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Old 08-13-2013, 01:07 PM   #1
JimJones
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Rear axle advice 4x4

Hey guys
Let's say you were doing a frame off on a 4x4 C10. You also had big plans to run a crate motor and a bad ass 700r4. I'm looking at the Chevy performance crate 427 which is rated at 470hp so let's just say 500hp.

Will a 12 bolt suffice? Or do I need to step up to a 14 bolt or a Dana 60? What upgraded do I need to get a bullet proof 100k mi axel that will withstand the occasional burnout, brake torque, fishtail etc etc without grenading. Once again specs are 500 hp and 33" tires. I have no plans for any extreme abuse but I want to be able to have some fun once and a wile without it costing me a bunch of money in repairs.

To me it makes no sense to spend 1.5k on a 10 bolt rear end and then have it break the first time I burn out.
I remember a buddy of mine built a really nice 3/4 ton Silverado I was directly behind him as he pulled out of the drive thru. There was a little bit of water which made for some nice tire spinning but the instant the tires hooked up to the dry pavement his rear end blew up. It was a horrible sound of snapping crunching and popping.
I don’t want this to happen to me. This is why to me it makes more sense to spend a bit more money now rather than a lot of money later.
By the same token I don’t just have money to burn either so if 12 bolt can be built to withstand this kind of treatment then I'm all for it. I have no desire to haul around the weight associated with an axel built for a Kenworth semi truck if I don’t have to.
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Old 08-13-2013, 01:43 PM   #2
jjzepplin
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Re: Rear axle advice 4x4

I got a pumped 406 and 700r4 and my 14 bolt has a gov loc and it has never failed and like the occasional burnout. Just don't put in a TCI convertor ask me how I know...
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Old 08-13-2013, 06:03 PM   #3
argonaut
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Re: Rear axle advice 4x4

What size tires would we be running on this 4x4?
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Old 08-13-2013, 07:16 PM   #4
LONGHAIR
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Re: Rear axle advice 4x4

It says 33" in the second paragraph.
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Old 08-13-2013, 08:25 PM   #5
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Re: Rear axle advice 4x4

Oh, right. 33" isn't too big. I say beefed up 12 bolt. The much lighter weight will make it easier for those fishtails.
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1972 K5 Blazer CST, Turquoise
1966 K20 Short Fleet Pickup, Big Ugly
1964 C10 Short Fleet, Gertrude

2001 Porsche 911 Carrera
1996 Ford Bronco XLT
1980 Jeep Wagoneer

2008 Honda CBR1000RR
2005 Honda RC51
1981 Honda CB750C


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Old 08-13-2013, 11:09 PM   #6
lowrollin70gmc
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Re: Rear axle advice 4x4

You could also look for a six lug 9.5" 14 bolt semi-floater. They were in the 88-98 trucks both 2 and 4wd 2500s. Sometimes people think they're gold but I've seen them sold for $100-200 if you look in the right spots.
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