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rear end

Started by saltmine19, July 25, 2007, 02:59:49 PM

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saltmine19

July 25, 2007, 02:59:49 PM
well i just blew up the rear end on my charger.. and its totally frigged.. um.. just wondering suggestions.. the guys says to put a 9 inch ford into it,.,,, just wondering the gearing on it.. what it should be...

i just recently had work done on the engine.. i put a roller cam into it.. and its bored over .60 and it had a 850 holley on it.. so i guess the rear end couldnt handle it so any suggestion

my73charger

#1
July 25, 2007, 03:55:58 PM
What rearend did you have in it?  Possibly 8 1/4?  I would suggest building an 8 3/4 way before a Ford 9 inch.  You can make it just as stout as a 9 inch.  If that doesn't do it you could go with a Dana 60 (9 1/4 rear).  Ford 9 inch?  No way man!

firefighter3931

#2
July 25, 2007, 03:59:46 PM
What he said.....use an 8 3/4 or build a Dana (9 3/4) if you plan or racing it lots. See if you can identify the rear end that's in the car now.


Ron
68 Charger R/T "Black Pig" Street/Strip bruiser, 70 Charger R/T 440-6bbl Cruiser. Firecore ignition  authorized dealer ; contact me with your needs

74Charger

#3
July 25, 2007, 04:10:07 PM
I too would recommend doing a 8 3/4 rearend.  Before a Phord 9".  I did a swap about 2-years ago.  I also chose to find a axle housing that was the exact same size as my 8 1/4" rear I had in it then.  I put some new Strange axles in it, green bearings, a 742 case with new 3:91 Moser gears and suregrip unit.   It made the swap very easy.  Everything aligned back up perfectly.  I did not have to worry about perches or anything.  And I was able to reuse the brake assemble from my 8 1/4" rear.  Thats diffentely the way to go.   

I went from having a 8 1/4" rear with 2:73 gears to a 8 3/4 rear with 3:91 suregrip.  Talk about night and day difference.  It felt like a 100 horse increase in power! :icon_smile_big:
74' Charger
03' 2500 4x4 CTD

Charger1973

#4
July 25, 2007, 04:41:41 PM
Yeah man just find a 71-74 B-body 8 3/4 and its an easy swap.   :2thumbs:

my73charger

#5
July 25, 2007, 05:59:06 PM
Did I say 9 1/4?  I meant 9 3/4  :D

saltmine19

#6
August 05, 2007, 10:54:54 AM
alright guys thanks for your help.. it had a 8 3/4 in it and the gears just went right to shit.. chunks everywhere..lol.. so i was able to find a 9 3/4 for a 63 jeep.. the will work in there.. thanks for ur help

idahogrumpy

#7
August 05, 2007, 11:10:06 AM
9 3/4 from a jeep? What jeep? Is it a sure grip type diff? (posi?) Oh well I guess it is still a MoPar LOL...   Grumpy
Too much to say
Too much to do
Too tired to get it done
Too stubborn to give up
GRUMPY
Modified 73 440 Charger, 03 Intrepid SXT, 02 Neon and 2001 Ram 1500 .

John_Kunkel

#8
August 05, 2007, 05:39:37 PM
Quote from: saltmine19 on July 25, 2007, 02:59:49 PM
well i just blew up the rear end on my charger.. and its totally frigged

Is the car an automatic? Were you under power in 1st gear when the rear end failed?

If so, it would be wise to check the sprag in the trans; they often fail when a rear end grenaded in 1st gear.
Pardon me but my karma just ran over your dogma.

mikesbbody

#9
August 05, 2007, 07:26:51 PM
dont go with the ford rear infact, i have heard alot of ford/chevy guy's use 8.3/4 or dana rear ends also lets not forget what ford stands for: federation of rusty dogs or backwards...driver return on foot

saltmine19

#10
August 06, 2007, 11:05:43 AM
no the car is not auto it is a 4 speed manual.......but it did seem to hesitate then  the rear end went
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