Nope. You are getting bad info. Cam has absoutely no bearing on balance. You can go to Chevy and get the early style 2 bolt block, slide a $ 50 cam in it from PAW, use a $ 120. aluminum intake from anybody, top it with a $ 200.00 Edelbrock 500 cfm, fire it with a $ 200.00 Unilite setup, and you will be good to go for about $ 2000. I can't hardly rebuild an engine for $ 2K.

Like I said, I wish I was into Chevys because these Goodwrench crates are the steal of a lifetime, and you get a warranty. I wish Ford had a comparable program. With the limitations you outlined not having experience doing this work and all, you really would be way ahead. Even pros screw up rebuilds.

I did a swap for a customer putting one of the Goodwrench engines into his Vette, and it was the simplest install I've ever done.

Give it some thought.