| The one piece eccentric was made/formed out of 0.200"( approx) steel & hardened for wear protection where the fuel pump arm runs against it. The cam dowel was longer and extends thru the cam sprocket by approx 0.150" to locate it,& the washer that you have now prevents the dowel from coming out.
There would be no need for the 10/32 screw, The outer ring by spinning on the inner reduces wear on the fuel pump arm, If you dont use the outer ring you may reduce the fuel pump stroke to a low enough level that supply may be inadequate at high rpm.
The early eccentric can be found on any small block up to around 1968 I think. To fit it to your motor without changing the dowel get a short piece of 3/8"dia x about 3/8"long round bar turned down to the dowel dia, but leave a small ridge in the middle that prevents it moving fwd thru the eccentric, a small chamfer ground/machined either on the back of the eccentric or front of the sprocket dowel hole will accomodate this.
Jac Mac |