Posted By: catman56
LBP 7-1/4 Rear - 08/14/12 02:47 AM
Was there a 7-1/4 rear with a LBP ever produced in an A-Body and if so what year?
LBP 7-1/4 Rear
Posted By: RapidRobert
Re: LBP 7-1/4 Rear - 08/14/12 04:21 AM
'73-'76 A body. I believe only with BBP single piston discs up front
Posted By: bordin34
Re: LBP 7-1/4 Rear - 08/14/12 05:14 AM
My old 74 318 Valiant had the big bolt pattern 7-1/4.
Posted By: Jim_Lusk
Re: LBP 7-1/4 Rear - 08/14/12 05:47 AM
Quote:
'73-'76 A body. I believe only with BBP single piston discs up front
Posted By: catman56
Re: LBP 7-1/4 Rear - 08/15/12 02:51 AM
So I do have a set of LBP axles from a 73-76 7-1/4 rear..The next question is,will they fit in the SBP axled housing I have in my 71 Dart? From the bearing specs from NAPA,it does not seem so..The OD and ID of the bearings are different..
Posted By: MPerry
Re: LBP 7-1/4 Rear - 08/15/12 02:57 AM
I had a 76 Feather Duster with a LBP 7 1/4.
Posted By: Kern Dog
Re: LBP 7-1/4 Rear - 08/15/12 03:49 AM
I believe that the axle housing and shafts are narrower on the 73-76 models.
Posted By: bordin34
Re: LBP 7-1/4 Rear - 08/15/12 06:43 AM
I think they are the same width but they appear narrower because the front track is wider due to the disk brakes.
Posted By: RapidRobert
Re: LBP 7-1/4 Rear - 08/15/12 02:42 PM
Quote:iirc they dont interchange, as you said bearings etc I think are different
So I do have a set of LBP axles from a 73-76 7-1/4 rear..The next question is,will they fit in the SBP axled housing I have in my 71 Dart?
Posted By: JohnRR
Re: LBP 7-1/4 Rear - 08/15/12 04:04 PM
Quote:
So I do have a set of LBP axles from a 73-76 7-1/4 rear..The next question is,will they fit in the SBP axled housing I have in my 71 Dart? From the bearing specs from NAPA,it does not seem so..The OD and ID of the bearings are different..
also realize you would have to change the brakes , the axle offset of the 2 are more than likely different .
I think you answered your own question , if the ID is different, that is the part the axle rides on , then the axle won't fit the bearing in your rear properly . If the OD is different then the bearing that fits the new axle will not fit the housing .
Posted By: DoctorDiff
Re: LBP 7-1/4 Rear - 08/15/12 04:50 PM
The axles and housings are completely different, so they do not interchange.
Posted By: catman56
Re: LBP 7-1/4 Rear - 08/15/12 10:29 PM
Thanks everyone for all the input..I was thinking I would cut the LBP axles .100" and use the SBP bearings..I would also switch the retaining plates due to the 5 vs 4 hole issue..The only thing that might be a problem is the brake back spacing as JohnRR stated..Just trying to avoid spending approx $1000 to set up an 8-3/4 with LBP axles right now..
Posted By: JohnRR
Re: LBP 7-1/4 Rear - 08/16/12 12:12 AM
Quote:
Thanks everyone for all the input..I was thinking I would cut the LBP axles .100" and use the SBP bearings..I would also switch the retaining plates due to the 5 vs 4 hole issue..The only thing that might be a problem is the brake back spacing as JohnRR stated..Just trying to avoid spending approx $1000 to set up an 8-3/4 with LBP axles right now..
You should be able to do an A body rear for a lot less than that even piecing one together.
Posted By: Winchester 73
Re: LBP 7-1/4 Rear - 08/16/12 03:27 AM
dont forget aspen volare rears from the jyd-dang near a bolt in.
Posted By: Kern Dog
Re: LBP 7-1/4 Rear - 08/16/12 04:38 AM
If by "dang near" you mean spring pads that are several inches apart, sure.....Its real close. 
Posted By: nomore65BelvJim
Re: LBP 7-1/4 Rear - 08/16/12 07:35 AM
76-80 F rear is about 1" wider than a 72 A 7-1/4, perch to perch.
Posted By: rtidd440
Re: LBP 7-1/4 Rear - 08/16/12 09:49 AM
Little bit off topic, but I heard that the guys who build lawn tractor pull tractors will actually pay real money for those 7 1/4 diffs.
Posted By: Rug_Trucker
Re: LBP 7-1/4 Rear - 08/17/12 12:31 AM
If my info is correct the BBP all have 10" drums. Just sold one.
Posted By: Rhinodart
Re: LBP 7-1/4 Rear - 08/17/12 12:48 AM
I actually sold one of the too for $100 a couple weeks ago! 