If the timing marks on the crank gear and cam gear are lined up before you install the chain, you are good to go.
1996 Chevy blazer timing chain
Timing Chain
The 4.3 liter V6 engine in a 1997 Chevy Blazer has a timing CHAIN
4.3 has a chain
Timing belt
94 has a Chain..
how to install time chain cover on a1997 blazer
how much play should a 4.3 Chevy engine timing chain have?
That would have a chain.
When it go's out and the engine quits are when you can no longer set the timing with an engine scanner.
It does not have a timing belt, That engine has a timing chain and gears and they normally last the life of the engine.
yes you have to change the pan gasket when doing the timing chain