Which rear end would I be better off with? - Page 2

ATI Performance Products · 03-21-2015, 07:05 PM

Quote:

Originally Posted by GTX JOHN

We have run 8 3/4 in our Volare / Aspen Stockers for many years with only
a couple of Failures in the Very Heavy Wagon at 3620 to 3850 Weight.

I would consider a looser converter 5200 (360) - 5400(318) to go with the 5:13 Gears which should be right a low elevation.

My Chassis guy said with same amount of lightning the Dana would be
40 to 50 heavier than 8 3/4. Does anyone know if he is right?

We are changing the Challenger over to a Dana right now. I need to run a 5.13 at our weight and the 8 3/4 would ratio would break in less than 10 passes. But a 4.88 would last 100 passes usually. We are 3470 lbs. And yes it sucks to break a gear with a 904 and then worry about the sprag - even with the big sprag we made for them it was 50/50 weather or not it was junked. - Also of note is that I will have 4, nice 8 3/4 pumpkins to sell! 2 Alum and 2 steel.

LNorton · 03-22-2015, 12:09 AM

Quote:

Originally Posted by ATI Performance Products

We are changing the Challenger over to a Dana right now. I need to run a 5.13 at our weight and the 8 3/4 would ratio would break in less than 10 passes. But a 4.88 would last 100 passes usually. We are 3470 lbs. And yes it sucks to break a gear with a 904 and then worry about the sprag - even with the big sprag we made for them it was 50/50 weather or not it was junked. - Also of note is that I will have 4, nice 8 3/4 pumpkins to sell! 2 Alum and 2 steel.

^ This! Go Dana and forget about it.

SST3193 · 03-23-2015, 05:34 AM

Any Dana experts have a suggestion, for a 1976 Ford housing, that houses 3.50:1 only? We built a 4-linked street car for a friend and would like to have a 4.10-ish range ratio. With the tall rear tires and 3.5 it sure does good on the Interstate but rarely leaves city streets.

GTX JOHN · 03-23-2015, 07:13 AM

I did not know their are 4 different weight Dana 60s. Does know how to tell
them apart. The ones I have used are center sections out of 80s Trucks
with Chrome Moly Tubes.

FED 387 · 03-23-2015, 12:07 PM

no expert here but from my experience there is a HD cast into the housing look for it top of rib left side of the "heaviest" Dana 60 ,otherwise the diameter of the axle tubes determines the lightness of the housing with 3 inch tubes being the heaviest---the OEM centers are really the same---supposedly there is a "501" Ford Dana 60 that is the lightest but I do not know what vehicles it came in--FED 387

Michael K · 03-23-2015, 01:38 PM

I've been considering replacing my 8-3/4 with the Strange 60 housing. Pricing seems good.

older racer · 03-23-2015, 02:15 PM

hi, the four dana 60's are, lightest is in a 67 to 72 ford 1/2on pickup, next is mopar b and e body cars, next 3/4 ton pickups and heaviest is 1 ton pickups. I found an article in a four wheeler magazine years ago. they listed the dana's . the 1/2 ton ford one has passenger car ends on it, easy to spot. it weighs 32 # more than 8 3/4 . has 3 " tubes. also, I found a dana 60 from a J 20 jeep pickup. it has 2 3/4" tubes on it , passenger car ends as well.

Rod Greene · 03-23-2015, 05:50 PM

If you are building one for a race car. Do it the right way. Strange S60 center molly tubes, 40 spline ultra lite axles from MW Aluminum spool back cut ring gear. It will be bullet proof and only about 20lbs heavier than a back braced ready to run 8 3/4 that will break anyway. If you are worried about changing gear ratios at a race it is really quite simple. With the S60 you have adjusters for back lashand preload. You set your pinion gear up with bearings and shims. You can change gears in under an hour.

03-23-2015, 05:34 AM	#13
SST3193 Junior Member Join Date: Oct 2009 Posts: 37 Likes: 2 Liked 2 Times in 2 Posts	Re: Which rear end would I be better off with? Any Dana experts have a suggestion, for a 1976 Ford housing, that houses 3.50:1 only? We built a 4-linked street car for a friend and would like to have a 4.10-ish range ratio. With the tall rear tires and 3.5 it sure does good on the Interstate but rarely leaves city streets.

03-23-2015, 07:13 AM	#14
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,708 Likes: 2,733 Liked 2,398 Times in 679 Posts	Re: Which rear end would I be better off with? I did not know their are 4 different weight Dana 60s. Does know how to tell them apart. The ones I have used are center sections out of 80s Trucks with Chrome Moly Tubes. __________________ John Irving 741 Stock 741 Super Stock

03-23-2015, 12:07 PM	#15
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,399 Likes: 482 Liked 320 Times in 172 Posts	Re: Which rear end would I be better off with? no expert here but from my experience there is a HD cast into the housing look for it top of rib left side of the "heaviest" Dana 60 ,otherwise the diameter of the axle tubes determines the lightness of the housing with 3 inch tubes being the heaviest---the OEM centers are really the same---supposedly there is a "501" Ford Dana 60 that is the lightest but I do not know what vehicles it came in--FED 387

03-23-2015, 01:38 PM	#16
Michael K Member Join Date: Nov 2012 Location: Minnesota Posts: 101 Likes: 89 Liked 62 Times in 17 Posts	Re: Which rear end would I be better off with? I've been considering replacing my 8-3/4 with the Strange 60 housing. Pricing seems good.

03-23-2015, 02:15 PM	#17
older racer Member Join Date: Aug 2010 Posts: 208 Likes: 13 Liked 63 Times in 24 Posts	Re: Which rear end would I be better off with? hi, the four dana 60's are, lightest is in a 67 to 72 ford 1/2on pickup, next is mopar b and e body cars, next 3/4 ton pickups and heaviest is 1 ton pickups. I found an article in a four wheeler magazine years ago. they listed the dana's . the 1/2 ton ford one has passenger car ends on it, easy to spot. it weighs 32 # more than 8 3/4 . has 3 " tubes. also, I found a dana 60 from a J 20 jeep pickup. it has 2 3/4" tubes on it , passenger car ends as well. Last edited by older racer; 03-23-2015 at 02:17 PM.

03-23-2015, 05:50 PM	#18
Rod Greene Senior Member Join Date: Mar 2002 Location: TN Posts: 530 Likes: 406 Liked 241 Times in 81 Posts	Re: Which rear end would I be better off with? If you are building one for a race car. Do it the right way. Strange S60 center molly tubes, 40 spline ultra lite axles from MW Aluminum spool back cut ring gear. It will be bullet proof and only about 20lbs heavier than a back braced ready to run 8 3/4 that will break anyway. If you are worried about changing gear ratios at a race it is really quite simple. With the S60 you have adjusters for back lashand preload. You set your pinion gear up with bearings and shims. You can change gears in under an hour. __________________ Rod Greene Real men shift for them selves. Slowly working on TA Challenger for D,E/S and a 72 Challenger for SS/K, L as if I don't have enough other projects.