with a socket wrench and a feeler gauge. Set the valve lash to the manufacturer's specifications. Most lash adjustments are done "hot" (with the engine at full operating temperature) so keep that in mind. I usually set the lash 1 or 2 thousandths loose for the initial cold adjustment when dealing with a newly installed cam shaft, rocker arms, etc. You're better off being a tiny bit loose than you are being too tight.
0 lash, then tighten between 1/4, up to 3/4 turn.
Yes.
Chevy 350 small block engines with hydralic lifters set at 0 lash. That means start the engine and adjust the valve until it just quits clicking. Then tighten the nut approx 3/4-1 turn then set the next one.
Could be, Out of adjustment Worn camshaft Worn lifters Worn pushrods Worn rockers All of the above.
That is a later unit. They had temp., sensors in it. Plug them, or get an older one, without them.
If it's actually the rockers arms that are "chattering" while the engine runs, you may need to adjust the lash. If there are Solid lifters in the engine, you may want to switch to hydraulic lifters and adjust the rockers to the moment of "zero lash". Adjust them in pairs per cylinder while the lifters are in the down position (both valves closed). When you reach zero lash on the rocker arm (the pushrod will suddenly stop spinning freely in your fingers) add an additional quarter turn to the rocker arm nut to set the "pre-load" of the lifter. This just means that the pushrod will be pushed down slightly in the spring loaded hydraulic lifter and when the engine runs, the oil pressure will keep pressure on the lifter and thus the rocker arms will run silently. More detailed info at BoxWrench.net if you need it...
there is a screw on the carb right where the throttle cable hooks to it that you use to adjust the idle.
Most 300's have no adjustment. It's just torque down the nut(bolt on newer years). There's aftermarket adjustable kits available.
That's usually caused by not following the break-in procedure. It's important to get the engine running quickly without cranking the starter much, and get it up to speed right away. If the cam has suffered wear from the lifters not rotating, it will need to be replaced.
Look in the valley between the lifter bores. If there are two bosses with small threaded holes, then it is a roller block. These holes are for the bolts that hold the spider bracket that holds the roller lifter brackets in place. You can buy roller retrofit lifters to use in a non-roller block.
On older Chevy engines, the oil pressure line connects on the block, behind the head on the 1,3,5,7 side of the engine. You'll see a small tapped hole.
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.