Dana 80-drum or disc brakes?
I posted a while ago that my Dana 70 ended its life and it was suggested that I replace it with an 80. All my ducks are finally in a row and I am ready to get one, but I am undecided weather to go with the disc or drum brakes. I measured my fathers 02 3500 with discs and it all measures the same. I have a spare set of rims and the only thing I haven't done is see if the rims off my 93 will bolt to the 02 with out much modification. I figure I will have to change the master cylinder and at that time I will change to hydro boost. MrExtream posted a how to a short while ago on that.
Now my confusion:confused: is what is the benefit of the disc set up over the drum? Is it worth the EXTREAM amount of dollars and time to do the conversion to disc? The truck is not my daily driver, all I do is tow a 24' Econoline trailer and haul long distance (600+mi round trips). The truck is 275mi away from me at a friends garage and I have a lot of other mods I am going to do at the same time so time is limited. The mods I am also doing that I have, Power Stroke IC, HE351CW, 4" exhaust, rebuilt Getrag, and If I can find the money , South bend, DDP 80 sticks, new springs (2" skyjacker kit I am thinking?) Oh and it is a dually. Thanks in advance for your sugestions and comments.:cool: |
Why not upgrade your drum brakes AND add an exhaust brake to take the strain off? Just a random thought....
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Originally Posted by Riflemanusmc
(Post 2628390)
Why not upgrade your drum brakes AND add an exhaust brake to take the strain off? Just a random thought....
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Just my .02 Upgrade your drum rears and leave them. Shoes and brake clyds. Exhaust brake will save alot of wear and tear on all of your brake system. If you do allitle reading, from what IIRC the 80 has the same axle's and tubes as the 70. If thats so, better off dealing with what you have. Hope this helps.
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Originally Posted by Riflemanusmc
(Post 2628427)
Just my .02 Upgrade your drum rears and leave them. Shoes and brake clyds. Exhaust brake will save alot of wear and tear on all of your brake system. If you do allitle reading, from what IIRC the 80 has the same axle's and tubes as the 70. If thats so, better off dealing with what you have. Hope this helps.
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With a good EB, they do. Saves ALOT on having to use your brakes...DTW is that a GE U2BA in your avatar or one of Dillion's AREO's....
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Do they affect EGTs? The more think about it I like the drum with EB idea.
I think its the GE. I know its not the M134, Dillions has a large almost suppressor on the muzzle. Dillions look built better also. I would LOVE to play with one! |
What about using a 14 bolt out of a chevy. When i was thinking about converting to disk i would have been better off find a 14 bolt with disk brakes. Plus they are just as strong if not stronger than a 80 plus there are tons of parts avaible for them.
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Originally Posted by archer39
(Post 2628665)
What about using a 14 bolt out of a chevy.....
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Originally Posted by GLHS
(Post 2628731)
If you have a 4x4, are 3.54 gears available for 14 bolts?
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i am only going off what i remember from researching it about 4 months ago. I really can't remember about the 3.54 gears but for some reason i don't think they are. I am sure someone with more knowledge than me will chime in. Or check out pirate 4x4.com. there is a wealth of knowledge on there.
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I dont see what all the fuss is over disc brakes. Sure, they grab harder, but you have MUCH less frictional surface than with drums, leading to the chance of overheating. I installed a D80 (needed a new axle, and that's what was available that was cost effective), and with the increased brake area, it made braking MUCH better than the 12x3 of the D70. My vote is for D80 drums.
You will have to get some flat faced wheels to use on a D80, no matter what vintage you get. 1stGen= 5/8" coined fit; 2ndGen= 9/16" flat faced. |
Originally Posted by Jer12377
(Post 2628616)
Do they affect EGTs? The more think about it I like the drum with EB idea.
I think its the GE. I know its not the M134, Dillions has a large almost suppressor on the muzzle. Dillions look built better also. I would LOVE to play with one! |
Originally Posted by Riflemanusmc
(Post 2629083)
Yea, its a U2BA GE, We bring good things to light!! lol
Originally Posted by 92roughstock
(Post 2628985)
I dont see what all the fuss is over disc brakes. Sure, they grab harder, but you have MUCH less frictional surface than with drums, leading to the chance of overheating. I installed a D80 (needed a new axle, and that's what was available that was cost effective), and with the increased brake area, it made braking MUCH better than the 12x3 of the D70. My vote is for D80 drums.
You will have to get some flat faced wheels to use on a D80, no matter what vintage you get. 1stGen= 5/8" coined fit; 2ndGen= 9/16" flat faced. |
Just throwing this out there. When I installed rear disc. brakes I noticed a HUGE difference in braking. I will not go back to drums. Just my $.02.
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