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How strong is the 85' z/28 3.23 rear end?

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Old 08-03-2018, 09:12 PM
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How strong is the 85' z/28 3.23 rear end?

I just bought a 375hp 305 motor. I'm rebuilding my t5 so it can hold up a little, but I'm worried about the rear end holding up. I'm going to run big tires in the rear just because I love the look. (and functionality of course) Do you think it will hold up? I don't know the torque numbers. If you don't think so what rear end would you recommend?
Old 08-03-2018, 09:29 PM
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Re: How strong is the 85' z/28 3.23 rear end?

Same as any other 80ish - 2002 10-bolt. Which is to say, not very.

But not to worry: the T-5 will mostly protect the rear axle. The 305 factor will help too. It'll probably be fine.
Old 08-03-2018, 10:22 PM
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Re: How strong is the 85' z/28 3.23 rear end?

I just wanna know how you got 375 hp from a 305? Boost?
Old 08-03-2018, 10:29 PM
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Re: How strong is the 85' z/28 3.23 rear end?

You will grenade the trans before the rearend
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