Need to be balanced?

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ColeTrickle74

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Probably a stupid question, I'm using a stock crank, kb107 pistons, and scat 26123 I-beams for my 360. Its .30 over and I don't have a damper, flex plate, or converter yet. Do I need to get the rotating assembly balanced? The pistons and rods are supposedly to come balanced. Thanks!
 
Definately balance it!!I just made the same mistake. It will cut the life of the engine a bunch. Mine ran beautifully for about 10k miles then started knocking. I believe I lost a bearing somewhere but I haven't tore it down yet to see.
 
When we were rebuilding our engine, we had it balanced. The machine shop even wanted our pressure plate, to balance everything together. It sure runs smooth, smoother than before, and it was balanced then. It really helps to have the whole assembly balanced.
 
The pistons are weight matched, not balanced and the rods are balanced but the problem arises when you put much lighter pistons and rods on a crank that was originally balanced for heavy parts. That throws the bob weight way off which is why it is imperative you have it balanced. If the engine is for perf. use I even have stock stuff balanced cause the factory balance job was marginal at best.

You will need your balancer, flexplate and converter to get it balanced. Actually the best way for you to do it is since you have none of those parts is to buy the B&M 360 external balance plate (part #10236 for a 727 trans. and part #10239 for a 904 trans.) then you can use a neutral balance torque converter and you don't need a converter to have the assy. balanced.
 
Awesome, just the answer I was looking for, and the answer to my next question :) Better safe than sorry I guess and it just started looking pretty too. Recommend any specific balancer?
And I just noticed it looks red in every picture I take, weird.

scs.jpg
 
Looks like it should be a good one but I'd call them and verify that it will line up correctly with your stock pulleys cause some aftermarket balancers for some stupid reason are offset different than stock balancers. That of course makes for a problem with belt alignment.

BTW: the very rear section of the engine looks orange. Strange. Something weird about how your camera sees it.
 
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