I have a customer that's in need of a 4.20 ratio ring and pinion set for a Ford differential that I'm thinking would be from a 1950 or so Ford car or truck. The ring gear is approx 9" diameter. It does not have a removable pinoin retainer like the 8" or 9" rearends. Does anybody have any info on parts availability?? Who has parts??? Any info will be appreciated. PM or make it public. Thanks, Pat.
It might be the station wagon rear. If I'm remembering correctly they had a rear cover. Ratio for a 56 Ford SW 6cyl w/OD was 4.27 from the factory
2/25/09 I have a good, complete drum to drum 51 merc rear with stock 4:27 ratio. Measures 61 1/4" wheel mounting surface to wheel mounting surface. PM me if you need it. Thanks,jim
Still trying to find differential info, possibly buy some parts. This unit is a front loading type rearend like an 55 Chevy car rear or a 9" Ford. It's not a Dana 44 with a six sided ten bolt rear cover. I'm thinking it would be a rear from a first gen open driveline Ford car or truck before the 9" came into production. Thanks to 19Fordy for his effort in trying to help!
Will that rear fit a 1950 Ford Tudor? If not, do you know the factory width of the stock differential for that car?
There was an article in either SRM or R&C a few years ago where they showed how to install a 1976 Ford Maverick rear in a shoebox Ford. I think they said it was a direct bolt in. This shows Maverick rear width being 56 1/2 in. http://www.roadkillcustoms.com/hot-rods-rat-rods/Rear-End-Widths.asp A friend of mine installed a Ford 8.8 in. rear in his shoebox with no problems. The 8.8 is 59 1/2 in. wide WMS to WMS. They have disc brakes, good gear ratios and many are positraction. Plus they are plentiful and fairly cheap. Read the following also. http://www.jalopyjournal.com/forum/showthread.php?t=532226 Read Post #6 in this thread for rear end width.. Then read the entire thread. http://www.jalopyjournal.com/forum/showthread.php?t=312808
i just installed a 5 lug 8" in my dads 50 convertible. it was a very easy swap. it was only about an inch narrower than stock. reused his old brake line(still in operable condition) and even park brake cables.
If you could find one, an overdrive equipped car would probably have a gear close to 4.20. The rearends in '49 thru '56 Ford passenger cars are the same. Station wagons and trucks are all Dana 41/44 style. Is this a Job Lot possibility?
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