'59 Plymouth Forum

Hi there, can anyone tell me if the crank pulley/balancer on a 313 poly is the same on a 318 poly? I have a 59 plymouth fury with a 313 poly. The crank pulley is a little warped and when running stretches the belts. I ordered a balancer from a 318 poly balancer and the pulley bolts onto the balancer. The original pulley looks like a hub with no balancer. Will I do any damage if I put the 318 pulley/balancer on the 313 poly? Is there an internal balancer in the 313 poly?

If anyone out there has a 313 poly or knows about them I have a few other questions and I would like to know more about them.

Thank you,

Kyle

Kyle, The pulley/dampener are the same. The later dampener with bolt on pulley should also work. there could be a problem with belt alignment so check measurements including pulley diameter. also both engines were internally balanced. I have done the same change but on a truck engine. I did have a timing mark issue, I ended up timing off #3

Thanks for the info. What worried me was the actual weight difference between the "hub/pulley" like the one on my picture and the "7 pound dampener with the bolt on pulley style which is the other option, if I do that the degrees indicator for the timing has to be removed from the timing cover. The bigger (7 lbs) dampener will hit it. Another concern that I had was the internal balance issue, thanks for clearing that up. I will give that a try.

Kyle