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
On the front of the timing chain cover, drivers side towards the top of the harmonic balancer.
the 1986 Chevy truck 305 HO produced 180 hp
6 or 8 drgee
There is no timing belt on a 305 unless it is an aftermarket belt drive system.
same as a 350
6 degrees BTC
Top Dead Center
yes I can.
Try 12 degrees initial and see if it pings. If not, try a little more.
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