Valve springs???

[yamaharaptor350]

If i put a powroll cam, the torque cam will it be good for me to get the valve springs too. I know it says i dont need the springs but i wanna be on the safe side. What do u guys think

http://www.powroll.com/P_YAMAHA_WARRIOR.htm

and what does it mean where it says send your good cam in for core refund??

 

[dswwarrior350]

Well Its called a core charge, the cam upfront has a cost of around 215 if i am correct but then you send in your old cam and you get around 1/2 of that money refunded to you. Installing valvesprings with that cam is required or at least the last time i checked, or maybe that was webcams torque cam. Not sure. But the torque cam is not going to be a huge gain, although noticible, its not going to be a that big. If its anything like my hotcam, which is around a .390 lift ( even thought the duration plays a big factor in this also) It will be a little gain everywhere but it will pull alot harder, longer on topend.

 

[yamaharaptor350]

ok cool, it says u dont need valve springs with the powroll one.... if i get a higher lift cam like a .430 do ya think i would need new valves, would that work with just the basic mods i have. what would be the power increse like??? thanx bro

 

[dswwarrior350]

ok cool, it says u dont need valve springs with the powroll one.... if i get a higher lift cam like a .430 do ya think i would need new valves, would that work with just the basic mods i have. what would be the power increse like??? thanx bro

It would work but you would need the valvesprings for sure. The problem is if you dont install a highcomp piston, with that cam you are going to notice a big decrease in low end power