If you're asking about the timing chain, I've seen factory chains that had a lot of slack, perhaps 1/2" in each direction. Most aftermarket chains seem to be much tighter.
The 350 Chevy does not have a belt, it has a chain. Slack in the chain is normal as long as it is not excessive. A better determining factor on when to replace the chain, is the condition of the gears and if the chain is noisy.
The factory timing chains have a lot more slack than the aftermarket chains.
Chevy didn't make a 350 engine in 2001
350, to 400lbs.
YES. but very LITTLE is normal.
how much torque for a Chevy Z71 350 vortec engine valve cover
Check for excessive slack in the timing chain.
Pretty much any 350 Chevy engine from 1968 to 1987 will work.
350 hp Chevy engine small block made in Canada!
That depends on the year it was made and how much you're willing to pay for it. Generally, the horsepower from a Chevy 350 can range from 250hp to 450hp.
250 to 350 hp depending on what model
350, to 400 lbs.