Originally Posted by red58
the double acting pump was an accessory, not a standard item

Bill
It is interesting that GM shows a standard combination fuel and vacuum fuel pump in the 1958 Specifications Manual; however, in 1959 the combination fuel and vacuum fuel pump is shown as standard only on the 235 engine?

The dual action fuel pump had different names, but it was RPO-340 in many years (Regular Production Option - factory installed). Most likely it was also available as an accessory.

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.