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Length Of A Driveshaft For A 8 3/4 BB 71 Charger #641643 03/16/10 08:11 AM 03/16/10 08:11 AM
Joined: Jul 2008 Posts: 403 NE Ohio 7 71 FJ6 Charger OP mopar
71 FJ6 Charger OP mopar 7 Joined: Jul 2008 Posts: 403 NE Ohio	Who knows the length center to center? its for an 8 3/4 383 car. Thanks '71 383HP FJ6 Charger SE

Re: Length Of A Driveshaft For A 8 3/4 BB 71 Charger [Re: 71 FJ6 Charger] #641644 03/16/10 11:24 AM 03/16/10 11:24 AM
Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH WILD BILL Senior Member of the Junior Dragster Club
WILD BILL Senior Member of the Junior Dragster Club Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH	It's a good thing my car is torn apart Not sure if I got the exact center but mine is 50.5 inches

Re: Length Of A Driveshaft For A 8 3/4 BB 71 Charger [Re: WILD BILL] #641645 03/16/10 01:53 PM 03/16/10 01:53 PM
Joined: Jan 2003 Posts: 1,120 MassHole Central rtman super stock
rtman super stock Joined: Jan 2003 Posts: 1,120 MassHole Central	Would that (presumably) be the same length for a 440 as well? Does it matter if behind a 727 or a manual? Converting a 318/904 to a 440/727 and need a new driveshaft.

Re: Length Of A Driveshaft For A 8 3/4 BB 71 Charger [Re: rtman] #641646 03/16/10 09:08 PM 03/16/10 09:08 PM
Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH WILD BILL Senior Member of the Junior Dragster Club
WILD BILL Senior Member of the Junior Dragster Club Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH	I'm not sure if there is a length difference between the 727 and manuals but there is a difference between the 904 and 727 drive shafts. SB or BB shouldn't matter. I have swapped drive shafts between the 71 (BB car) and Gina's 72 charger (SB car).

Re: Length Of A Driveshaft For A 8 3/4 BB 71 Charger [Re: 71 FJ6 Charger] #641647 03/16/10 10:28 PM 03/16/10 10:28 PM
Joined: Feb 2004 Posts: 7,196 Harrisburg, Pa. screamindriver master
screamindriver master Joined: Feb 2004 Posts: 7,196 Harrisburg, Pa.	Guys, everyone's car is different...Don't assume any length is the correct one for your car...There's just too many variables with suspensions, drivetrain components, etc... Best way to check for your length would be to set car at ride height with a full tank of fuel...Get the front yoke you want to use and push it in until it bottoms out...Then pull it back out 3/4 of an inch...Be sure to have the universal saddles parallel {at the 3 and 9 oclock} positions on the rear and front yoke...Then measure{at what would be the universal cap centerline} what you need for your exact shaft requirement...This is the only way to know what you need for sure...

Re: Length Of A Driveshaft For A 8 3/4 BB 71 Charger [Re: screamindriver] #641648 03/16/10 10:53 PM 03/16/10 10:53 PM
Joined: Jul 2008 Posts: 403 NE Ohio 7 71 FJ6 Charger OP mopar
71 FJ6 Charger OP mopar 7 Joined: Jul 2008 Posts: 403 NE Ohio	I'm using all factory parts..... '71 383HP FJ6 Charger SE

Re: Length Of A Driveshaft For A 8 3/4 BB 71 Charger [Re: screamindriver] #641649 03/16/10 11:03 PM 03/16/10 11:03 PM
Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH WILD BILL Senior Member of the Junior Dragster Club
WILD BILL Senior Member of the Junior Dragster Club Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH	Quote: Guys, everyone's car is different...Don't assume any length is the correct one for your car...There's just too many variables with suspensions, drivetrain components, etc... Best way to check for your length would be to set car at ride height with a full tank of fuel...Get the front yoke you want to use and push it in until it bottoms out...Then pull it back out 3/4 of an inch...Be sure to have the universal saddles parallel {at the 3 and 9 oclock} positions on the rear and front yoke...Then measure{at what would be the universal cap centerline} what you need for your exact shaft requirement...This is the only way to know what you need for sure... However, I have used the same DS I measured in both Gina's 72 which is set up at as a street strip car and has a stock leaf rear and my 71 which is lowered and has a 4 link rear. FWIW, I could probobly use a DS that is a 1/2" shorter

Re: Length Of A Driveshaft For A 8 3/4 BB 71 Charger [Re: WILD BILL] #641650 03/17/10 12:48 AM 03/17/10 12:48 AM
Joined: Jan 2003 Posts: 17,516 Las Vegas, NV 6bblgt I Live Here
6bblgt I Live Here Joined: Jan 2003 Posts: 17,516 Las Vegas, NV	there are 4 different transmissions available in a '71 Charger: 3-spd manual/4-spd manual/904 automatic/727 automatic there are 4 different rear differentials available in a '71 Charger: 7-1/4" * 8-1/4" * 8-3/4" * 9-3/4" there are 2 different u-joints available in a '71 Charger: 7260 (2-1/8" inside yoke) & 7290 (2-5/8" inside yoke) so there are quite a few STOCK combinations available 1971 Charger with 727 & 8-3/4" rear axle & "big" u-joints should be *Hollander interchange* lists (no transmission reference): 8-1/4" rear axle - & 8-3/4" rear axle - *** #2996 101 - 50-11/16" lg. x 3-1/4" dia. (7290 u-joints & 2-5/8" inside yoke) GG's "white book" shows: 8-3/4" rear axle - w/both transmissions *** #2996 101 - 50.68" lg. x 3-1/4" dia. (7290 u-joints & 2-5/8" inside yoke)

Re: Length Of A Driveshaft For A 8 3/4 BB 71 Charger [Re: 71 FJ6 Charger] #641651 03/17/10 01:30 AM 03/17/10 01:30 AM
Joined: Jun 2004 Posts: 244 N.E. Ohio B BigBrad enthusiast
BigBrad enthusiast B Joined: Jun 2004 Posts: 244 N.E. Ohio	I believe the one that was in my 4 speed car was 50.75 center to center.

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