Bring number one cylinder to top dead center. Make Sher you on the compression stroke. If not your 360 degrees off with you piston setting for tdc. Make Sher that the distributor rotor is pointing at number one wire on the cap. That should put you in time.
The headers would be the same anyway, so you can order headers for the 83 and be all set.
Depends on how the motor is set up.
Computer controlled and not adjustable
8 degrees.
That requires an engine scanner.
Reuse your old 305 distributor.
Set timing at 36 degrees at 2000 rpm's
You can change your 1983 Chevy single headlight set up to a dual?æheadlight set up. You will need to make several modifications to the front grill.
Set the points for 30 degrees dwell. 1988 305 has electronic ignition.NO POINTS.last year for points was 1974
a 305 Chevy makes about 160 horsepower, though if its set up right it can make up to 350 without major modification
0 degress top dead center
Use a dwell meter to set the points at 30 degrees dwell.