Crank Pulley - Harmonic Balancer

[rdhaug]

Guys,
I have a '62 D100 with a Poly 318. I'm looking to add an air conditioner and need to swap out the crank pulley to a two groove pulley from a single groove. The stock crank pulley on the early truck engines in not a harmonic balancer style, see attached pictures. My question is, can I use a a later style harmonic balancer that have two-grooves and not damage the engine?
- John

 

[bremereric]

That's a good question. Is it internally balanced or externally balanced? I am sorry I don't know squat about a 318 poly.

 

[rdhaug]

I assume the engine is internally balanced, since the stock pulley is not a balancer style. I'm wondering what effect a balancer will have on the engine and will it cause any long term damage. Hope to get more feed back from the group.
- John

 

[Dogsluvtrucks]

I know very little about the poly 318, also. Sometimes folks would remove the harmonic balancer for racing. You could have a modified
one. Try www.allpar.com and maybe the Polyspherical Engine Association on the web.

 

[Moparlee]

No...that's a stock deal.....So is this person still around and what did you end up doing. I've kept one of those pulleys around for ever and just the other day I bought a timing tab from a member on forabodiesonly. I have a 66 Poly 318 that had a damper on it if you still need one....I realize this is old.....but....LOL

 

[7mopar]

Has not been heard from in 2 years. Hope he solved the problem.

 

[yeoman]

Does any one know where I can get this exact pulley for my 318 poly?