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post #1 of (permalink) Old 08-14-2001, 07:23 PM Thread Starter
 
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4wd vs 2wd rearends, any differences?

My daily driver is an '88 shortbox stepside, with a 350 auto and 3.08 gears in a 10 bolt. I wanted 3.73 posi gears for performance . However, No 2wd really came with this so I found a 10 bolt rear axle from a '89 4wd.So, can I just swap out the axles and drums to make it 5 lug or are the shafts different? are the spline counts and pitch the same?I dont mind changing shafts i just dont want to pull the carrier out.

Soon to be 1976 chev K-30, 427,t400,203,D60F,14Br,4.56
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post #2 of (permalink) Old 08-14-2001, 09:36 PM
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Re: 4wd vs 2wd rearends, any differences?

i would think it would be the same i did this on an 85 pick up i had a 4wd and found a 2wd rearend same ratio swapped otu the shafts and drum's even used the brakes from the 2wd they were better than mine it all worked fine

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post #3 of (permalink) Old 08-14-2001, 10:09 PM
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Re: 4wd vs 2wd rearends, any differences?

Should be fine, i did the same using a 2wd in a 4wd. I just shudder at the thought of gear lube. I must also say that cutting and replacing the U-bolts is definitely better than reusing your old ones.

Kevin

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post #4 of (permalink) Old 08-14-2001, 10:11 PM
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Re: 4wd vs 2wd rearends, any differences?

Just a thought......why don't you just change the gears????? That would be by far your best bet and the cheapest considering you are talking about swapping brakes and lug paterns anyway. To do a gear chance on a 10 bolt you are probably looking at around $500-600 and thats with labour and parts.

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post #5 of (permalink) Old 08-15-2001, 07:20 PM Thread Starter
 
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Re: 4wd vs 2wd rearends, any differences?

I thought about gear change, but like you said, $500-$600 bucks, i found a whole rearend out of a rolled truck for $200, so a little axle swapping only costs me the time, as I already have the axles and drums on my truck now.

Soon to be 1976 chev K-30, 427,t400,203,D60F,14Br,4.56
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