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I got a complete setup from a 54 Plymouth. The kickdown switch was bad. I got a replacement from Parts: Borg-Warner Overdrive Parts | Fifth Avenue Internet Garage (fifthaveinternetgarage.com) Family owned with quick shipping. Mike

Is the determining difference that the new pumps have sealed bearings? I have no data to support my conclusion but yes I think you are correct

Seems like the old style would be prone to leak under pressure .... seems when they start leaking it is time to grease them .... pressure would just wash the grease out faster. Sometimes I think higher temps would help the engines run better but more important burn the sludge off and be a cleaner running engine. I do have a original mopar heater/core in my truck .... I also have a new style water pump and a pressurized radiator. I do not know what the cap is rated for in psi .... is what came with it and has a custom aluminum cap epoxied on to it so cant read it. My heater core has not started leaking yet, but has only a few hours on it with pressurized system .... it is 75 years old and would not be surprised if it leaks regardless. I'm confident it would not be too difficult to find a new replacement core if it does leak.

For those of us following along with Sniper's dizzy upgrade and needing a refresher on wiring, I urge you seek out Dave78chieftain webpage. Whether it be wiring up a module on a motorhome or a flathead six, the principles are the same. Lots of good tidbits for us to review. And illustrations, shamelessly stolen from Dave's website page (because they are simple, And get the job done). MBSoPaB

Tucker clay model

Hi! You need to drill a hole into the weld, just on one side. Then you can bend the housing slightly to move the inner coil. Keep in mind, though, that bending it back and rewelding can be quite difficult.