I had my engine balanced a few months ago and I've not been able to figure out the balance sheet I got from the machine shop. This is my first engine I've had balanced. Take a look at the link and tell me if this is good, bad, fair, or what it means. Thanks.

balance sheet (http://www.bigblock67chevelle.com/tag.jpg)

Rat,
All the balance card does is list the weights of your parts and the final calculated bobweight, which looks about average for a Rat with stock type parts.

looks OK to me also. Just as a point of reference, or not, I looked at my 4.560 bore JE slugs with 37cc dome and the weigh 624 grams. My 4.350 bore 505bbc weisco pistons with 48.4cc dome weigh 535grams. :D

Yeah, I've got those heavy Speed Pro forged pistons.

i thought the true forged wisesco was a light piston. They sell them at summit for 565.

my 4.310 with 47cc dome weighted 750 grams. ;(