the heads, but that would be later, rear gears will help alot

 

Changing the TB is worthless on a near stock engine.

Add 1.6 ratio rockers, do a TB coolant bypass and you'll see maybe 12-15 horsepower.....

 

If its an auto, a converter will help also a shift kit...160 thermostat.