| jerandbee | -- 04-02-2017 @ 3:50 PM |
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I am in need of a ring and pinion gear in 3.78 ratio for my 1940 Mercury - I believe the part number is 99A-4209B - does anyone know where one might be available for purchase? Many thanks for your help.
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| TomO | -- 04-03-2017 @ 8:01 AM |
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The pinion is pressed on the driveshaft on the 1939 and 1940 Mercury. The standard ratio was 3.54:1 and the 3.78:1 ratio was only used in the mountain states. Your best bet for that ratio is to find a rear end from a junk car in CO, WY, MT and ID. I broke a tooth off of the ring gear on my 40 Merc in 1978 and could not find a NOS Mercury gear set at that time, so I would say that your chances are very slim in finding a NOS Mercury gear set now. Your other option is to buy a Ford gear set and modify your drive shaft to use the pinion. Tom
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| jerandbee | -- 04-03-2017 @ 1:18 PM |
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Many thanks Tom. You have been most helpful always. I know it won't be an easy find but I guess I need them in order to install the Columbia Overdrive. I'll scatter my needs request far and wide and be patient.
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| TomO | -- 04-04-2017 @ 7:34 AM |
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Good luck in your search. I never could justify the expense and labor of installing a Columbia on my 40. Tom
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| jerandbee | -- 04-04-2017 @ 4:55 PM |
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You're so right, Tom - bought a set of original fog lights - didn't need them, put on correct horn relay, horn button, wheel cylinder brake bleeders, etc. etc. = all not needed but it keeps an old guy's brain and hands active. Just hunting for the stuff is great and fun. If I find the gears and get the Columbia I'll be busy for a good bit of time for sure. Take care and keep up the good help to all V-8ers
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| shoebox | -- 04-09-2017 @ 11:10 AM |
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Just a word of encouragement, in 2015 I decided to get or build up a Columbia for my 39 Merc. I learned as you have, that a 3.78 was considered best by most folks. I found a nice 3.78 center section with driveshaft on "that auction site". So, they are indeed scarce but are out there.
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| jerandbee | -- 04-09-2017 @ 3:30 PM |
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Appreciate the encouragement - I just found a lead from a wanted ad for an entire rear axle - checking it out now - the hunt is on and the quarry will be found today or sometime in the future for sure.
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| shoebox | -- 04-10-2017 @ 6:18 PM |
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Hey Jerandbee, I love your spirit of the chase, finding these hard to find parts can be part of the "fun". Shoebox
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