The Stovebolt Site Forums The Shop Area Engine Shop balancing or not

Does it really paid to balancing a 250? I'm going to run it hard. this is what going to be in it. bored over 155 with 30 over 327 10 to 1 flat top piston, 530 lift cam, 650 dp holley dual line, dual exhaust, dual point dis, with munice M21 trans. found a engine shop to do it for around $150.00

Thanks Yall Super250six

Do it. It is cheap insureance.
Tom

Balancing is of great value if you are going to be running high RPM's. Sounds like that is what you have in mind so I'd say balancing is a very good idea.

There are a couple of different balancings-

You can do internal and external balancing.

Internally, you can balance the rods and pistons, or rods, pistons and crank.

External balancing, as I understand it, is the crank, flywheel and clutch cover, and something you do when you change things- i.e. new crank or flywheel? Have them balanced with the clutch cover.

What my machinist told me was that with a striaght six there's no need to balance the crank but you should do the pistons and rods. If you are using the original flywheel, no need to touch the external stuff. My machinist charged $150 to balance the pistons and rods.

Since you are getting pretty radical with your engine I'd definately get everything balanced, especially if you are planning on spending a lot of time at the higher RPMs

Hopefully someone will shed more light on this!