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Old 10-01-2004, 07:20 PM   #1
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Disc swap questions.

Swapping my 70 4x4 drum front to a disc setup. First Q is the date code on the ring gear appears to be 75 and the "main cap" inside also appears to be 75. Is there any other way to be sure of year? or is it not important.. Is there any tips or tricks to doing this swap? Any special parts i will need, or should i just buy parts for a 75 front end? Both fronts are 1/2 ton dana 44s. Any help or suggestions are appreciated. Thanks, Eric
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67 gmc custom lwb dakota truck. Sold...And bought back
69 swb 4x4 project (in progress)
70 c-10 lwb texas truck
70 4x4/BB/bkts/posi/tach(retired)
70 swb (wifes)
70 jimmy camper
71 K-5 factory 2wd
71 cheyenne 4x4/tach/posi/ plow rig
71 Cheyenne20 BB, buckets, tach, tilt, 4 speed
72 jimmy CST wyoming rig
72 jimmy Colorado rig
72 lifted texas 4x4 3/4 ton burb
65 fury conv. 383/auto
65 chrysler 300 "L" 413 auto
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Old 10-02-2004, 09:03 AM   #2
JimKshortstep4x4
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If the front differential is a 75, it should work very well. The axles are greatly improved over the older ones and the backing plates are much better. I cannot think of any difficulties that you will run into.

Jim
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Old 10-02-2004, 10:59 PM   #3
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Thanks for the encouraging words jim. New question... what brake hoses should i get for this? Would the 71-72 hoses be the easiest? Also, do i have to change my prop valve? My truck already has power drums. If so, will a 71-72 2 wheel drive prop valve work? Thanks for any input.
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67 gmc custom lwb dakota truck. Sold...And bought back
69 swb 4x4 project (in progress)
70 c-10 lwb texas truck
70 4x4/BB/bkts/posi/tach(retired)
70 swb (wifes)
70 jimmy camper
71 K-5 factory 2wd
71 cheyenne 4x4/tach/posi/ plow rig
71 Cheyenne20 BB, buckets, tach, tilt, 4 speed
72 jimmy CST wyoming rig
72 jimmy Colorado rig
72 lifted texas 4x4 3/4 ton burb
65 fury conv. 383/auto
65 chrysler 300 "L" 413 auto
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Old 10-03-2004, 10:44 PM   #4
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TTT. Also, would it be easier to just take MC and booster from a 72 2wd to use on my 4x4? Any opinions are good...
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67 gmc custom lwb dakota truck. Sold...And bought back
69 swb 4x4 project (in progress)
70 c-10 lwb texas truck
70 4x4/BB/bkts/posi/tach(retired)
70 swb (wifes)
70 jimmy camper
71 K-5 factory 2wd
71 cheyenne 4x4/tach/posi/ plow rig
71 Cheyenne20 BB, buckets, tach, tilt, 4 speed
72 jimmy CST wyoming rig
72 jimmy Colorado rig
72 lifted texas 4x4 3/4 ton burb
65 fury conv. 383/auto
65 chrysler 300 "L" 413 auto
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Old 10-03-2004, 11:50 PM   #5
68w/sbc406
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you need the disc/drum master and prop valve. i would think they would be the same from 2wd to 4wd cause i have never heard any different and i have asked around alot
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1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags

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