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Mike 57

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Posts posted by Mike 57

  1. I would guess that the lower domes were installed so the engine would run on the lower quality fuel. If you actually find the taller domes you may run into drive ability issues. 10.5 to 1 with cast iron heads is not a fuel friendly compression ratio.

     

    Camshaft number = #3874872

    Camshaft Intake duration @ .050" == 196°

    Camshaft Exhaust duration @ .050" = 196°

    Camshaft lift - Intake == 0.398"

    Camshaft lift - Exhaust = 0.398"

    @ 114° LSA

  2. I really doubt that you could have cracked a piston turning it over by hand.

    I would continue to adjust the valves and then run a compression test, a leak down would be better if you can.

    What procedure are you using to adjust valves?

  3. Do you know what the casting number of the current heads are? It would be good to know to determine the approximate CCs of the chamber. Were the chambers CCed during the build? Do you have the piston part number? This info would help to determine final compression.

  4. I have a few doubts about the gen 6 set up working. As Mike questioned, the provisions to bolt down the plate and the way the way the lifter bores are machined flat at the top on the late roller motors. The cam is retained by a plate, you could probably use a button. You could probably make it all work but it would probably cost more than just the price of the cam. I think a set of retrofit rollers would be the way to go.

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