Balancer question....

[CudaJimmy]

I'm freshening up an 83 model 360 for my 16 year olds 73 Charger (he had a 68 Dart GTS, but wanted a Charger....sad I know....). We are keeping all the original pulleys and brackets, but I installed the balancer (360) on the motor last night, and the crank pulley won't fit. I've never run across this before. I'm assuming I can use the 318 balancer on it (being a 73 model), is there any reason I WOULDN'T be able to?

 

[66dartgt]

No ! a 360 balancer has a counter weight built into it for external crank balancing purposes. A 318 is a neutral balanced engine (ie internally balanced crank). The two cannot be interchanged.

What aspect of the pulley fitment is causing the problem ? I have NEVER seen an issue such as this. The only time there is a problem is when using a pre 72 pulley on a post 73 motor. The older pulleys had one of the 6 bolt holes offset a small amount. All that's needed to make it work - is file the offending hole a little with a round file to make it fit.

 

[CudaJimmy]

No ! a 360 balancer has a counter weight built into it for external crank balancing purposes. A 318 is a neutral balanced engine (ie internally balanced crank). The two cannot be interchanged.

What aspect of the pulley fitment is causing the problem ? I have NEVER seen an issue such as this. The only time there is a problem is when using a pre 72 pulley on a post 73 motor. The older pulleys had one of the 6 bolt holes offset a small amount. All that's needed to make it work - is file the offending hole a little with a round file to make it fit.

That's the exact problem I'm having, I just didn't know for sure how to deal with this as I've never run into it. I guess now that you mention it, this is the first post 73 motor I've built. I suppose it's possible that my original engine has the pre 73 pulley on it. Thanks for clearing it up for me. I'll move forward with mister rat-tail in hand.