I have an OBD2 gsr that is boosted and I want to build the head but dont know what vavle spring to go with. I am retaing the stock vavles and I am only going to be pushing 400 hp max. Any input would be appreciated!

 

any body ?????

 

how hard you plan on spinning it?

 

You can try super tech valve train, contact Earl Laskey for more information.