4 Groove Pulley To Fit This...

[csx4590]

It's a little blurry and one of the bolt holes is blocked by the chain but this is the harmonic balancer/damper on my 440 engine. I need a 4 groove pulley to fit it. I have one from my 383 that does not work. What is/are the differences between a 383 and 440 pulley? Thanks for any info...   

[A383Wing]

the only difference is on one pulley, the holes are not symmetrical all the way around, just find the one that does not line up and elongate it to fit the crank

[fy469rtse]

Just in case your not sure to do this or not , won't hurt to slot one hole , had this problem myself many times ,
Just the difference between pulleys for cast and steel crank shaft bolt holes and different harmonic balancer s ,
It won't effect any balance issues by doing this , 

[Moparparts]

I have a lot of different pulleys available PM or e-mail me some measurements and i should have what you need