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I took the head off for #5,6,7,8. GUESS what! No Marks on Piston or Valves. I believe that while I was breaking in the Cam @ 2000 rpms if the valves hit there would be marks on the piston and a bent valve. I needed to remove the head for my own sanity. Now I feel better. So I guess I will put it bac to gether together.
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.