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Old 04-28-2010, 12:33 AM   #1
chas350
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70k20 on 73-87 frame pros and cons

Lets hear them guys!
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71 K10 long fleet (sons truck) new 370hp 355, sm465 np205, 3.73's 33's
70 K20 long fleet
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Old 04-30-2010, 06:28 AM   #2
Mudder
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Re: 70k20 on 73-87 frame pros and cons

If you can weld and cut a little I think it is a good idea.
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Old 05-01-2010, 08:57 AM   #3
chas350
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Re: 70k20 on 73-87 frame pros and cons

Hey Mudder, thanks.

Anybody else?

Build threads maybe?
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"I'll Procrastinate Tomorrow"
quote by LEEVON


71 K10 long fleet (sons truck) new 370hp 355, sm465 np205, 3.73's 33's
70 K20 long fleet
98 G3500 work van
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Old 05-01-2010, 10:08 AM   #4
propanemudtruck
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Re: 70k20 on 73-87 frame pros and cons

This is what I did in my 4x4 build thread. The kickup in the 73-87 frame will interfere with the back of the cab - so you'll either need about 6" BODY lift, chanell the back of the cab for the frame kickup or eliminate the frame kickup. I shortened my longbox frame 27" so it's about the same as a K5. I believe if you started with a K5 frame you wouldn't need as much fab work.

Good luck!
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Old 05-01-2010, 12:16 PM   #5
Mudder
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Re: 70k20 on 73-87 frame pros and cons

My truck is on a 77 chassis. I can show you what the mounts look like on mine. I do not have a high hump floor. I burb frame may work well too.
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