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8 3/4 to a Dana #2744472 02/19/20 01:51 AM 02/19/20 01:51 AM
Joined: Nov 2004 Posts: 3,517 pacific northwest S Stroker Scamp OP master
Stroker Scamp OP master S Joined: Nov 2004 Posts: 3,517 pacific northwest	I am going to order up a Dana 60 for the Scamp I am assuming will need to get a new drive shaft? Info appreciated footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip 73 Duster 340 street strip 12.79 @ 105

Re: 8 3/4 to a Dana [Re: Stroker Scamp] #2744474 02/19/20 02:13 AM 02/19/20 02:13 AM
Joined: Aug 2011 Posts: 2,851 Pattison Texas CSK master
CSK master Joined: Aug 2011 Posts: 2,851 Pattison Texas	Originally Posted by Stroker Scamp I am going to order up a Dana 60 for the Scamp I am assuming will need to get a new drive shaft? Info appreciated When I did the swap had to get the shaft shortened, get the 60 installed & see if the old shaft fits, if not measure & get it fixed. 1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5

Re: 8 3/4 to a Dana [Re: Stroker Scamp] #2744494 02/19/20 08:21 AM 02/19/20 08:21 AM
Joined: Jan 2005 Posts: 1,771 Keymar, MD DusterKid top fuel
DusterKid top fuel Joined: Jan 2005 Posts: 1,771 Keymar, MD	Originally Posted by Stroker Scamp I am going to order up a Dana 60 for the Scamp I am assuming will need to get a new drive shaft? Info appreciated If rear ends are installed in the same location your drive shaft will have to be shorten.

Re: 8 3/4 to a Dana [Re: DusterKid] #2744505 02/19/20 09:09 AM 02/19/20 09:09 AM
Joined: Jan 2003 Posts: 13,345 Marion, South Carolina [><] an8sec70cuda I Live Here
an8sec70cuda I Live Here Joined: Jan 2003 Posts: 13,345 Marion, South Carolina [><]	Originally Posted by DusterKid Originally Posted by Stroker Scamp I am going to order up a Dana 60 for the Scamp I am assuming will need to get a new drive shaft? Info appreciated If rear ends are installed in the same location your drive shaft will have to be shorten. Somewhere around an inch if I recall correctly. 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

Re: 8 3/4 to a Dana [Re: Stroker Scamp] #2744514 02/19/20 09:41 AM 02/19/20 09:41 AM
Joined: Oct 2007 Posts: 4,205 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,205 New York	Is the pinion stem at the same vertical height? The Ford 9" is lower, affects the angle. Boffin Emeritus

Re: 8 3/4 to a Dana [Re: polyspheric] #2744524 02/19/20 10:16 AM 02/19/20 10:16 AM
Joined: Dec 2007 Posts: 12,587 Great Neck,LI,new york hemi-itis I Live Here
hemi-itis I Live Here Joined: Dec 2007 Posts: 12,587 Great Neck,LI,new york	Good time to think about saving some weight. HEMI-ITIS has no cure. My condition is fully BLOWN!!

Re: 8 3/4 to a Dana [Re: hemi-itis] #2744527 02/19/20 10:19 AM 02/19/20 10:19 AM
Joined: Apr 2003 Posts: 3,506 Tulsa, Oklahoma 340Cuda master
340Cuda master Joined: Apr 2003 Posts: 3,506 Tulsa, Oklahoma	Yes it will weigh more but it will not slow your car down because of the increased efficiency.

Re: 8 3/4 to a Dana [Re: 340Cuda] #2744596 02/19/20 01:10 PM 02/19/20 01:10 PM
Joined: Oct 2007 Posts: 4,205 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,205 New York	IIRC a test was run with an 8-3/4 vs. 60, and the ET was really close. The extra efficiency almost exactly made up for the extra 75 lb. weight gain. IDR anything easy that saves weight on the Dana, though. Smaller brakes? Boffin Emeritus

Re: 8 3/4 to a Dana [Re: polyspheric] #2744603 02/19/20 01:28 PM 02/19/20 01:28 PM
Joined: Jan 2003 Posts: 1,289 Tucson AZ, M MadMopars pro stock
MadMopars pro stock M Joined: Jan 2003 Posts: 1,289 Tucson AZ,	Originally Posted by polyspheric IIRC a test was run with an 8-3/4 vs. 60, and the ET was really close. The extra efficiency almost exactly made up for the extra 75 lb. weight gain. IDR anything easy that saves weight on the Dana, though. Smaller brakes? Although I don't have the weights in front of me, going with a spool should be worth something. [img]https://s9.postimg.cc/6fbjxzfvv/48-2016-_Drag-_Weekend-_Best-_Burnouts-lpr.jpg[/img] 73 GTX 4407278 3/4 69 DART GT 4404 SPEEDDANA 73 ROAD RUNNER 4514 SPEEDDANA 64 F100 3834 SPEED9" 75 DODGE D300 4404 SPEEDDANA 99 DODGE RAM 3500 4X4 DUALLY... ON 38"s

Re: 8 3/4 to a Dana [Re: an8sec70cuda] #2744621 02/19/20 02:26 PM 02/19/20 02:26 PM
Joined: Jan 2003 Posts: 25,718 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,718 Rio Linda, CA	Originally Posted by an8sec70cuda If rear ends are installed in the same location your drive shaft will have to be shorten. Quote Somewhere around an inch if I recall correctly. 1 1/8" to be exact Centerline of Axle Shaft to Center of Universal Yoke 8 3/4" 12.35" 9 3/4" 13.47" The INTERNET, the MISinformation superhighway

Re: 8 3/4 to a Dana [Re: John_Kunkel] #2744850 02/20/20 08:53 AM 02/20/20 08:53 AM
Joined: Jan 2003 Posts: 13,345 Marion, South Carolina [><] an8sec70cuda I Live Here
an8sec70cuda I Live Here Joined: Jan 2003 Posts: 13,345 Marion, South Carolina [><]	Going from a locker/suregrip to a spool in a Dana is worth something like 20 lbs. Might be more than that actually. 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

Re: 8 3/4 to a Dana [Re: an8sec70cuda] #2745361 02/22/20 01:05 AM 02/22/20 01:05 AM
Joined: Jan 2003 Posts: 8,016 Polson, MT DoctorDiff master
DoctorDiff master Joined: Jan 2003 Posts: 8,016 Polson, MT	All else being equal, a 35 spline S-60 with a traction differential is 50 lbs heavier than a 30 spline 8 3/4" with a traction differential. Contact info

Re: 8 3/4 to a Dana [Re: DoctorDiff] #2745427 02/22/20 10:33 AM 02/22/20 10:33 AM
Joined: May 2003 Posts: 13,184 aZLiViN J J_BODY I Live Here
J_BODY I Live Here J Joined: May 2003 Posts: 13,184 aZLiViN	The weight that was lifted from my shoulders on my S60 over the 8.75 that was in the car was much higher than 50lb! Set it.... and forget it!

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