The 73 is longer from the mating surface to the fan flange. You can use the one from the 73 but you have to either move the flange in by abt. 3/8" or shim everything else out by 3/8". Better to use the correct one or move the flange as it is a real pain in the a** to shim everything out. Ray Mick wrote: >What's the difference between the water pump from a 72 304 compared >to a 73 304? >All the parts listings show a different part number between the 2 >years. wanted to know what the difference is. > >Ray Mick >Somewhere in Kansas >"The older I get the faster I was" >72 Javelin/AMX >72 Javelin R/W/B SST > >See my Javelin @ >http://community.webshots.com/album/54361408pRyvWE > >My RWB Javelin@ http://members.cox.net/rmick/MIDAMERICAAMC%20Folder/ >Mid%20America%20AMC/My%20Space.html > >Mid America AMC >http://www.midamericaamc.com > > > >_______________________________________________ >Amc-list mailing list >Amc-list@xxxxxxxxxxxx >http://www.amc-list.com/mailman/listinfo/amc-list > > > > _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list