I have a 51 400 and I didn't know that the crankshaft can be turned manually. Is this at the front of the engine?

Your 9/16 reply to removing the seals in the transmission suggest drilling two .108 holes. Drilling these holes seems to be very difficult. Maybe a right angle dentist drill might be used but location the drill point would be very difficult. Did you drill from the top of the transmission? Remember only the '51-400 has no access plate on the top. I believe all other Ultramatics used do have this. Comment?

I found number on the casting just around the corner from the control axis input. It is 29546. Where might I find whether this was used with which engine? My '51 has a '53 engine Thanks

Your comment about being too far advanced may have solved my problem of just barely cranking initially, but after 8 sec. it starts and runs fine. Must check the timing soon! Thanks

Where can I find the transmission serial number for a 1951 400 with Ultramatic transmission?

Can the seals around the throttle and selector shaft be replaced without removing the transmission oil pan?

The 113mm and 1/2" are almost perfectly interchangeble. A good fit. As 25.4mm = 1" you can calculate the difference easily. So 1/2" x 25.4mm is 12.7mm. So the fit is within 0.3mm which is about a 2.4% ((13-12.7)/13 x 100) a small difference. This so small that there should be no rounding. For 9/16 =?14 mm: 9/16 x 25.4 = 14.29 which is 2.1%, a small difference also
Incidentely, the 25.4mm = 1" is not approximate but is an exact relationship.
So you can calculate the rest of the numbers and add this information to the original tabulation. Make a copy and post it on your shop wall or put it in your toolbox.
Humer

Access to dash wiring and bulbs by lying on your back is a real bear. Can the instrument panel be "easily" removed (screws accessible in back?) for better access?

Over the winter (down to -20 at times) my transmission lost a lot of fluid. Doesn't show on end of thedipstick!..Heard from a few experienced people who said just fill it up; ("these always leak over the winter") and that "fixes it"! Hard to believe Can this be true? And what causes the leak? Can fluid be filled from the vent hole in the top? And isn't there an easier way to access the dipstick other than jacking up the car, or on a lift? Can I cut a hole in the floor pan? My owners manual shows a picture of someone holding up the dipstick against the background of the bell housing. How come? Do I have to take the body off to access it this way?? Help

I want to know the thickness of the fuel pump mount gasket #327807. I have an 0.028" and a 0.103" It seems that because of the relatively short stroke of the fuel pump lever and the angular engagement with the camshaft fuel pump cam, the gasket thickness may be important. As much effort was made to thermally isolate the fuel pump from the crankcase, the fuel pump is thermally isolated, so the thicker one might make more sense. (There is no metallic thermal path; the mounting bolts are thermally isolated. As use of metal lockwashers would normally be used, instead a nonmetal isolation flat washer (and bolt sleeves) are used. But the bolts may not stay tight, so the heads of the bolts have holes in them to wire them in place to prevent unloosening)