Cummins Diesel Forum banner

valve springs

805 Views 3 Replies 4 Participants Last post by  DiscountPowerParts1
do i need valve springs for my truck i am making about 50 psi of boos and i need to know if they are needed i am getting a different engine sound after about 2600 rpm and am i folating the valves
1 - 1 of 4 Posts
1 - 1 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.