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| 7 1/4 to 8 3/4 swap https://www.slantsix.org/forum/viewtopic.php?t=7083 |
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| Author: | Rob Simmons [ Thu Oct 02, 2003 7:57 am ] |
| Post subject: | 7 1/4 to 8 3/4 swap |
Can I use 8 1/4 U bolts and spring/shock perches to mount an 8 3/4 in my Dart? That's all I could find at the local pull a part yard. I don't like the idea of the rubber insulators. I want good handling, not a cushy ride. Any suggestions? |
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| Author: | Dart270 [ Thu Oct 02, 2003 2:19 pm ] |
| Post subject: | |
Yep Rob, the 8.25" bolts and perches will work fine for an 8.75" swap. What rubber insulators are you speaking of? Lou |
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| Author: | kesteb [ Thu Oct 02, 2003 3:18 pm ] |
| Post subject: | |
The F-bodies et al, have the rear springs wrapped in rubber where they meet the spring perches. This makes for a quiet ride. This is not compatiable with the A-bodies thu. Also the lower shock mounts are differant then from the A-bodies. |
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| Author: | Doc [ Thu Oct 02, 2003 4:32 pm ] |
| Post subject: | |
I was never a fan of the rubber isolated springs so you may want to keep looking. Any shock plates from an A,B, C or E body 8 3/4 will work so check a few more wreckers, the U-Bolts are for 3 inch axle tubes and are pretty common. DD |
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| Author: | Rob Simmons [ Fri Oct 03, 2003 5:33 am ] |
| Post subject: | |
I looked at them a little closer last night. I may be able to use the ones I bought by using just the bottom plate with some modifications. I will look around for some correct ones before I go through the effort. I may have just wasted $15 on the 8 1/4 ones. No biggie. Not the first time or the last! Thanks for the replies everyone. Rob |
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| Author: | Rob Simmons [ Tue Oct 28, 2003 1:22 pm ] |
| Post subject: | |
A member of my Mopar Club had the perches for $10. I got new U bolts at AutoZone. They were 3 1/8 ", but they worked fine. I tossed the 8 1/4 perches and U bolts in the scrap metal pile! Patience is a virtue I don't always possess. |
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| Author: | Slant Cecil [ Tue Oct 28, 2003 8:51 pm ] |
| Post subject: | |
Rob, check your perches to see if your spring centering bolt is a good fit. The Mopar perches are based on a newer set up and have a larger hole than the 60s/70s perches. Some people make a bushing to make up the difference. If your in luck, your perches are from Moroso, Competion Eng or another supplier, they have the early centering hole. Cecil |
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| Author: | Rob Simmons [ Wed Oct 29, 2003 7:22 am ] |
| Post subject: | |
Hey Cecil, The perches were off of an older C Body that had the smaller centering hole. I was debating about using the 8 1/4 bottom plate only and making a bushing to make it work. The C Body route was definitely a better way to go. |
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