Quote:
Originally Posted by R Leo
Cam or no cam, the 617's biggest challenge is that both holes are on the same side of the head. Hard to overcome that.
60x are such a totally different breed of cat: holes on both sides of the head, long intake runners, stupid aluminum oil pan, etc...some of the changes actually made a better engine.
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Now Randy, did you throw me this softball just to allow me to mention Gravely Two wheeled walking tractors which have the same configuration that INDY 500 cars of the 1950 WON so often ? ( Offenhauser )
http://en.wikipedia.org/wiki/Offenhauser
Old Gravely engines had huge valves exactly on opposite sides of the head and long stokes ( relative to the bore ) for high torque at low rpm production .One of our members is a descendant of Ben Gravely.
http://en.wikipedia.org/wiki/Two-wheel_tractor
http://www.youtube.com/watch?v=Y-TqhL41clk
More than 50 attachments were available for them.. here is a mean saw mounted on the front... only four bolts to change most implements..
http://www.youtube.com/watch?v=yIaS6t7pVFI