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| 8.25" & 8.75" compatability https://slantsix.org/forum/viewtopic.php?t=12512 |
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| Author: | chi/6er [ Mon Apr 04, 2005 10:05 pm ] |
| Post subject: | 8.25" & 8.75" compatability |
I was wondering since all the shock plates for sale, they usually say 8.75" or 9.25", do they fit the 8.25" too? Are the U bolts for springs(3" by 7" long) and axle housing the same too? The backing plates for an 8.75" rear, does the SBP and LBP use the same plate? thanks.....Jerry |
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| Author: | steponmebbbboom [ Tue Apr 05, 2005 2:30 am ] |
| Post subject: | |
there are no LBP 8&3/4" rears. |
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| Author: | Charrlie_S [ Tue Apr 05, 2005 4:50 am ] |
| Post subject: | |
Quote: there are no LBP 8&3/4" rears.
I'm sorry, but that is not correct. There are no "A" body LBP 8 3/4 rears, they are all small bolt pattern (4 inch), but all other 8 3/4 rears are large (4 1/2) bolt pattern
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| Author: | 70valiant [ Tue Apr 05, 2005 5:40 am ] |
| Post subject: | |
8 1/4 and 8 3/4 rears both use the same shock plates and U-bolts. they haved the same spring perches and 3" axle tubes. 10" brakes all use the same backing plates and wheel cylinders. IIRC even 7 1/4 10 " brakes use the same backing plates because the later 7 1/4's flair out the end of the tubes. |
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| Author: | Charrlie_S [ Tue Apr 05, 2005 9:31 am ] |
| Post subject: | |
Quote: 10" brakes all use the same backing plates and wheel cylinders. IIRC even 7 1/4 10 " brakes use the same backing plates because the later 7 1/4's flair out the end of the tubes.
I could be wrong, but I think the 10 x 1 3/4 brakes use a different backing plate then the 10 1/2 brakes. I have two rears with 10 brakes sitting on the ground. One with 1 3/4 and one with 2 1/2, and the offset from the mounting flange looks different. Don't have time to take the drums off, to measure.
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| Author: | steponmebbbboom [ Tue Apr 05, 2005 10:37 am ] |
| Post subject: | |
Quote: Quote: there are no LBP 8&3/4" rears.
I'm sorry, but that is not correct. There are no "A" body LBP 8 3/4 rears, they are all small bolt pattern (4 inch), but all other 8 3/4 rears are large (4 1/2) bolt pattern |
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| Author: | 70valiant [ Tue Apr 05, 2005 12:52 pm ] |
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I think you got me there Charlie. I know I put 7 1/4 brakes on an 8 1/4 and they worked great. It would make sense to me that 3/4" wider drums would need a deeper offset to the backing plate |
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| Author: | chi/6er [ Wed Apr 06, 2005 3:25 am ] |
| Post subject: | 8.25" - 8.75" rear |
Thanks everyone...got my answer... was at a swap meet and there were some shock plates real cheap for 8.75", guy said it was only for 8.75" and 9.25" and not 8.25"...my loss, since I didn't buy them....Jerry |
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