1989 Cruisers 350 Base Timing

[harringtondav]

My pal is replacing the points on one of his Cruisers 350 cu in SBC engines with a hall effect replacement. He's asked me to help him time the engine.
If I can get him to get the engine s/n before then I will. Otherwise we will check the current timing one each engine an hope this is correct.
It's been years since I timed an engine. IIRC distributor vacuum advance hose should be removed and plugged when setting base spark advance.
Does anyone know the base spark setting? ...anything else I've forgotten?
Thanks, Dave

 

[Scott Danforth]

There is no vacuum advance on marine distributors.

Depending on which advance curve the distributor has, you set your base timing so you have 34 degrees all-in

So if you have a 22 degree advance, you can go up to 12 BTDC. If you have a 24 degree advance, you set base to 10 BTDC

 

[harringtondav]

There is no vacuum advance on marine distributors.

Depending on which advance curve the distributor has, you set your base timing so you have 34 degrees all-in

So if you have a 22 degree advance, you can go up to 12 BTDC. If you have a 24 degree advance, you set base to 10 BTDC

Thanks Manitowoc. Disconnect the vacuum advance or include it in the base timing?