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8.75 change out recommendation

Posted By: Dr Dave

8.75 change out recommendation - 06/30/15 07:03 AM

I have a 70 Chally with 8.75, 3.90:1, 340/ 727 and a 71 Cuda, Hemi, 5 speed (T600), 8.75, 3.23:1 ratio that I want to switch around. Would you swap the entire rear ends or just the chunk, which is easier? They are both in great working order.
Posted By: shocktrp

Re: 8.75 change out recommendation - 06/30/15 08:06 AM

Probably just the chunk.
Otherwise you're dealing with leaf springs, brake lines, etc.
Posted By: Spaceman Spiff

Re: 8.75 change out recommendation - 06/30/15 12:32 PM

Are they both large yoke, both small yoke, or is one large and the other small??
Makes a difference with u joint fitment.
Posted By: RapidRobert

Re: 8.75 change out recommendation - 06/30/15 05:46 PM

I'd do the whole axle, just me I dont care to deal with the gear oil mess/end play etc. it'd be heavier lifting but easier in the long run when done. Just have to bleed out the brakes. As said check that both are 7260 or 7290 yokes
Posted By: crackedback

Re: 8.75 change out recommendation - 06/30/15 06:11 PM

I'd swap the pumpkins.

You going to get back with me about the relays kits and wiring?
Posted By: Paul_Fancsali

Re: 8.75 change out recommendation - 06/30/15 09:25 PM

Just change the chucks out good way to change fluid which should be done every few years anyway If ypou run into Ujoint issues get the 7260-7290 adapter u joint.
Posted By: Dr Dave

Re: 8.75 change out recommendation - 07/01/15 01:15 AM

Cant I just swap out pinion yokes?
Posted By: RapidRobert

Re: 8.75 change out recommendation - 07/01/15 04:44 AM

Quote:
Cant I just swap out pinion yokes?
742/742 yes I believe.
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