Rochester 2-jet (2gc)
Check on the carb.
yes, HEI distributor
yes it will
A 2-plane manifold such as the Edelbrock Performer or similar would be a good choice.
yes
TH350
8 deg. BTDC
what are the timing marks on a chev 305 motor for the year 1995.
yes
The Oldsmobile block is a different Bell housing pattern than the Chev But Most 305 were the Chev engine regardless what GM product they popped up in
Take breather off an read on carb if clean. Count jets in carb. Read sticker near radiator on top if stock an still readable. Assumin its not fuel injection
You will have to look on the carb and get the numbers on it and then go to the Edelbrock website.