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Read his original post. He wants to KEEP the SBP.
The bottom bolts on my 1973 are HUGE compared to the earlier stuff. I'd say they are at least 1/2".
Understood, however just trying to explain in no specific words, why reinvent the wheel so to speak.
Well I'm guessing he doesn't want to change the rear to LBP?
Or here is a kit. 1962-1976 Mopar A Body Small Bolt Pattern Power Disc Brake Conversion Kit
Maybe not. I converted both cars to BBP. Did it for simplicity over the 4 pot KH setup, parts availability, and availability of many more different styles of wheels. Plus I did it inexpensively with boneyard parts and mix n match w big diameter cordoba rotors and big bore cordoba calipers I believe you can get 14x5.5 rims in a steelie BBP.
What happened to arrow360?
I don't know, this has turned out to a 3 way conversation without him.
I hope I didnt chase him off by extolling the BBP disc brake virtues.
It was a little difficult to get accurate measurements, but it looks like 7/16" bolts on the top (2) and 5/8" on the bottom.
Lost in the translation maybe?
I went out to measure the bolts on the car. They appear to be 7/16" & 5/8" bolts!
Ok the 2 spindles you saw in my pics were for 10" drum on the left and 9" drum on the right which one looks like yours? Actually top one is 9" bottom one is 10" I just went back and looked at pic
The "bottom" image has what appears to be the same bolt pattern, but the bottom bolts are considerably larger than the top.
If your 73 has 10" front drums, it also has BBJ UCAs. If your going to convert to the 4 piston KH setup you will need the SBJ UCAs.
I have a full set I removed from my 71 dart, small bolt pattern, rotors, spind,les upper and lower control arms, 4 piston calipers. I am in Dallas Texas so shipping may be an issue. PM me if you like
He said 9" drum car originally Matt
Non swaybar tabbed LCAs are all the same all the way to 76. Only difference is swaybar tabbed arms. 67-72, and 73-76
Mine has 9" drums.
I must have missed that. I do know I got a nice clean set of BBJ UCAs off a 74 valiant w 10" drums. Was a junkyard score at $50
see my post i have what ya need
Mine has no sway bar.
These are drilled for 4 or 4-1/2 inch BC on the same rotors and hubs, but requires an inner wheel diameter of 12.92 inches. It would allow for upgrading wheels in the future, if need be. I don't have my spare wheel handy to measure at the moment but this may be your best option, as it uses the factory six cylinder spindles. 1973 DODGE DART Wilwood Front Medium-Duty Disc Brake Kits 140-2719-B