Don't know if the Z-11 is included in this but seems likely that if not same as 63 production then same as second design 64. 65 had a different shaft and big bearing. Overall length of the bearing and shaft assemblies is 4.688" for 58-early 64 and 5.020" for second design 64-65.So are Z-11 and Edelbrock pumps the same length as the larger bearing later model water pumps for pulley line up?
JeffDon't know if the Z-11 is included in this but seems likely that if not same as 63 production then same as second design 64. 65 had a different shaft and big bearing. Dimensions from face of hub to engine mounting face is 4.688" for 58-early 64 and 5.020" for second design 64-65.
Cecil, I'm confused, "Dimensions from face of hub to engine mounting face is 4.688" for 58-early 64 and 5.020" for second design 64-65." This does not match your chart??? The dimensions Skip Fix gave are in there and I rough measured 2 stock pumps at 5-1/2ish.
You're right. I got that reference from a Canadian Parts Catalogue #651 December 1964 on GM Parts Wiki and I wonder if it is metric, I'll have to check that out.Jeff