what factors would you need to consider when choosing a cam for a turbo gsr motor? the motor is build with forged internals and sleeved. the turbo would run about 10-14 psi. what kind of cam should I get for it?

 

I would choose a cam ground for turbo applications. A lot of the cams that are advertised with big HP gains come from high lift, high overlap, meaning the intake and exhuast valves are open at the same time, for longer. This is better for NA because the exiting exhaust helps pull the intake charge in. When you pressurize the intake though, any overlap is going to cause you to blow your exhuast gas out, and blow your intake charge out the exhaust as well. A good turbo/supercharged cam is going to have high lift, and very little overlap. I believe both Crower and Crane make turbo specific cams. Worth checking both of those out. Stay away from NA cams though. You'd very little if anything from runnning them.

 

thanks, sounds like some good info:thumbup:

 

actually as it turns out, GSR cams really good for high boost turbo applications. ive heard of people running tens on their stock gsr cams. if you were to go with type-r cams or something wild like that, you would actually lose power though. just stick with your GSRs, unless your really itching to spend money, in which case you should get some skunk2s or something which are made specifically for forced induction applications.

 

I second that. I've seen lots of crazy turbo GsR's and Hatchies, all running stock GsR cams, another setup which I heard works well is a type r intake cam, and a gsr exhaust cam, with some gears to adjust the overlap!

 

Okay then what's a good cam for N20???