Looking for more power out of your 6.7l? We have seen 30hp+ on 6.7l engines using these valves over OEM 1.3″ valves. After injectors tuning and turbo, this is the most important addition to your high performance build. High performance cams lift the valve faster, optimize valve events and leave the valve open longer at higher lifts to get more air into the engine which raises power potential. Larger valves raise flow at every lift point and allow the maximum flow to be reached sooner and for longer. These valves have been proven to 2700+hp but will work great for you mild build as well.
This kit includes, 24 high temp valves and 24 High quality Tucker seats
Inconel exhaust valve upgrade is recommended for engines over 1250hp
minimum bore 4.210
Recommended seat press is .0065″
works well with 103# springs to 4500 rpm or up to 60 PSI boost or drive pressure. Over 4500 rpm or 60psi we suggest 110# springs