Speedwerx head?

[EricMichael]

Anyone have any information on this mod? I was looking at a speedwerk viper head. If they are useful what size domes to use?whats the diffrences do in cc?Does it have to do with combustion size or something?thanks guys

Eric

 

[INLINE4]

I have 2 friends with Vipers...Both with pipes etc...One put a Speedwerx head on..No difference if not slower...My one friend with the stock head runs better..