1978 wiper drive cam
- Thread starter ROAD/TRACK
- Start date
I've even had my cousin that is a CNC expert and engineer at Total Seal (makes race car piston rings) tell me if there is a way to mod to the 74-77 cam to go with it.
ROAD/TRACK
New Member
Do we want 2 speed or 3 speed parts?
A MOPAR drawing I am looking at shows that only 2 speed uses a cam setup?
Is the 3 speed just a crank arm???
A MOPAR drawing I am looking at shows that only 2 speed uses a cam setup?
Is the 3 speed just a crank arm???
I've done 2 of them already. They must of been 2 speeds because the armature of the motor was straight out from the firewall like the ones on 78's. The 3 speed motors have the armature that is at 90 degrees and parallel to the firewall.
3 speed wiper motor
3 speed wiper motor
This is what bolts to my 78 wiper motor now and uses the 74-78 small cam.
You have to fab the offset as pictured to go on the wiper motor or the wiper linkage geometry will be way off. Still have the 78 2 speed variable wiper motor and I welded the small end of the linkage rod to my 78 linkage rod end that had the big cam.
You have to fab the offset as pictured to go on the wiper motor or the wiper linkage geometry will be way off. Still have the 78 2 speed variable wiper motor and I welded the small end of the linkage rod to my 78 linkage rod end that had the big cam.
ROAD/TRACK
New Member
So,that's a 1978 pin welded on a 1977 2 speed crank arm?
Other way around......1977 pin welded on to a 1978 crank arm.
ROAD/TRACK
New Member
1978 wiper cam
Sucess! :yaayy:
Murray sent us a crank arm with a longer pin and it
works with the re-pro cam set. The installer did have to modify
the locater slot in the crank arm slightly!
Sucess! :yaayy:
Murray sent us a crank arm with a longer pin and it
works with the re-pro cam set. The installer did have to modify
the locater slot in the crank arm slightly!
ROAD/TRACK
New Member
P.S.
Not sure what car the crank arm is from!
Not sure what car the crank arm is from!
commando1
Old Man with a Hat
Not even sure what I'm looking at in your pic.
Could you post a couple of shots from different angles?
Could you post a couple of shots from different angles?
My wiper cam fix cost $3.......:laughing4:
commando1
Old Man with a Hat
I knew enough not to buy a '78.... 
ROAD/TRACK
New Member
The crank arm on the left is the original from the 78 Newport.
The arm on the right is the longer/taller pin crank arm from ???
You will have to ask Murray what it came off of.
Dont have anymore pics, it's on the car now!
It came off 74-77 Formal 2 speed motor.
I fixed mine for $3.....I've posted extensive info and pictures on how to do it my way.
I have no idea what exactly has to be done with Murray's fix.
I have no idea what exactly has to be done with Murray's fix.
phil anderson
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How do you get it to snap into the arm? I am having difficulties.
saylor
Senior Member
we should repop 1978s mod and sell it via a new FCBO parts line - whos gonna incorporate?
NewportRbod
Member
I need this cam for my 1979 Newport (I also have a 74 Newport 2 dr aka Big Bird) Anyone aware of replacement part availability? I need it so I can drive the rain (so my wife says...she has no sense of fun).
Both the 78 C-Body cam and 79 R-Body cam are big cams.
However...they are different and don't interchange. I had a cam from a 79 R-Body years ago when I was working a viable replacement for my 78 NYB and that is how I discovered the 79 won't work on a 78 and vice versa. I don't have the 79 cam anymore. I don't know if the 79 R-body cam is available and I don't have a 79 parts book to find the part number either. There are a few R-body guys on this site that may be able to help.
Pete.....any help with us would be appreciated.
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