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#1 |
Registered User
Join Date: Oct 2009
Location: Great White North
Posts: 1,520
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Guys, I'm looking for some help with measurements of the U bolt on the Lh side of the frame that the tank straps bolt to. Mine broke when I was taking it out. I planned on fabbing a new one but now I can't find it. Can someone please measure their's. I need to know:
1) What is the length between the U or center to center 2) What is the overall length of the U bolt arms 3) What is the length of the thread part or the arms Thanks for help on this. Below is a couple of borrowed pics of the part I'm talking about. ![]()
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Jeff. '72 Blazer K5 "Camshaft opinions are like belly buttons; everyone has one and no two are alike" My Blazer Build: http://67-72chevytrucks.com/vboard/s...d.php?t=626752 My Engine Build: http://67-72chevytrucks.com/vboard/s...d.php?t=637336 |
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#2 |
Registered User
Join Date: Jul 2010
Location: Knoxville,TN
Posts: 1,185
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Re: Fuel tank strap, U Bolt dimensions ?
I just had mine out today , give me time for dinner and I will get the info for you.
Scott
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1972 Custom Deluxe 20 4x4 burb 1971 GMC SWB CST 4x4 1972 GMC k20 4x4 (X- brush truck ) 1971 Chevy CST Blazer 4x4 1971 Chevy C/10 1970 Cab Chassis C30 157" 1971 Cab Chassis Custom 30 Deluxe 157" 292/4spd ( Napco Replica ) 1988 Chevy V30 4x4 wrecker challenger 4812 |
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#3 |
Registered User
Join Date: Mar 2007
Location: Oakland, Ca
Posts: 1,382
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Re: Fuel tank strap, U Bolt dimensions ?
Here's what I made. In the end I went with a stronger design. If one of these welds breaks the tank could fall out. instead I took 1/8" thick steel, 1" by ~8" and drilled 3/8" holes the correct distance apart and welded the bolt heads to the plate. this way if the welds break the bolt will still hold the straps in. Make sense?
This is from total distance across including threads |
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#4 |
Registered User
Join Date: Jul 2010
Location: Knoxville,TN
Posts: 1,185
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Re: Fuel tank strap, U Bolt dimensions ?
I already have my tank installed so this isnt 100% but should get you started
7 3/8" center to center 2 1/2" Threaded section 3 1/2" top of bar to bottom of threads. Scott
__________________
1972 Custom Deluxe 20 4x4 burb 1971 GMC SWB CST 4x4 1972 GMC k20 4x4 (X- brush truck ) 1971 Chevy CST Blazer 4x4 1971 Chevy C/10 1970 Cab Chassis C30 157" 1971 Cab Chassis Custom 30 Deluxe 157" 292/4spd ( Napco Replica ) 1988 Chevy V30 4x4 wrecker challenger 4812 |
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#5 |
Registered User
Join Date: Oct 2009
Location: Great White North
Posts: 1,520
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Re: Fuel tank strap, U Bolt dimensions ?
Thanks for the help. This is enough that I can get something fabbed up. Is the thread 3/8 " size?
__________________
Jeff. '72 Blazer K5 "Camshaft opinions are like belly buttons; everyone has one and no two are alike" My Blazer Build: http://67-72chevytrucks.com/vboard/s...d.php?t=626752 My Engine Build: http://67-72chevytrucks.com/vboard/s...d.php?t=637336 |
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#6 |
Registered User
Join Date: Mar 2007
Location: Oakland, Ca
Posts: 1,382
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Re: Fuel tank strap, U Bolt dimensions ?
3/8" thread, yes. Post pics when it's done!
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#7 |
Senior Member
![]() Join Date: May 2011
Location: Greencastle PA
Posts: 6,717
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Re: Fuel tank strap, U Bolt dimensions ?
Here are some more pictures
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#8 |
Senior Member
![]() Join Date: May 2011
Location: Greencastle PA
Posts: 6,717
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Re: Fuel tank strap, U Bolt dimensions ?
I have two different u-bolts and both one leg is just slightly longer than the other
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#9 |
Registered User
Join Date: Oct 2009
Location: Great White North
Posts: 1,520
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Re: Fuel tank strap, U Bolt dimensions ?
Interesting. Do you remember when installed which way it goes? Longer front or back?
__________________
Jeff. '72 Blazer K5 "Camshaft opinions are like belly buttons; everyone has one and no two are alike" My Blazer Build: http://67-72chevytrucks.com/vboard/s...d.php?t=626752 My Engine Build: http://67-72chevytrucks.com/vboard/s...d.php?t=637336 |
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#10 |
Senior Member
![]() Join Date: May 2011
Location: Greencastle PA
Posts: 6,717
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Re: Fuel tank strap, U Bolt dimensions ?
No I don't but I really don't think it matters. It was probably just the process they used to bend the rod and not worried too much about the offset but that is just my thought.
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#11 |
Registered User
Join Date: Oct 2009
Location: Great White North
Posts: 1,520
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Re: Fuel tank strap, U Bolt dimensions ?
Ok thanks. I just picked up some 3/8 steel rod today. Hopefully this week I'll have some time to bend it and cut the threads. I'll post a pic when it is all done but I just plan on making it look stock.
__________________
Jeff. '72 Blazer K5 "Camshaft opinions are like belly buttons; everyone has one and no two are alike" My Blazer Build: http://67-72chevytrucks.com/vboard/s...d.php?t=626752 My Engine Build: http://67-72chevytrucks.com/vboard/s...d.php?t=637336 |
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#12 |
Senior Member
![]() Join Date: May 2011
Location: Greencastle PA
Posts: 6,717
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Re: Fuel tank strap, U Bolt dimensions ?
Ok just let me know if you need better dimensions or photos
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#13 |
Registered User
Join Date: Oct 2009
Location: Great White North
Posts: 1,520
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Re: Fuel tank strap, U Bolt dimensions ?
Thanks but I think you covered it. The spread looks like 7.5" ctr to ctr. I measured the tank and 7.5 is also the ctr to ctr on the strap depressions.
__________________
Jeff. '72 Blazer K5 "Camshaft opinions are like belly buttons; everyone has one and no two are alike" My Blazer Build: http://67-72chevytrucks.com/vboard/s...d.php?t=626752 My Engine Build: http://67-72chevytrucks.com/vboard/s...d.php?t=637336 |
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#14 |
Registered User
Join Date: Oct 2009
Location: Great White North
Posts: 1,520
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Re: Fuel tank strap, U Bolt dimensions ?
Finally got around to doing this. I got a piece of 3/8" cold rolled rod. Bent it as required and then cut the threads. As close to factory as I could get it. Just gave it a quick media blast to remove the steel oil so I can paint or powder it. Thanks again for everyone's help on this.
[IMG] ![]()
__________________
Jeff. '72 Blazer K5 "Camshaft opinions are like belly buttons; everyone has one and no two are alike" My Blazer Build: http://67-72chevytrucks.com/vboard/s...d.php?t=626752 My Engine Build: http://67-72chevytrucks.com/vboard/s...d.php?t=637336 |
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#15 |
Registered User
Join Date: Nov 2012
Location: Freeland, Michigan
Posts: 1,385
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Re: Fuel tank strap, U Bolt dimensions ?
Wow! That looks really good! What did you use to bend the rod to get such a nice radius?
Eric |
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#16 |
Registered User
Join Date: Feb 2012
Location: Durant, ok
Posts: 218
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Re: Fuel tank strap, U Bolt dimensions ?
I know its a long shot, but does anyone on the board reproduce these?
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1967 SWB C-10 1972 Blazer 4x4 2011 Silverado |
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#17 |
Senior Member
![]() Join Date: May 2011
Location: Greencastle PA
Posts: 6,717
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Re: Fuel tank strap, U Bolt dimensions ?
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