Crank pulleys will not bolt to balancer

Then the timing marks will be blocked by the lower hose.

I would use the 273 cover, cast iron water pump, and the 318 vibration damper.

Find TDC and then mark the damper for the mark on the old timing chain cover with white out or white or silver paint. It will make tuning it up easier.

Just keep the balancer from the 318 and then use the old 273 stuff on it...

Thanks for pointing that out!

As my luck would have have it, I already had everything assembled [318] timing cover on and motor is now in car. I did look last night at the "hidden" timing marks under the the 318 timing cover behind the water pump radiator hose outlet.:banghead:

Without hoses belts brackets, ect. on I can currently see almost all of scale up to 10-12 deg. before it disappears..

But with the mild cam, the timing mark is going to be pretty much further "off scale",
where no timing marks exist..?

Looking at the the 273 set up with the tab bolted to the bottom of the water pump, if I went the route of the 273 balancer that still leaves timing much to extrapolation as the 273 tab will also be no where near where desired timing will be?