5.0L GM timing question

[Searay23]

Newbie here to the forum.. Question: How do you tell what kind of ignition you have.. I have '93 Searay, 5.0LX GM, 4 barrel, mercruiser. I want to check my 8* timing and been reading here about jumper wires, etc.. Also, on the notched timing tab, is each of the notches 4*? Need a procedure to follow.. thanks.. Clint
PS: Eng S/N: OF013756

 

[rs2k]

Re: 5.0L GM timing question

Does it have points ignition or electronic ignition?

I recommend a timing light with an dial. Then you can set the dial to 8? and just line up the TDC mark.

 

[Searay23]

Re: 5.0L GM timing question

Does it have points ignition or electronic ignition?

I recommend a timing light with an dial. Then you can set the dial to 8? and just line up the TDC mark.

It has electronic.. I have a Craftsman timing light and it is not adjustable..

 

[Don S]

Re: 5.0L GM timing question

You have a Thunderbolt IV ignition. No wires to jumper or anything. Just aim your timing light and turn the distributor.

Look what I found in the OEM service manual.

 

[Searay23]

Re: 5.0L GM timing question

Don... That's what i was looking for... "you the man"..!! Thanks