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A 97 Chevy Cavalier uses standard hydraulic type lifters. They utilize oil pressure to control the height of the lifters and provide a small clearance across the camshaft.
Yes you can as long as the cam that you are calling original is a roller cam.If it is just inspect the lobes on the camshaft real good and close.
Yes, the bleeder hole has to face up AWAY from the camshaft. If it is down they will not function correctly.
No, If it runs good just drive it; spend the money on something you need.
Yes, the bleeder hole has to face up AWAY from the camshaft. If it is down they will not function correctly.
how to adjust the lifters and tie rods
To replace the valve lifters on a Cavalier, remove the intake manifold, valve covers and rocker arms. Remove the heads of the lifters using needle-nose pliers.
If we are talking about valve lifters, remove cylinder head and pushrods and lifters will be excessable.
lifters
NEED to??? No. But the question becomes, why are you replacing the camshaft? You should always replace the lifters when replacing the camshaft. A worn camshaft usually indicates that there will be other wear as well, but if you just want to squeeze a few more miles out of the engine, you might be able to get by with just replacing the cam and lifters.
Lifters dont really knock, they chatter. You may have a bigger problem.
Noisy lifters in 2.2 and 2.5 sohc engines are usually indicative of a worn camshaft, as many were replaced under warranty.