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70 disc hub to 73 spindle grease seal

Dodgey

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Hi,

I'm doing a disc conversion for my 70 Challenger. Wanting to keep the 14" rallye wheels so have got my hands on a pair of the 10" discs. The place that I got them only had 73 spindles. Easy enough to get the bearings to suit, but can anyone tell me what the grease seal is that works with this combination?

Just spent an hour with the local bearing supplier and the best they could come up with is getting a machinist to shave a 1/16th of the base of the spindle.

Thanks in advance!
 

Katfish

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I always check RockAuto for things like this.
73 uses the larger bearing and matching seal, common parts for all disc brake cars all the way up to 80's
 

Dodgey

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I always check RockAuto for things like this.
73 uses the larger bearing and matching seal, common parts for all disc brake cars all the way up to 80's
Thanks Katfish, I can see either the 70 seal or the 73 seal. Not one that matches the 70 hub dia to the 73 spindle dia ...
 

Katfish

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70 hub won't fit a 73 spindle, 2 different sizes
You need the later rotor
 

Challenger RTA

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Brake time 1 I wanted to make sure this is right. so I would refer to an expert. And here he is.

Screenshot 2023-06-05 at 18-54-17 DISC-O-TECH Stop on a dime from Mopar Action and Rick Ehrenb...png
 
Last edited:

Challenger RTA

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Brake time 4

Brake upgrade parts list


Font Circle Machine Clutch part Automotive engine part




Photo key number Description Qty. Mopar P/N Aftermarket brand, P/N Original Application Notes, sources
1 Knuckle, L 1 3402629* Master Power 73-74 E- body, disc- equipped 73-76 A- body Junkyard, or new repros from Master Power Brakes, Inc
2 Knuckle, R 1 3402628* Master Power Same Same
3 Rotor, HD, 11.75" unicast 2 4126545* EIS D17038 76-78 B- body police, 79-up R- body police New suggested
3A Rotor, HD, 10.87" unicast
(opt., see note)
2 3880685 EIS D17032 Diplomat, Volare, etc. police Opt.- use w/14" wheels
4 Caliper, L 1 3744481* EIS RC6066 70-72 B- body; 70- 74 E-body Pin type. See text for slider info.
5 Caliper, R 1 3744480* EIS RC6065 Same Same
6 Caliper adapters 2 3880557* _ 76-78 B- body w/pin- type calipers Junkyard. See text for slider- type info.
6A Caliper adapters - opt. 2 3580839*
3461977*
- 70-74 E- body; 70- 75 B-body For 10.87" rotors and 14-in. wheels
7 Adapter bolts 2 6030952 _ Most disc cars Use new
8 Caliper pins 4
2-pr.
4094147* EIS H5017 Any Mopar w/pin calipers Inspect used ones carefully
9 Pads
(semi- met., pin- type)
1 set 4049700* FMSI D39 Any Mopar w/pin calipers Race compound available - see photos
10 Splash shield, L 1 3880519* - Most 73-up Mopars Omit for HD or race use
11 Splash shield, R 1 3880518* - Same Same
12 Seal, splash shield 2 2944704 - Same Same
13 Hyd. hose 2 3766616* - 70-72 B,E- body Use new. This number is for pin- type only.
14 Hose seal washer 2 6030084 - Same Same
15 Inner wheel bearing 2 5252823 Bower/BCA A-17 All 73-up disc Mopars Re-use outer bearing, washer, nut, nut lock
16 Seals 2 3580723 National 5121 Same -

Note: this chart lists components for the target swap: 62-72 B-bodies and 70-74 E-bodies. See text for caliper options and swaps for other vehicles. Mopar part numbers marked with an asterisk (*) are no longer available. The numbers are shown primarily to aid in cross-referencing to aftermarket brands and stock numbers.

The chart does not show parts for the optional slider-type calipers.http://www.allpar.com/disc-main.html
 

Challenger RTA

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Brake 5
Parts sources


Master Power, Inc.
110 Crosslake Park Rd
Mooresville N.C. 28117
(888) 251-2353
(704) 664-8866
Master Power Brakes

AR Engineering, Ltd.
See website for dealer list:
www.arengineering.com

Firm Feel, Inc.
2730 NW Bliss Road
Vancouver, WA USA 98685
(360) 574-8093
FIRM FEEL, INC. - MOPAR STEERING & SUSPENSION

Wilwood Engineering
4700 Calle Bolero
Camarillo, CA 93012
Phone: (805) 388-1188
Fax: (805) 388-4938
Wilwood Disc Brakes - Specialty OEM, Racing, and Street Performance Bolt-On Brake Kits

Oil Filter Service Co.
615 SE Market St.
Portland, OR 97214
Orders (888) 232-5126
Tech (503) 232-5126
FAX (503) 232-5170

J&P Cycles
13225 Circle Drive
PO Box 138 Anamosa, IA 52205
800.397.4844
Motorcycle Gear & Parts Online | J&P Cycles For Aftermarket Accessories | JPCycles.com
 

Dodgey

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Brake time 4

Brake upgrade parts list


Font Circle Machine Clutch part Automotive engine part




Photo key number Description Qty. Mopar P/N Aftermarket brand, P/N Original Application Notes, sources
1Knuckle, L 1 3402629* Master Power73-74 E- body, disc- equipped 73-76 A- body Junkyard, or new repros from Master Power Brakes, Inc
2 Knuckle, R 1 3402628* Master PowerSame Same
3 Rotor, HD, 11.75" unicast 2 4126545* EIS D17038 76-78 B- body police, 79-up R- body police New suggested
3A Rotor, HD, 10.87" unicast
(opt., see note)
2 3880685 EIS D17032 Diplomat, Volare, etc. police Opt.- use w/14" wheels
4 Caliper, L 1 3744481* EIS RC6066 70-72 B- body; 70- 74 E-body Pin type. See text for slider info.
5 Caliper, R 1 3744480* EIS RC6065 Same Same
6 Caliper adapters 2 3880557* _ 76-78 B- body w/pin- type calipers Junkyard. See text for slider- type info.
6A Caliper adapters - opt. 2 3580839*
3461977*
- 70-74 E- body; 70- 75 B-body For 10.87" rotors and 14-in. wheels
7 Adapter bolts 2 6030952 _ Most disc cars Use new
8 Caliper pins 4
2-pr.
4094147* EIS H5017 Any Mopar w/pin calipers Inspect used ones carefully
9 Pads
(semi- met., pin- type)
1 set 4049700* FMSI D39 Any Mopar w/pin calipers Race compound available - see photos
10 Splash shield, L 1 3880519* - Most 73-up Mopars Omit for HD or race use
11 Splash shield, R 1 3880518* - Same Same
12 Seal, splash shield 2 2944704 - Same Same
13 Hyd. hose 2 3766616* - 70-72 B,E- body Use new. This number is for pin- type only.
14 Hose seal washer 2 6030084- Same Same
15 Inner wheel bearing 2 5252823 Bower/BCA A-17 All 73-up disc Mopars Re-use outer bearing, washer, nut, nut lock
16 Seals 2 3580723 National 5121 Same -

Note: this chart lists components for the target swap: 62-72 B-bodies and 70-74 E-bodies. See text for caliper options and swaps for other vehicles. Mopar part numbers marked with an asterisk (*) are no longer available. The numbers are shown primarily to aid in cross-referencing to aftermarket brands and stock numbers.

The chart does not show parts for the optional slider-type calipers.http://www.allpar.com/disc-main.html
Thank you sir! You are a legend!!
 

rogue

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amazing posts there... i've got 73 spindles on my 71 challenger, installed before i bought it and unknown, and went through figuring all that out on the fly... wish i had this info back then
 
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