internal/ external balance

[64'5speed]

I know all 360's came externally balanced. the motor I just picked up to swap my /6 with didn't come with a front dampener. usually that would be drilled to indicate counterbalance right? can you tell by looking at the crank if its internal or external? the guy I bought it off of doesn't know what happened to the dampener. or what the balance situation is

[NYrr496]

I can't help you with the pics, but I can tell you this... I built an internally balanced 360 for a friend many years ago and it is still running today.

If I remember right, there was quite a bit of Mallory Metal involved, so it was a little pricey.

[BIGFISH]

If I'm remembering correctly there are 2 different balancers (ones lighter than the other) for the 360. I think the lighter one is '71-'74 and the heavier one is from '75 & up. See what year your block/crank is and check a bunch at the boneyard to verify.  All are external balance unless they have been rebuilt and internally balanced.

[dangerdawg]

 

[64'5speed]

block is a 75. I got the heavy one.

[Alexandre_Garcia]

All LA 360 have the same inbalance, use the damper U like most. Ones have the inbalance at the hub, others in the outer ring. I'd rather have the ones with the hub with a big cam shaped weight but it is heavuer and harder to find. Magnum 5.9 has another inbalance weight and is not suited to the older LA 360 engines

[bwells]

If you're using a tranny off of an internally balanced motor, make sure to get the correct flexplate also.  B&M makes them, and Summit carries them. 

If you need a damper, I might have one off a late eighties LA 360 that I pulled from a ramcharger. 

[64'5speed]

going manual trans. still need a flywheel but I got plenty of time before I need it badly. Damper situation is taken care of.

[Alexandre_Garcia]

64,

In summitraciong they carry this: DCC-4529110, is the correct flywheel for a stock, external balance 360 LA engine, will not fit a Magnum 5.9 that has a different balance factor, it has a 130 ring, works with 10 or 10.5 clutch, 270$.
If You have a Magnum 5.9L you should use a P5249842 , especifically made for this aplication, 354$
There are a bunch of other part numbers fitting the same criteria in a search there, but these are the ones You need, right out of the box, not requiring a new rebalancing job on the engine.