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Here are some shots of my heads & the Jones Cams ( Stage 3 turbo ) installed. Notice how large the base circles are. They gently open the valves rather than stressing them like the SE parts. They also use much less shim to accomplish proper lash. There are shots of both the intake and exhaust sides. This was done CNC by Wegner Engineering who did all of the Destroyer program heads. I had Scott Fitzgerald do the valve spring setup for me. The valves are 2mm oversize so I was unable to use the pieces I bought from Jones. They also used a single groove keeper so I had to get new springs and keepers ( beehives / tool steel). You need to ask your head guy which parts he needs before you buy all your parts. Final shot is of the combustion chamber showing valve clearances.. No flow bench numbers, but I would hazard 20-25% increase.
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