Question on 360 crank balance
If the builder told you a neutral balance converter and flex plate that is what you'll use. When balancing a 360 crank it is common to balance it with the damper you gave him. So the front of the crank stays the same unless you gave him a neutral damper. The rear rear of the crank will be neutral unless you gave him a 360 flywheel.
We just did a refresh on a 360 with a neutral balance crank in the rear. You should have given the builder a new neutral damper. If you look at the rear counterweight on the crank you will see a slug of heavy metal inserted. 3 grams out at the rear is good for a mild build. Anything above 7000 rpm's should be closer to zero. Scat pro balanced stroker crank kits are terrible we have seen them 18 grams out on some BB fords. Always balance every motor.
You'll be ok listen to the builder.
If the builder told you a neutral balance converter and flex plate that is what you'll use. When balancing a 360 crank it is common to balance it with the damper you gave him. So the front of the crank stays the same unless you gave him a neutral damper. The rear rear of the crank will be neutral unless you gave him a 360 flywheel.
We just did a refresh on a 360 with a neutral balance crank in the rear. You should have given the builder a new neutral damper. If you look at the rear counterweight on the crank you will see a slug of heavy metal inserted. 3 grams out at the rear is good for a mild build. Anything above 7000 rpm's should be closer to zero. Scat pro balanced stroker crank kits are terrible we have seen them 18 grams out on some BB fords. Always balance every motor.
You'll be ok listen to the builder.