What altitude are you at? from seal level to about 2000 ft i would set at 4
and add 2 deg for every 1500 to 2000 feet.
On the front of the timing chain cover, drivers side towards the top of the harmonic balancer.
6 or 8 drgee
There is no timing belt on a 305 unless it is an aftermarket belt drive system.
Top Dead Center
same as a 350
6 degrees BTC
The easiest way is to look at the Harmonic Balancer. The 305 has a wider thicker balancer than the 350. Pus the timing tab on a 305 is located ON the timing cover and the 350 is bolted on the with the cover bolts. Riky9
The timing for this engine is electronically controlled and not adjustable
the timing or the firing order? the timing gears have 2 dots that line up when the timing is correct at top dead center. the firing order 18436572 and the cylinders are numbered as following, driver side 1357 and pass side 2468
Timing Advance not working or fuel sensor messed up.
Computer controlled and not adjustable
That requires an engine scanner.
6 deg BTDC
The timing on that year engine is computer controlled. It requires an engine scanner to set the timing. YOU CAN NOT USE A TIMING LIGHT.
Disconnect the 4 way plug at the distributor so as to put the computer offline. Set the timing to specs and then reconnect the 4 way plug.
On my 83 z28 305 it is 700 rpm
it is located on the bottom end of the head
If it has a 305 around 15mpg If it has a 350 13-14