I haven't tried that specifically. However, with the plugs out the starter spins it up at a high rate of speed similar to what I hear when the starter was on the service bench at the shop. Some other things to add...Remember that with the foot starter (at least on my truck) you can turn the starter over with the key off and it will not actually try to start because the rest of the distributor systen is shut down. SO the issue is not timing or kickback from being too far off on the timing. When it starts (when first cold) it will run pretty smooth. Vacuum when it is idling at about 650 RPM is around 21" at the carb port and it is steady.
Keep asking me questions... I am hoping to find something I am missing.