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Old 02-11-2009, 12:28 AM   #1
sofixy89
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rear end question

Ok, i searched everywhere but i cant seem to find the answer.

I got 1969 1/2 ton c10 2wd with 3 seed manual. I am gonna put turbo 350 trenny in it that is rated for 750 hp. so i want my rear end to stand up to it. its got 12 bolt rear end but i dont think its actual rear end that they put in cars its different. does anybody know what it is rated for and if i can build it up to specs. i know i am gonna need different drive shaft can u let me know where can i get one that will handle that much power and what size.

And if i do have to go with ford 9 inch is there a kit available for my truck?

its a lot of questions but i am new to American muscle.
i will be running 427 small block built for 91 octane running around 500 hp plus 100 shot of nitrous. and use is street and strip with street legal slicks.
Thank you ahead
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Old 02-11-2009, 12:42 PM   #2
Gumby'sC20
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Re: rear end question

The 12 bolts rears, from what I've heard, are near-bulletproof. Just make sure the gearing of the rear end is what you need for a high speed strip truck vs. a high-torque towing/hauling vehicle.
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Old 02-11-2009, 06:20 PM   #3
sofixy89
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Re: rear end question

even 12 bolt truck rear end? i would not think it could handle that much power in stock form. i just dont wanna buy rims and stuff for it and than break it the next day...
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Old 02-11-2009, 06:48 PM   #4
jbristo67
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Re: rear end question

12 bolt should be fine. If you wanted to run a ford 9 inch you can order a kit to run any rear end you want under your truck.
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Old 02-11-2009, 06:49 PM   #5
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Re: rear end question

You should be able to get whatever bolt pattern axels you want in a ford 9 inch too but nothing with the word ford in it is going to touch my truck.
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Old 02-11-2009, 09:09 PM   #6
smoked68
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Re: rear end question

I have not torn my 12 bolt out yet but if I do a 9"w/ Detriot locker is the way to go. They are bullet proof, and that blue oval will get you down the track better.
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Old 02-11-2009, 09:40 PM   #7
Mike C
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Re: rear end question

You can beef it up, but a car 12 bolt is stronger. If you really put the power out you are talking about and hook it up at 4000#, you will break it. A lot. 12 bolts don't do well with big tires and lots of traction. At last count I think 6 was how many I had broken in my Jimmy. I'd be looking for a Dana 60 and have new ends put on for semi float 5 lug axles. Especially if you have a coil spring truck. Much cheaper than doing a custom 9".
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Old 02-11-2009, 10:28 PM   #8
sofixy89
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Re: rear end question

thanks for replies. is drive shaft connection to your rear end the same in chevy 12 bolt and ford 9 inch? sorry i am new to this stuff
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