i just picked up a 00 gsr head complete....i want to send it out soon to get build... i want to build a 400+hp...motor...i also want to rev the head to about 8000+rpm's.......i have heard many different things from different people...
what do you guys think....to the people who know....i was thinking skunk2 head...and stock gsr cams....but not to sure...

any info is good...thanks,george

 

anyone else..

 

Id stick some itr valve springs in there with new stock retainers and a good three angle valve job. I'd try to stay with the oem valves which will hold up to 400whp as long as nothing horrible happens with the tuning. If you plan to also add nitrous for whatever reason then I'd consider some SS valves but they are softer than oem and will have a tendancy to mushroom at at the valve tip. Skunk2 valves are notorious for this and I've seen it with my own eyes on a head I was rebuilding for a customer. The valve springs and valves themselves ahad to be cut from the head. I believe Ferrea and maybe even some versions of Supertechs valves have a nitrided tip to prevent this from happening.

 

thanks kj...

 

Well for my build,which will be looking at 450whp on pump gas. I went with Fererra valves, ITR springs and titanium retainers. The GSR head flows plenty well enough for A LOT of hp so no need for the P&P really.

 

the angled valve job on the intake side helps out alot for fuel atomization to mix it with the air better..... id go with a 3 angle valve job on the intake side, maybe some oversized valves, itr springs and titanium retainers, port match the intake manifold to the head if you plan on going with the JG, and just use your stock GSR cams.... that head even with the stock cams can support some serious power.......

 

where is johns response at??