You should start at 4-degrees before TDC <-this is what it should be
2942E6B7-0D26-E667-F7DC-E162A40E3ADF
1.03.01
On the front of the timing chain cover, drivers side towards the top of the harmonic balancer.
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.
You could put a vacuum gage on the engine and time it for peak vacuum. A timing light is still better.
There is a mark on the timing chain cover behind the harmonic balancer(behind the crank pulley). The harmonic balancer also has a slot cut in it so that you can line the crank up with the mark on the timing cover. The mark on the timing cover should sit at the 2 o'clock position or the 12 o'clock position. My 96 Chevy 305 is at the 2 o'clock position.
Just pull the camshaft gear of it should be just 3 bolts
6 or 8 drgee
on the left side of the 1979 chevy!
There is no timing belt on a 305 unless it is an aftermarket belt drive system.
6 degrees before TDC should do the trick
same as a 350
6 degrees BTC
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