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03-07-2014, 08:17 PM
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#1 |
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Registered User
Join Date: Nov 2007
Location: La Puente, CA
Posts: 18
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12 bolt rear diff?
I have a 68 c-10 stepside that originally had a 250 straight 6. I am going to be installing a 350 out of a 89 g30 and a t400 trans out of a 90 chevy truck. I counted the bolts on the cover and it has 12. Will my original rear diff be able to handle the v8 or am I better off trying to find a different diff assembly. Or can I upgrade the internals of the diff. I plan to just have a few performance bolt ons and that's about it.
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03-07-2014, 08:24 PM
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#2 |
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Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
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Re: 12 bolt rear diff?
Yea the 12 bolt truck rear is plenty strong for most any street bound small block. Until your drag racing and making serious power the 12 bolt is just fine. The 12 bolt was used behind everything from the inline 6 up to big blocks.
__________________
Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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03-07-2014, 08:59 PM
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#3 |
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Registered User
Join Date: Aug 2009
Location: Newberry,FL
Posts: 277
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Re: 12 bolt rear diff?
 The stock 12 bolt in mine has seen a lot of abuse for 20+ years. Only just broke the stock ring gear 3 weeks ago doing stupid stuff, but I rebuilt it, droped in a new limited slip, gears, and bearing caps and she should be good for a long time, but my 355 is a little radical though so it should be plenty strong for what you are doing.
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1970 Chevrolet C-10 w/355sbc  2010 Silverado Daily Driver  1971 Mercedes 280sl project car 
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