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05-07-2013, 07:51 AM
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#1 |
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Registered User
Join Date: Mar 2013
Location: Grand Island, Ne.
Posts: 1,110
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drop block hole width and dia.
Sup guys. Im gonna try to make some drop blocks for my 72 coil spring rear end. Can anyone measure the width between the U-bolts and the dia. of eeach side for me. I'm at work and don't have the truck with me.
Thank you for youor help.
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J. Vess, 6'6", Gearhead, Welder, Fabricator, Nutcase 1955 Chevy Stepside "Dudley" My daily http://www.67-72chevytrucks.com/vboa...d.php?t=760288 1972 Chevy C10, Project "Chevro~Layed out" Nether Storm Build Thread http://67-72chevytrucks.com/vboard/s...23#post6007523 |
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05-07-2013, 12:27 PM
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#2 |
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Registered User
 
Join Date: May 2011
Location: Missoula, MT
Posts: 934
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Re: drop block hole width and dia.
I used a 7/8" drill to make the holes for the block so there was a little bit of wiggle room for alignment, but I also used 3/4" rod for the u-bolt (some people use a smaller rod, I advise 3/4"). There should be 3 1/2" of gap between the sides of the u bolt and you want the bolt just to slide right in so you need the center of the holes to be 4 3/8" apart.
3 1/2" + (.5 x 7/8"= hole center x 2)= 4 3/8" I also explain it on my build thread if you want to take a look!
__________________
69 GMC C10 build thread- http://67-72chevytrucks.com/vboard/s...d.php?t=501676 03 Silverado build thread-http://67-72chevytrucks.com/vboard/s...d.php?t=591582 |
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05-07-2013, 01:11 PM
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#3 |
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Registered User
Join Date: Mar 2013
Location: Grand Island, Ne.
Posts: 1,110
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Re: drop block hole width and dia.
Thank you bud! you are the man!
__________________
J. Vess, 6'6", Gearhead, Welder, Fabricator, Nutcase 1955 Chevy Stepside "Dudley" My daily http://www.67-72chevytrucks.com/vboa...d.php?t=760288 1972 Chevy C10, Project "Chevro~Layed out" Nether Storm Build Thread http://67-72chevytrucks.com/vboard/s...23#post6007523 |
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05-07-2013, 10:16 PM
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#4 |
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Registered User
Join Date: Mar 2012
Location: Okanagan Valley, BC, Canada
Posts: 1,237
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Re: drop block hole width and dia.
Holes should be 4.25" on center. I also drilled 7/8" holes in mine to allow ease of installation.
Posted via Mobile Device
__________________
#teamlongbed "I refuse to go disc brakes. I actually love drum brakes. It makes for an adventure." - 50bomb 1978 Chevy shop truck - static 6/8" 1970 GMC 1500 - Accuair eLevel Resto-mod http://67-72chevytrucks.com/vboard/s...d.php?t=537497 |
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05-08-2013, 06:21 AM
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#5 |
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Registered User
Join Date: Mar 2013
Location: Grand Island, Ne.
Posts: 1,110
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Re: drop block hole width and dia.
I made some yesterday with yalls specs. perfect fit. Now I just need to get some longer u bolts. I talked to bud that is gonna hook me up.
__________________
J. Vess, 6'6", Gearhead, Welder, Fabricator, Nutcase 1955 Chevy Stepside "Dudley" My daily http://www.67-72chevytrucks.com/vboa...d.php?t=760288 1972 Chevy C10, Project "Chevro~Layed out" Nether Storm Build Thread http://67-72chevytrucks.com/vboard/s...23#post6007523 |
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