Severe duty valves?

[ventura74]

Has anyone used Competition Products severe duty valves? I'm looking at them for a street strip setup, SB Chevy around 600 HP or so. I've used Herbert's several times in the past with no problems just looking for another affordable option, Thanks

[Carnut1]

There is some issue with affordable and 600 hp. Buy quality valves! Save up! You will be happier! I am not saying anything negative about the valves you are asking about. I learned a long time ago that quality costs! The only way I would do it.

[wyrmrider]

What's the application?
what's critical exhaust like for turbo, boat, truck
what heads stock or special length?
ls valves?
what seats- stock induction hardened or high nickel/ sintered like the good dura bond??

[ventura74]

What's the application?
what's critical exhaust like for turbo, boat, truck
what heads stock or special length?
ls valves?
what seats- stock induction hardened or high nickel/ sintered like the good dura bond??

400 SB Chevy SHP block solid roller 12.25 comp. tunnel ram 750 Holley HP's RHS 235cc heads valves need to be +.200 for spring height. Sending heads out to be done but want to supply valves and keepers.

[ventura74]

I was looking at Ferrera 6000 series but only see intake +.200 and exhaust only +.150 ??

[MadBill]

There's always lash caps...

[Keith Morganstein]

use +.050" locks on the exhaust valves to get your spring height or call Brian at Dakota parts warehouse for custom length Ferrea valves (at a reasonable cost)

http://www.dpwferreavalves.com

[ventura74]

What about PBM competition valves? Anyone use them?