* A 350 Chevy is an engine, not a specific part. There are tons of bolts holding together the various components: the block, heads, intake manifold, valve covers, oil pan, etc.
* Different engine configurations will have different numbers of bolts. A stock 350 Chevy engine might have a different number of bolts than one with aftermarket parts or modifications.
To get a more accurate answer, you need to specify what part of the engine you're interested in. For example, are you asking:
* How many bolts hold the heads to the block?
* How many bolts hold the intake manifold to the heads?
* How many bolts are used in the entire engine assembly?
Once you clarify your question, I can help you find the information you need!