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Old 07-13-2014, 05:08 PM   #1
70CHEVYBB
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What rearend. 3/4 to

I think it's an eaton. I haven't pulled the cover to check the ratio. The spud says nothing about a ratio. I thought all 3/4 tons with eatons had 4:11 or 4:56
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Old 07-13-2014, 06:08 PM   #2
jocko
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Re: What rearend. 3/4 to

stock 3/4 ton ratio was 4.10, optional was the 4.56 (true of eaton or dana 60 rears). If the truck is unaltered and there's no SPID info, it should be a 4.10 rear.
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Old 07-13-2014, 06:35 PM   #3
70CHEVYBB
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Re: What rearend. 3/4 to

On my way home with it I did a quick burnout and left two black marks. I am guessing its a posi but will know when I pull the cover. do the full floaters have the same looks as a standard posi carrier.
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