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What drive shaft are you using #972293
04/12/11 10:59 PM 04/12/11 10:59 PM
Joined: Aug 2009
Posts: 151
Canada BC
Steve Barton Offline OP
member
Steve Barton  Offline OP
member

Joined: Aug 2009
Posts: 151
Canada BC
I am just installing my Ladder bar system by chassis works and was wondering what drive shaft I should go to I am a 416 cub small block 650 hp 4 spd 833 Liberty pro shifted face plated with the mopar Aluminum diff Moser axles in a A body, I would like to step up from the stock diff yoke and drive shaft.

6582471-DSCN4061-Copy.JPG (158 downloads)
Homepage Pic's http://www.bluemelon.com/dodgeman/ Steve. New best 1.40 60' 9.99 Et 132.8 mph
Re: What drive shaft are you using [Re: Steve Barton] #972294
04/13/11 12:18 AM 04/13/11 12:18 AM
Joined: Jun 2010
Posts: 469
Tennessee
S
steeldust Offline
mopar
steeldust  Offline
mopar
S

Joined: Jun 2010
Posts: 469
Tennessee
I went 5.96 at 119 on NOS in a 1/8 mile at 3200 lbs DUSTER with stock drive shaft with ladder bars and i am building a 572 motor and i will use stock drive shaft with 456 gears but i got a dana 60 and if you are running a 83/4 rear end like in the picture the stock dive shaft is as strong as it. GOOD LUCK

Re: What drive shaft are you using [Re: Steve Barton] #972295
04/13/11 12:28 AM 04/13/11 12:28 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
I use a Dynotech shaft... its been great for years
http://www.dynotechengineering.com/
Re: What drive shaft are you using [Re: Steve Barton] #972296
04/13/11 12:28 AM 04/13/11 12:28 AM
Joined: Mar 2007
Posts: 3,300
Northern Indiana
Dunnuck Racing Offline
master
Dunnuck Racing  Offline
master

Joined: Mar 2007
Posts: 3,300
Northern Indiana
It seems to be up in the air which is better,steel or aluminum.I had an aluminum one built at a local driveshaft shop with 1350 solid u-joints for one of my cars.But steel or aluminum with 1350 joints should do you well.
You can always get it shortened for your Dana if you have to switch later.
Keith

www.dunnuckracing.com
Re: What drive shaft are you using [Re: Dunnuck Racing] #972297
04/13/11 12:36 AM 04/13/11 12:36 AM
Joined: Feb 2005
Posts: 5,207
Menomonee Falls
DemonDust Offline
master
DemonDust  Offline
master

Joined: Feb 2005
Posts: 5,207
Menomonee Falls
I have a Dynotech as well....

4"x.083" CM with 1350 joints. I had a manual in it and it handled 6500 rpm dumps no problem. It's behind a 904 now with no issues to this day..

SDG Motorsports
Hellcat Demon and Redeye Supercharger CNC Porting
https://www.sdgmotorsports.com/
Re: What drive shaft are you using [Re: DemonDust] #972298
04/13/11 12:41 AM 04/13/11 12:41 AM
Joined: Jul 2010
Posts: 676
COLUMBUS, OH
W
Whompin_Wedge Offline
mopar
Whompin_Wedge  Offline
mopar
W

Joined: Jul 2010
Posts: 676
COLUMBUS, OH
dynotech here as well

Casey
Re: What drive shaft are you using [Re: Whompin_Wedge] #972299
04/13/11 01:36 AM 04/13/11 01:36 AM
Joined: Aug 2009
Posts: 151
Canada BC
Steve Barton Offline OP
member
Steve Barton  Offline OP
member

Joined: Aug 2009
Posts: 151
Canada BC
Thanks guy's, the dynotech sounds like the way to go. It is my understanding that the 8 3/4 diff, if built write ,( rear brace and Aluminum third member ,good axles) is good for 800 hp all day long ? Its got 5 years on it and the gears still look knew. but that was with just over 400 hp to the rear tires, I have definitely stepped it up big time this year. I guess I will find out.

Homepage Pic's http://www.bluemelon.com/dodgeman/ Steve. New best 1.40 60' 9.99 Et 132.8 mph
Re: What drive shaft are you using [Re: Steve Barton] #972300
04/13/11 07:30 AM 04/13/11 07:30 AM
Joined: Feb 2007
Posts: 6,295
U.S.
M
moparniac Offline
master
moparniac  Offline
master
M

Joined: Feb 2007
Posts: 6,295
U.S.
I have a strange unit form dr diff ...

Mopar Performance
Re: What drive shaft are you using [Re: moparniac] #972301
04/13/11 07:44 AM 04/13/11 07:44 AM
Joined: Jan 2003
Posts: 2,567
Appalachia
RedRam Offline
master
RedRam  Offline
master

Joined: Jan 2003
Posts: 2,567
Appalachia
Dynotech user here also.
I run their MMC shaft w/1350 ends.

Re: What drive shaft are you using [Re: RedRam] #972302
04/13/11 09:10 AM 04/13/11 09:10 AM
Joined: Jan 2005
Posts: 866
Winnipeg ,Mb. CA.
chryco Offline
super stock
chryco  Offline
super stock

Joined: Jan 2005
Posts: 866
Winnipeg ,Mb. CA.
Strange steel w/ 3150 u - joints


Gas is fer washin' parts ....Alky`s fer drinkin' ...Nitro`s fer Racin'!
Re: What drive shaft are you using [Re: chryco] #972303
04/13/11 10:38 AM 04/13/11 10:38 AM
Joined: Jan 2004
Posts: 550
Ma
Voluster Offline
mopar
Voluster  Offline
mopar

Joined: Jan 2004
Posts: 550
Ma
I have a Dennys nitrous ready DS with 1350 joints
Re: What drive shaft are you using [Re: Steve Barton] #972304
04/13/11 11:48 AM 04/13/11 11:48 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
Quote:

Thanks guy's, the dynotech sounds like the way to go. It is my understanding that the 8 3/4 diff, if built write ,( rear brace and Aluminum third member ,good axles) is good for 800 hp all day long ? Its got 5 years on it and the gears still look knew. but that was with just over 400 hp to the rear tires, I have definitely stepped it up big time this year. I guess I will find out.



To me its the weight that will kill the diff... the
weight is the resistance... I have the same set up
as you, back braced, alum center, good axles but my
car is light... my axle show a twist(about 1 spine
of twist at the point where it inters the spool)...
also I get a controlled amount of spin on the tire
which has helped get a better 60'... dead hook tends
to pull the engine down too much....... JMO
Re: What drive shaft are you using [Re: MR_P_BODY] #972305
04/13/11 12:14 PM 04/13/11 12:14 PM
Joined: Aug 2009
Posts: 151
Canada BC
Steve Barton Offline OP
member
Steve Barton  Offline OP
member

Joined: Aug 2009
Posts: 151
Canada BC
Quote:

Quote:

Thanks guy's, the dynotech sounds like the way to go. It is my understanding that the 8 3/4 diff, if built write ,( rear brace and Aluminum third member ,good axles) is good for 800 hp all day long ? Its got 5 years on it and the gears still look knew. but that was with just over 400 hp to the rear tires, I have definitely stepped it up big time this year. I guess I will find out.



To me its the weight that will kill the diff... the
weight is the resistance... I have the same set up
as you, back braced, alum center, good axles but my
car is light... my axle show a twist(about 1 spine
of twist at the point where it inters the spool)...
also I get a controlled amount of spin on the tire
which has helped get a better 60'... dead hook tends
to pull the engine down too much....... JMO



I am hopping the car will weigh in at 2800- 2900 me in the car, you say you have a controlled amount of tire spin, how are you accomplishing that. I am running a Advanced clutch Ass that has adjustable press I'm hopping between that and tire press and the Ladder bars I can tune in my hook to prevent dead hook. ?

Homepage Pic's http://www.bluemelon.com/dodgeman/ Steve. New best 1.40 60' 9.99 Et 132.8 mph
Re: What drive shaft are you using [Re: Steve Barton] #972306
04/13/11 12:21 PM 04/13/11 12:21 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
I am hopping the car will weigh in at 2800- 2900 me in the car, you say you have a controlled amount of tire spin, how are you accomplishing that. I am running a Advanced clutch Ass that has adjustable press I'm hopping between that and tire press and the Ladder bars I can tune in my hook to prevent dead hook. ?



I run a 4-link and thats set(to the most extent)
but I use air pressure... I will vary the pressure
1/8-1/4 pound on different tracks once you find that
happy point on the tire... I run 7psi on my tire
and vary that up to 7 1/4 on a strong hooking track...
then you also have the shock to help control the hook
EDIT
At that weight you shouldnt have any problems with
the 8 3/4 with the good parts....JMO

Last edited by MR_P_BODY; 04/13/11 12:25 PM.
Re: What drive shaft are you using [Re: MR_P_BODY] #972307
04/13/11 12:50 PM 04/13/11 12:50 PM
Joined: Mar 2007
Posts: 12,008
Finally a HUSKER again
Moparnut426 Offline
I Live Here
Moparnut426  Offline
I Live Here

Joined: Mar 2007
Posts: 12,008
Finally a HUSKER again
Mine is a FAST SHAFT out of Iowa. I WOULDNT recomend them, it took them 3 times to get mine correct, and everytime it was "fixed" I could measure 1/16" - 1/8" of runout.

So stay away from FAST SHAFTS

Kasey
Re: What drive shaft are you using [Re: Steve Barton] #972308
04/13/11 01:39 PM 04/13/11 01:39 PM
Joined: Jan 2003
Posts: 13,343
Marion, South Carolina [><]
an8sec70cuda Offline
I Live Here
an8sec70cuda  Offline
I Live Here

Joined: Jan 2003
Posts: 13,343
Marion, South Carolina [><]
I twisted 2 stock driveshafts when I first broke into the 10s at 3700#. Got a 3" diameter "thick wall" shaft w/ 1350 joints built by my local driveshaft shop and haven't had any trouble w/ it. That was about 8 years ago.

I did have to replace it after the 727 exploded a couple years ago. Bent the shaft when it all came apart. I just had them build me another just like the first one.

When it comes time for me to buy a driveshaft for my road runner I'm going to buy one of the used NASCAR driveshafts off ebay.

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax

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