I am currently assembling a 1968 440 block with new parts that I bought from PAW (when they were still in business in 2007) for my 1972 Charger. Here are the specs: .030 over; steel crank; Speed Pro Pistons Part # L2295F030.

The question that I have is whether or not the rods I have are the heavier 440-6 pack rods or not.

This motor will be a six-pac set up, but how was this particular motor was specced out? Original Six Pack motors, I'm told, were externally balanced whereas the regular 440 was internally balanced. Should this engine be internally balanced or externally balanced?

Since I do not have the flywheel, flex plate or balancer yet (and need to buy them) I need to know whether or not they need to be weighted.

Since the crank is steel and has a six bolt connection point on the back where it connects to the flex plate and flywheel, I would think it should be internally balanced. The six pack motors I heard, had an 8-bolt connection point and also had heavier rods.

So I'm trying to figure out what rods I have.

The rods I have are cast with the #s DF2MS3049 on them. There is no manufacturer's mark.

When I did a google search on the #s the only thing that comes up is a guy that is selling some old rods that he says came out of a 440 six-pack set up. However, that does not mean it was an original six pack motor.

So I need to determine if these are the heavier rods or not and would like to know the manufacturer.

Any help will be greatly appreciated.

John

 

http://www.440source.com/stockrods.htm

 

were they balanced together ???

 

Your thinking about the rod weight and balance, now you have a different weighted piston than stock which changes everything.

Unless you have documentation from PAW saying these piston rod assemblies have been balanced to that crank (with bob weight numbers) I would not trust it.

I'd feel better having a reputable shop balance it and know what you've got before buying anymore parts.