4.3 vortec timing marks?

[gtfireftr]

So I wanted to check the timing on my port engine to verify that it is indeed set correctly....
I look at the front cover, and see that there is one "tab" with a notch in it. I assume that this is the mark that is used to determine the timing.
I look at the harmonic balancer and see only on large line. I assume this is for TDC..... My question is how to determine the degree of setting on the balancer.
The starboard engine has the degrees marked on the balancer. Is there a way to determine the degrees on the other balancer? I have no idea why there would not be any degree marks on the port balancer....
Thanks in advance.

 

[Bt Doctur]

What type of ignition and fuel delivery?

 

[gtfireftr]

Thunderbolt 4.
Mercarb 2 barrel carbs..

 

[achris]

Single mark on the timing cover and balancer line up to give TDC, so you are right there. There are 2 ways to get an indication of your timing. Either use an advance timing light (something like THIS). Basically you point the timing light at the marks and advance the timing on the light until the marks line up, read the dispaly and you have the engine timing advance, or buy some 'timing tape'....

Chris..........