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Old 02-03-2016, 07:12 PM   #1
Russ.W.
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Question Rear leaf's to coil's, and 6 lug to 5 lug - what year was the changeover?

Few question for you good folks, if you don't mind.

Specific to 67-72 C10 2wd shortbeds, I'm trying to find out when rear coil suspension become an option over leaf's, and in which year became standard?

Same question for 6 lug to 5 lug changeover.

I'm considering ordering a complete rear-end housing from Moser.

Their website lists two options for our trucks:

- 1963-69 Chevy C10 Pick Up Truck
- 1970-72 Chevy C10 Pick Up Truck

They offer no option of suspension type (leaf or coil), nor lug count (5 or 6).

Does this mean rear coils weren't introduced until 1970?
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Old 02-03-2016, 07:17 PM   #2
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Re: Rear leaf's to coil's, and 6 lug to 5 lug - what year was the changeover?

Chevy had coils as standard, and GMC had leafs as standard. Either truck could be ordered either way. 71 went to 5 lug in 2wd.
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Old 02-03-2016, 08:40 PM   #3
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Re: Rear leaf's to coil's, and 6 lug to 5 lug - what year was the changeover?

I appreciate that, thanks.
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Old 02-03-2016, 10:05 PM   #4
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Re: Rear leaf's to coil's, and 6 lug to 5 lug - what year was the changeover?

There is a difference in the width of rear axle depending on what year also
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'70 C-10 short fleet 427BB TH400 (SOLD)
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Old 02-03-2016, 10:36 PM   #5
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Re: Rear leaf's to coil's, and 6 lug to 5 lug - what year was the changeover?

Quote:
Originally Posted by jeh View Post
There is a difference in the width of rear axle depending on what year also
Can you elaborate?
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Old 02-03-2016, 11:17 PM   #6
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Re: Rear leaf's to coil's, and 6 lug to 5 lug - what year was the changeover?

Quote:
Originally Posted by Russ.W. View Post
Can you elaborate?
Well I hope someone with more knowledge will chime in, but I think a 67-70 had a narrower rear end and possibly a '70 could have been either and 71-72 were wider rear ends. I'm not for sure on this so someone feel free to correct me.
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Old 02-04-2016, 12:08 AM   #7
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Re: Rear leaf's to coil's, and 6 lug to 5 lug - what year was the changeover?

70 rear ends could be either width. I think it was a mid year change. It would still be 6 lug however. I think they were about 2" wider.
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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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