I have a pretty old heads/cam package (5 yrs.) and am looking to upgrade. Unfortunately, I need to be concerned about emissions so I'm wondering how far I can go while passing the sniffer test.

I currrently have an ARE heads/gm846 setup along with SLP shorties and 3200 converter. The car is still full weight (3660-3680 raceweight) and I really don't want to remove too much of the creature comforts. The car has run pretty consistent 12.0s in the summer and 11.8s in good air over the past couple years.

I'm ready for a change and would like some ideas. What are you guys running with your setups and what kind of setups do you have? I've heard that with more cubes you can get away with a little more cam while still passing emissions.

 

Hey i also live in MD and i passed emissions with my LT1 383CI 219 219 525 525 lift valve job and pocket ported heads PCMFORLESS tune 2 high fllow cats and passed with flyin colors.

 

I know those lingenfelter cams are supposed to be real clean. My cam has a bit more duration (222/230) which is what's hurting me.

 

my buddy, I'm sure he'll chime in here, will pass emissions on his built 355 setup with the cc503 cam and ported heads. He made 387rwhp too...