paulrhd29nz Posted June 11 Share Posted June 11 (edited) I need to I.D. This rear end in order to re- do the brakes. Original owner put it in our 1919 Essex. Was told it’s mopar. numbers read( I think ) Ic-796170 and 1828448ENP the E could be an F 258 can the ratio be told from this info ? thanks Edited June 14 by paulrhd29nz (see edit history) Link to comment Share on other sites More sharing options...
pont35cpe Posted June 11 Share Posted June 11 (edited) I don`t know the make of rear-end, but thinking it is not positraction. You can get a close guesstimate on the ratio by jacking one rear wheel off the ground, then with it in neutral, rotate the wheel 2 complete revolutions, and count the revolutions the driveshaft turns. I always start with the valve stem at 12 o`clock, and have a mark on the drive shaft, then rotate the wheel and count the revolutions of the drive shaft. Edited June 11 by pont35cpe (see edit history) Link to comment Share on other sites More sharing options...
Bloo Posted June 12 Share Posted June 12 (edited) It is Mopar for sure. See that funny looking insignia to the left in the second picture? It stands for Dodge-Plymouth-Chrysler-Desoto. It might be an 8-3/4", but also could be something else as there are earlier Mopar axles that look similar to the 8-3/4". You'll need to find the ratio using @pont35cpe's method. You won't get that from casting numbers. If it's 8-3/4", the ratio would have originally been on an aluminum flag attached to one of the bolts holding the carrier into the axle housing. If it were positraction, known as Sure-Grip in Mopar lingo, there should be a circular aluminum tag on another bolt that says "Use Sure-Grip Lube". What is going to actually matter to buy brake parts is what brakes you have. You probably need to just get one apart and look. The three possibilities are 1) Lockheed (1955 or earlier) 2) Chrysler Centerplane (1956-1962-ish?) or 3) Bendix (1962-ish? to the end). If you don't know by looking, post pics with a drum off and we can probably figure it out. For shoes you will need to know which of the three types you have, the drum diameter, and the shoe width. For the cylinder kits if you are doing those you also need to know the bore. You might need to take one apart to get the cup size. Edited June 12 by Bloo (see edit history) 4 Link to comment Share on other sites More sharing options...
Ornge Posted June 12 Share Posted June 12 1962-65 Dodge & Plymouth passenger, 8-1/4" ring gear, either 2.93 or 3.31 ratio. -Joe Link to comment Share on other sites More sharing options...
paulrhd29nz Posted June 12 Author Share Posted June 12 Great info guys , thank you. stay tuned 1 Link to comment Share on other sites More sharing options...
paulrhd29nz Posted June 12 Author Share Posted June 12 Great info guys , thank you. stay tuned Link to comment Share on other sites More sharing options...
paulrhd29nz Posted June 13 Author Share Posted June 13 Update’ 11” drum. 2” brakes Link to comment Share on other sites More sharing options...
paulrhd29nz Posted June 14 Author Share Posted June 14 Putting this to the top. I need to know what brakes pads and wheel cylinders to get. Link to comment Share on other sites More sharing options...
Bloo Posted June 14 Share Posted June 14 Those are centerplane brakes, they started in 56, ended in the early 60s. Assuming Ornge is right about the numbers going back only to 62, I would start by looking for shoes for a 62 Fury/Belvedere/Savoy and see if you get a match for shoe size. 65 would have had different brakes for sure. 1 Link to comment Share on other sites More sharing options...
paulrhd29nz Posted June 14 Author Share Posted June 14 Thank you all once again. 1 Link to comment Share on other sites More sharing options...
28 Chrysler Posted June 15 Share Posted June 15 The wheel slave cylinder will have a number and you probably can still buy a kit. 1 Link to comment Share on other sites More sharing options...
TTR Posted June 15 Share Posted June 15 (edited) These types of centerplane ("Total Contact") brakes with 11" x 2" shoes were used in '56-'62 Dodge & Plymouth passenger cars (Chrysler, DeSoto & Imperial used bigger, 12" drums, backing plates & shoes). Be aware that there were 3-4 "evolutions" (or updates) throughout those years and each "evolution" requires a use of some matching components, like backing plate, shoes, return springs must be from same "evolution" to get them to work correctly. For example, while they may look very similar, '56 backing plate or shoes will not work properly with their counterparts from '58 or '62, etc. The design details & features of the backing plate and the shoes seem to suggest a '60-'62, at least to me. P.S. In the last photo of the first post you can see the plug for the gear oil filling port on the differential case and about two inches straight below it is a slightly raised rectangular, flat "pad" intended for the stamping of the gear ratio at the factory. In addition to gear ratio, let's say "3.31" or "3.54", etc and although very unlikely, there might also be a stamped "S" on it, which would indicate a "Sure-Grip", a.k.a. Limited Slip friction setup. Edited June 15 by TTR (see edit history) 1 1 Link to comment Share on other sites More sharing options...
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