Re: connecting rod applications

Posted by Owen_Dyneto On 2010/3/5 9:38:50

The #s found on connecting rods are typically forging numbers and not part numbers; forging numbers are not listed in the parts books and I don't know of a cross-reference for them so I think identifying them will prove difficult. I've got some stray rods in the parts bin and will post again here if I find any matches.

If we assume for the moment that forging numbers, like casting numbers, are in close numeric proximity to their final parts numbers, your rods would seem to date to about 1936 and earlier. And don't forget for the senior eights, rods 1,3,5 &7 were different that 2,4,6 and 8 in most (all?) of those motors.

PS - are the rod caps finned or plain? Poured bearings or machined for shells? Center-to-center length? Main journal diameter? Center to center on the 320 engines is about 10-15/16, measured crudely.