What should the initial timing be on a Chevy 350?
Initial timing is what you set the distributor at with no vacuum or mechanical advance engaged. This is the timing setting that your engine will see at idle. Given the high duration of your camshaft you will probably need someplace around 20 to 26 degrees of initial timing to get a good idle.
What should the timing be on a Chevy 454?
The initial timing should be 4 degrees before top dead center (BTDC). If the mark is adjacent to a higher number BTDC, the distributor must be rotated clockwise to bring it down to 4 degrees. If the number is lower or after top dead center (ATDC), turn the distributor counterclockwise.
When is the piston at the top of its compression stroke?
At that point rock back and forth a little till your zeroed in between suck and blow; (it will be real sensitive) and there you have it, top dead center on the compression stroke. Move on to STEP FOUR. Now remove the hose and place a long screwdriver; coat hanger or straw into the spark plug hole to feel the height of the piston.
Where does the power come from in a Chevy 350?
That means the piston is at the top of it’s compression stroke, both the valves are closed, and the gasoline and air mixture is compressed. When a spark is applied by the spark plug, the cylinder fires and power is transmitted through the crankshaft.
How to set timing chain on 350 Chevy?
If the dots are lined up you can’t screw it up. Then get your #1 piston on TDC compression stroke (your timing mark on the crank should be close to zero). Drop the distributor in and the rotor should be pointing slightly before the #1 position (it rotates clockwise). sprocket marks dot to dot as shown will be # 6 firing !
The initial timing should be 4 degrees before top dead center (BTDC). If the mark is adjacent to a higher number BTDC, the distributor must be rotated clockwise to bring it down to 4 degrees. If the number is lower or after top dead center (ATDC), turn the distributor counterclockwise.
That means the piston is at the top of it’s compression stroke, both the valves are closed, and the gasoline and air mixture is compressed. When a spark is applied by the spark plug, the cylinder fires and power is transmitted through the crankshaft.
How much compression does a Chevy engine have?
Chevy’s literature states this is an 8:1 compression engine, and that’s what we found when we measured one of these engines a couple of years ago. This engine uses a dished piston with 13 cc’s of volume that reduces the compression. One of the dimensions that is not easily changed is the distance from the piston top to the deck.