here the best answer i can give you on the timing of a 305 Chevy engine i seen timing on these engines from 0 to 13 btdc the best way to set the timing is to disconnect the est plug and start the enginge and very slowly turn the dis. and listen to the engine until it runs the smoothest then turn it off and reconnect the est plug and try restarting it it should start nicely if not then you need to readjust the dis. my 305 which is a 1985 is happy at 12deg. btdc. but is built up a little and no poluion bull on it
Mine runs good at 8-10 BTDC
the 1986 Chevy truck 305 HO produced 180 hp
On the front of the timing chain cover, drivers side towards the top of the harmonic balancer.
There is no timing belt on a 305 unless it is an aftermarket belt drive system.
6 or 8 drgee
same as a 350
Top Dead Center
6 degrees BTC
yes I can.
Try 12 degrees initial and see if it pings. If not, try a little more.
timing fire order or mechanical failure
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.
There is no timing belt in that engine. It has a timing chain.
6 deg BTDC
Computer controlled and not adjustable
That requires an engine scanner.
Depends on what the 305 is in, a 305 camaro engine needs like a 9 tooth starter because the fly wheel is 12.75 inches in diameter with 50 some teeth. A 305 in a Chevy half ton will have like a ten tooth starter for the 14.25 inch diameter flywheel that has like 60 some teeth. All 305 engines before 1986 are the same they did have different flywheels for what ever Chevy put them in. 1986 and newer 305's had different cranks the flywheel bolts up different on a 1986 305 compared to a 1983 305.
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