I have read contrary info on timing and timing marks on the 327/350 Q engines. The manual I have says 4° BTDC and folks write it should be 8°. Also that the fly wheel has a hole drilled in at at 4° and no conventional lines etched in like you would normally see on an automotive engine. On my 31 there is no way to aim a gun and get a good line of sight to the flywheel thru the window. I am forced to use a mirror. I also have the electronic distributor so any advance is going to be the calc built into the chips based on time interval between sparks. Any advise on all of this is appreciated. Seems like my engines hit the wall at about 2500 rpm. They both have recently been rebuilt so I am not pushing them right now but after I get 100 hrs or so I expect to work up to WOT just to ensure I am tuned properly for fuel consumption.
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Well thanks everyone for the help. Currently the engines are starting easily, idle well all the way down to 400rpm and accelerate without backfire or hesitation out of gear. I will know more when we get her out under load. At the start no holes or marks were visible At the end of setting the timing on my port or left hand rotation engine a second drill hole came into view. About 2” ahead of where I am set now. The engine seems happy with the front edge of the second hole just before it gets to the pointer. I am thinking this is slightly advanced of 5°. Maybe some one taped the flywheel marked TDC then also marked an advanced setting they were shooting for. This engine is the original that was rebuilt so I am going with this to start. The starb engine was a replacement with new heads fit. Wish me luck.