74 Spindle Selection

[Startlingzeus9]

Hi All, Have a 74 RR that I'm in the process of rebuilding, and do not have many suspension parts or knowledge. Have Control arms but no spindle, and am trying to understand what I need to get. When I search I find spindles are all lumped under 62-74 B/E body, and I know that 73/4 had different suspension, but item descriptions state that the spindles are designed in the style of 73-up disc brake spindles. Does this mean that they will fit the 74 front suspension? I'm looking at the OER MM3068 specifically if it helps.
Thanks in advance!

 

[RR Fan Dan]

You are not going to find a direct fit aftermarket spindle for a 74 Plymouth Satellite. You are going to have to go with A body spindles if you can find them. Somebody else on here that has done this should chime in about the A body swap. You could also try eBay for a used set.

 

[T2R9]

You need 73-78 b-body spindles. They are about 3/4” taller than e-body and 70-72 b-bodies. No aftermarket options that I know of.

 

[QuickBpBp]

I believe I have some used spindles from a '73 if needed.

 

[R/T Boy 67]

F bodies are also a source for the knuckles ( spindles) that you need.

 

[theman440]

I have a pair of used spindles for sale -

 

[RR Fan Dan]

I have a pair of used spindles for sale -

And there you go.

 

[Vaanth]

Hi All, Have a 74 RR that I'm in the process of rebuilding, and do not have many suspension parts or knowledge. Have Control arms but no spindle, and am trying to understand what I need to get. When I search I find spindles are all lumped under 62-74 B/E body, and I know that 73/4 had different suspension, but item descriptions state that the spindles are designed in the style of 73-up disc brake spindles. Does this mean that they will fit the 74 front suspension? I'm looking at the OER MM3068 specifically if it helps.
Thanks in advance!

Original knuckle/spindles which are the same, or fit the same, as those originally on the 1974 Road Runner are listed in the following:

• 1973 - 1979 B-body
• 1979 - 1981 R-body
• 1976 - 1980 F-body
• 1977 - 1989 M-body
• 1980 - 1983 J-body

OER MM3068 is a copy of the 1973 - 1976 A-body and 1973 - 1974 E-body knuckle/spindles, with sliding caliper adapter brackets. The 1973 - 1976 A-body and 1973 - 1974 E-body knuckle/spindles are shorter than the listed knuckle/spindles for the 1974 Road Runner, and will not fit with proper control arm mounting and suspension travel.

The following image shows the difference between the spindle types:

The taller knuckle/spindle is used for the added spacing caused by the isolated K-member bushings (whether original or iron, aluminum, or urethane replacements).

The 1973 - 1976 A-body and 1973 - 1974 E-body knuckle/spindles are use to convert 1972 and earlier A-body, B-body, and E-body cars to the later style disc brakes.

The OER listing has errors in its application listings, including the inclusion of the 1973 and 1974 B-body cars.

To connect your control arms to the knuckle/spindles, you will also need steering arms to mount to the lower ball joint. Steering arms from the following can be used:

• 1973 - 1979 B-body
• 1979 - 1981 R-body

---

 

[RR Fan Dan]

Original knuckle/spindles which are the same, or fit the same, as those originally on the 1974 Road Runner are listed in the following:

• 1973 - 1979 B-body
• 1979 - 1981 R-body
• 1976 - 1980 F-body
• 1977 - 1989 M-body
• 1980 - 1983 J-body

OER MM3068 is a copy of the 1973 - 1976 A-body and 1973 - 1974 E-body knuckle/spindles, with sliding caliper adapter brackets. The 1973 - 1976 A-body and 1973 - 1974 E-body knuckle/spindles are shorter than the listed knuckle/spindles for the 1974 Road Runner, and will not fit with proper control arm mounting and suspension travel.

The following image shows the difference between the spindle types:
View attachment 2039474

The taller knuckle/spindle is used for the added spacing caused by the isolated K-member bushings (whether original or iron, aluminum, or urethane replacements).

The 1973 - 1976 A-body and 1973 - 1974 E-body knuckle/spindles are use to convert 1972 and earlier A-body, B-body, and E-body cars to the later style disc brakes.

The OER listing has errors in its application listings, including the inclusion of the 1973 and 1974 B-body cars.

To connect your control arms to the knuckle/spindles, you will also need steering arms to mount to the lower ball joint. Steering arms from the following can be used:

• 1973 - 1979 B-body
• 1979 - 1981 R-body

---

Great information. Thanks for posting.

 

[YY1]

3/8" not 3/4".

Just to set the record straight.

 

[68 bee]

I have a set in the parts for sale section