I just got one on Ebay...$50
Align camshaft sprocket ( white dot ) with white arrow on top of back part of timing cover, and white dot on crankshaft sprocket with cast in timing mark on seal retainer ( aluminum casting below bolt at 12 oclock ) the key in the crankshaft will face up for tdc and align with timing mark.
For this question to be answered you must provide the number that is above the timing chain cover. it is a 1978-1990 2 or 4 bolt main
Connect a timing light according to the manufacturers instructions to the Number 1 (front) spark plug cable. Run the engine at 2500 rpm. Loosen the distributor clamps and rotate the distributor until the "S" mark on the crankshaft front pulley lines up with mark on engine casting as timing light flashes on. When distributor timing is correct, tighten the distributor clamps.
The timing marks can assist a mechanic in setting the engine timing. The number one timing marks will set the number one piston so that the number one valve can be properly adjusted.
It wouldn't have to, but you might be able to add a couple degrees.
The engine coolant temperature sensor is located at the timing belt end of the engine on the water outlet casting.
You have to set your camshaft at a position of firing at number piston ,that is if the camshaft gear does not have a visible timing marks and in relationship with the crankshaft position it has to be position number one piston at TDC
If you are installing the timing chain on a 2.7L, the number one cylinder will not be at TDC. That is normal.If you are installing the timing chain on a 2.7L, the number one cylinder will not be at TDC. That is normal.
Blocks that have more nickel have 010 or 020 under the timing cover, meaning 10% and 20% nickel.
line up timing marks from harmonic balancer and timing tab on timing cover
Timing chain cover.
The ignition timing is set on a GM Goodwrench 350 engine by bringing the number one piston to top dead center. The distributor rotor is then pointed to the number one piston, a timing light connected, and the rotor turned until the correct timing is reached.