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Do I NEED a Dana?
#1047076
08/04/11 11:35 AM
08/04/11 11:35 AM
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Joined: Jun 2006
Posts: 834
Beavercreek, Ohio
OA5599
OP
super stock
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OP
super stock
Joined: Jun 2006
Posts: 834
Beavercreek, Ohio
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Yes...I know. This there is nothing left of this dead horse to beat. But I notice a lot of guys getting away with an 8-3/4, so I'm looking for advice about my own personal application. 69 Cuda weighs around 3550 lbs with driver. 418 SB that gets it down the track 7.30 at 94.5 1/8th and 11.30s or so 1/4 at 115ish. 60 ft with M/T E/T streets is 1.62-1.63. Stock suspension. 727 with a "tight" 10" converter. Will footbrake 2200ish if pushed hard. Launched at 2000. This car sees 95% street/cruise time. Goes to the track 4-5 times a year at the most. At the moment, it has a stock 8-3/4 with 3:91 gears. A dana will be a huge snowball effect and will run me at least $3-4k for the swap. Any suggestions of what to do to my 8-3/4 to put up with this? Does it need a spool, etc? Remember, it IS a street car most of the time. Is it just a question of "when" not "if" it will let go? If you need anymore info, just let me know. I would really like to avoid the Dana route if I can, so I am looking for your honest opinions based on your experiences. Thanks 
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Re: Do I NEED a Dana?
[Re: OA5599]
#1047080
08/04/11 12:05 PM
08/04/11 12:05 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I'm not saying it will blow or not but if I were to keep the 8 3/4 I would back brace it, a set of decent axles and do the aftermarket carrier caps.... if you didnt go with the caps I would run load bolts on the caps 
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Re: Do I NEED a Dana?
[Re: MR_P_BODY]
#1047081
08/04/11 12:08 PM
08/04/11 12:08 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
I'm not saying it will blow or not but if I were to
keep the 8 3/4 I would back brace it, a set of decent
axles and do the aftermarket carrier caps.... if you
didnt go with the caps I would run load bolts on the
caps
Mr. P when you do the caps don't you have to have it line bored?
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Re: Do I NEED a Dana?
[Re: Mr.Yuck]
#1047082
08/04/11 12:14 PM
08/04/11 12:14 PM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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I used to run an 8-3/4 in my 440 dart 11.09 best at 121mph but my car was 3270 with me, yours is quite heavy for an A body, i also used moser shafts, 742 centre.
Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36
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Re: Do I NEED a Dana?
[Re: OA5599]
#1047083
08/04/11 12:15 PM
08/04/11 12:15 PM
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Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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I dunno,  I`ve only been beating on mine for 20 years or so(not this exact set)so it`s hard to say if yours will live.  Go have some fun and at LEAST put some after market axles it it and I personally run Dutchmans.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Do I NEED a Dana?
[Re: tboomer]
#1047084
08/04/11 12:21 PM
08/04/11 12:21 PM
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Joined: Jun 2006
Posts: 834
Beavercreek, Ohio
OA5599
OP
super stock
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OP
super stock
Joined: Jun 2006
Posts: 834
Beavercreek, Ohio
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Starting to feel a little better. I an not familiar with what back bracing is. Still a bit of a "noob". I would need brakes (I'm guessing I couldn't use my current ones with the Dana)...which leads to big bolt pattern, which leads to new wheels, etc.
Last edited by OA5599; 08/05/11 02:05 AM.
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Re: Do I NEED a Dana?
[Re: Mr.Yuck]
#1047085
08/04/11 12:23 PM
08/04/11 12:23 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
I'm not saying it will blow or not but if I were to
keep the 8 3/4 I would back brace it, a set of decent
axles and do the aftermarket carrier caps.... if you
didnt go with the caps I would run load bolts on the
caps
Mr. P when you do the caps don't you have to have it line bored?
They need to be machined but not line bored(theres
threads in there)... just milled
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Re: Do I NEED a Dana?
[Re: OA5599]
#1047087
08/04/11 12:27 PM
08/04/11 12:27 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Starting to feel a little better. I an not familiar with what back bracing is. Still a bit of a "noob". I was basing 3-4k off of Dr Diff's site for a complete Dana 60 setup costing $3000. Then I would need brakes (I'm guessing I couldn't use my current ones with the Dana)...which leads to big bolt pattern, which leads to new wheels, etc.
Here's a back brace on a 9"... same set up
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Re: Do I NEED a Dana?
[Re: OA5599]
#1047090
08/04/11 12:47 PM
08/04/11 12:47 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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By the way... I'm still running a 8 3/4 in my car... my car is light but I run a 1.19 60' in the high 8s... back braced and now I run a alum center that has big caps... even my Strange axles have twist in them
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Re: Do I NEED a Dana?
[Re: B G Racing]
#1047091
08/04/11 12:55 PM
08/04/11 12:55 PM
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Joined: Mar 2009
Posts: 1,058
bigfork mn
dragram440
super stock
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super stock
Joined: Mar 2009
Posts: 1,058
bigfork mn
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I have a couple dozen passes on mine. I have 35 spline axles, spool, and 3.91 motive gears with a back brace. Car weighs 3800 lbs with me in it. Foot brake 1.51 best 60' 10.63 @ 128 mph. The rest of the runs are between 10.63 and 10.80. I have had it apart to check everything out two times now and everthing looks like new still. Im going to keep running mine for now.
67' charger 499 RB
10.57 at 127
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Re: Do I NEED a Dana?
[Re: OA5599]
#1047092
08/04/11 01:09 PM
08/04/11 01:09 PM
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Joined: Oct 2003
Posts: 11,684
W. Kentucky
justinp61
I Live Here
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I Live Here
Joined: Oct 2003
Posts: 11,684
W. Kentucky
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Quote:
Starting to feel a little better. I an not familiar with what back bracing is. Still a bit of a "noob". I was basing 3-4k off of Dr Diff's site for a complete Dana 60 setup costing $3000. Then I would need brakes (I'm guessing I couldn't use my current ones with the Dana)...which leads to big bolt pattern, which leads to new wheels, etc.
BTW my Dana was less than $2000 shipped, this with a spool and race axles.
Look here http://www.strangeengineering.net/catalog/072.html
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Re: Do I NEED a Dana?
[Re: viperblue72]
#1047094
08/04/11 07:39 PM
08/04/11 07:39 PM
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Joined: Mar 2008
Posts: 553
Kentucky
clovis
mopar
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mopar
Joined: Mar 2008
Posts: 553
Kentucky
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If you are going to buy axles, caps, backbrace and maybe even a spool, I would think about spending toward the Dana. I just put a Dana together for about $1,300. That included buying a junk yard rearend, having it cut, axles, housing ends, gears(used), spool, yoke, u-joints, pads, bearings and drive shaft shortened.
If you compare the expenses of what you are going to add to your 8 3/4 (axles-$350, backbracing-$100, caps & milling-$150) $600 to the cost of the dana $1300 minus what you can get for your 8 3/4 as it sits say $500, $800 net, it is only $200 to upgrade.
My car (3300lbs) was run a long time on a 8 3/4 with stock axles at high 10's. I would check them alot but never a sign of a problem. So as I said from the start if I was going to buy axles and maybe a spool and was thinking about any power increases I would go ahead and spend my money towards the dana, but as you sit today you will probably be fine with what you have.
'75 Plymouth Duster
Phase I 451 906/590/2-660 10.75/126
Phase II 451 Stage VI/590/1050 9.82/135
Phase III 383 906/Victor-Pump gas 11.30/119
"For by grace you have been saved through faith. And this is not your own doing; it is the gift of God,"
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Re: Do I NEED a Dana?
[Re: clovis]
#1047095
08/04/11 08:07 PM
08/04/11 08:07 PM
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Joined: Oct 2009
Posts: 1,267
North, Alabama
D-50
pro stock
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pro stock
Joined: Oct 2009
Posts: 1,267
North, Alabama
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I ran a 8 3/4 under my Demon it was probably 3400 lbs with me in it. It had a billet cap and stock axles. It was going 6.40's in the 1/8 with a 1.36 60 ft on a 100 shot nos.
1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
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