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Old 07-29-2012, 12:16 PM
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4x4 transmissions

I have a 1979 chevy silverado 1/2 ton 4x4. It has a 4 speed manual tranns. I have a 91 chevy also 4x4 heavy half. Its got a th400 in it. Now can i put the half ton axles in the heavy half casing. Also what is the advantage of the th400 compared to the 4 speed manual.

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Old 08-01-2012, 04:27 PM
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I would say yes.
Not really an advange from one to the other, just personal preference.
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Old 08-02-2012, 05:57 PM
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i was thinking of the gearing. i would have to buy eight lug wheels and im on a tight budget. six lug axles will fit in heavy 1/2 ton casings right? i have 4.11 and 4.10 gears for my half ton axles but not really sure how to install them and like i said on a tight budget.
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Old 08-02-2012, 07:28 PM
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'91 4x4 with F44 RPO has upgraded HD suspension/ brakes ( N/A to a '73-'87 ) and a Semi Floater 9.5" 14 bolt.. If you have 8 lugs on the '91, it's a 2500. plain and simple. You could swap the entire rear end over to the '79, but as far as swapping the gears, the '79 has a 28 spline 10 bolt, and any variation of the '91 truck you describe will have ither a 9.5" semi floater 14 bolt or a 10.5" full floater 14 bolt, so stuff just won't swap.

I didn't mention front stuff because it won't swap
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Old 08-02-2012, 08:25 PM
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Yea listen to him.
As far as wheels go, chevy never changed they're bolt patterns for trucks. Ever. So any year wheels will work.
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Old 08-03-2012, 09:49 AM
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ok explain to me semi floater. rear axle does not have big hub sticking out of it. it looks like a regular axle. that six bolt hub is a full floater if i am correct. can someone explain what is the difference between a 2500 and a 1500hd. 2001 chevy silverado.
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Old 08-06-2012, 11:50 PM
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Quote:
Originally Posted by stallion0606 View Post
ok explain to me semi floater. rear axle does not have big hub sticking out of it. it looks like a regular axle. that six bolt hub is a full floater if i am correct. can someone explain what is the difference between a 2500 and a 1500hd. 2001 chevy silverado.
Diff's with 6 lug wheel are semi float.

How many bolts are in the rear cover's of the differential's you wanting to swap parts.?
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Old 08-08-2012, 05:35 AM
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2500 / 8 bolt rims - 3/4 ton pick up
1500 (HD) / 6 bolt rims - 1/2 ton pick up
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Old 08-08-2012, 09:06 AM
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Quote:
Originally Posted by 95silverado View Post
2500 / 8 bolt rims - 3/4 ton pick up
1500 (HD) / 6 bolt rims - 1/2 ton pick up
your Forgetting the 2500 LD which is pretty much the same as the 1500 with F44 pkg. There was no 1500 HD or 2500 HD in those years. 2500 was ither an LD or a regular 2500 truck

1500 w/ F44 pkg has HD suspension and a SF 9.5" 14 bolt.
2500 LD has HD suspension and a SF 9.5" 14 bolt.

Regular 1500 would have an 8.5" 10 bolt- 30 spline
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Old 08-08-2012, 04:44 PM
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No expert, just what I knew.
What years were these? Learning something new every day...
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Old 08-08-2012, 08:43 PM
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'88-'98. There were a couple years where the 2500 LD did not exist, but the F44 pkg existed since about 1988.. Depended on the ordering options available in that year.
Any 1500 Diesel automatically has the F44 pkg also
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Old 08-12-2012, 05:03 PM
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2001 chevy silverado 1500HD has 8 lugs. what is the difference between that and a 3/4 ton? CURIOUS
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