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| ratio change 7 1/4 https://slantsix.org/forum/viewtopic.php?t=18798 |
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| Author: | Bren67Cuda904 [ Tue Jul 25, 2006 9:44 am ] |
| Post subject: | ratio change 7 1/4 |
I'd like to change my ratio to 3.23 from 2.76. Would it be better to swap in the 7 1/4 rear with 3.23 gears or just use the gears? |
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| Author: | SlantSixDan [ Tue Jul 25, 2006 9:50 am ] |
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Depends if you can easily find a 7¼" A-body 3.23 rear axle. Be advised that with the extreme engine mods/upgrades you've been talking about, a 7¼" would not be a wise choice. Better to swap in an 8¼" unit. |
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| Author: | Bren67Cuda904 [ Tue Jul 25, 2006 9:57 am ] |
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I may have found one in my area. I ve heard it both ways- some say the 7 1/4 will hold alot and some just like bigger. |
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| Author: | Galactica5 [ Tue Jul 25, 2006 5:17 pm ] |
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2.76 is a great ratio for the road but I would try to get a heftier rear axle for anything bigger than a stock / six car. |
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| Author: | RossKinder [ Wed Jul 26, 2006 10:07 am ] |
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Quote: I may have found one in my area. I ve heard it both ways- some say the 7 1/4 will hold alot and some just like bigger.
That rear end will take a lot - of what it was designed for.
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| Author: | Bren67Cuda904 [ Wed Jul 26, 2006 10:16 am ] |
| Post subject: | |
Did any of these 7 1/4 rear come behind any V8s? My HP goals are in the 250-290 range. |
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| Author: | mopar_nocar [ Wed Jul 26, 2006 11:03 am ] |
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i had one in a 72 dodge dart w/a 318. it did finally grenade, but that was after MUCH abuse. and many many miles. put one right back into it and never had a problem...even had one in a Mirada if i am not mistaken also a 318 car. didn't get to break that one, as it was crushed by some guy in a chevy p/u. erring on the side of caution would say to put an 8.25 in there, but i have a 7.25 in my 65 and until it breaks thats whats gonna' stay. sb |
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| Author: | Bren67Cuda904 [ Wed Jul 26, 2006 2:29 pm ] |
| Post subject: | |
What breaks when they go? |
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| Author: | Jeb [ Wed Jul 26, 2006 5:48 pm ] |
| Post subject: | |
Quote: What breaks when they go?
Usually break the cross shaft or blow the spider gears to pieces. I have already shredded one 7 1/4 under my Duster. Ripped the spider and cross shaft to pieces.
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| Author: | VDART [ Wed Jul 26, 2006 6:16 pm ] |
| Post subject: | 7.25 rear |
my 69 dart with a 318 has a 7.25 rear --I'm assuming non=performance cars were outfitted with these while the 340's & larger got the beefer stuff!! |
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