diameter of rear U-bolts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sactoC10 · 10-10-2003, 12:01 PM

Anyone know what the rear u-bolt diameter is for a 71 2WD? Probably no different than the diameter on any other trailing arm chevy truck. Gonna have a new pair of U-bolts made and this is the number one question I keep getting asked.

Custom 68 · 10-10-2003, 12:36 PM

I just drilled some holes in a plate for my u-bolts and used a 3/4 inch bit. The size was close so depending on the stock they have it is slightly less than 3/4 inch. Hope this helps

sactoC10 · 10-10-2003, 12:55 PM

Yeah, when I am talking to these places (the parts stores more than the BIG RIG fabricators) I keep getting asked, "Are they 5/8 or 9/16 inches?" And they are definitely thicker than "normal" so that "close to 3/4" size sounds right.

I can't get a quote over the phone unless I know the right size and I'd rather not run all over town for quotes with my U-bolt in hand. There are several places in town that will make them "while U wait" but the local Napa store is much closer, so I am trying to find out so I can buy a pair from them.

Thanks!

Fred T · 10-10-2003, 02:28 PM

The napa store won't have them. They have to be manufactured. I bought mine this summer, went into a local truck spring shop, laid the bolt on the counter.

The old guy said: 1/2 ton Chevy pickup.

Yes

67-72.

Yes.

Let me go get them.

They were already made, in stock, cost about $15 each. 3/4", I can't recall the width and length. Measure them and find out.

jef5150 · 10-10-2003, 03:02 PM

go to a 4x4 shop that installs lift kits, http://www.suspensionconnection.com/...tion/to=x.html

10-10-2003, 12:01 PM	#1
sactoC10 71 DELUX Join Date: Sep 2003 Location: Northern CA / Sac Posts: 1,055	diameter of rear U-bolts Anyone know what the rear u-bolt diameter is for a 71 2WD? Probably no different than the diameter on any other trailing arm chevy truck. Gonna have a new pair of U-bolts made and this is the number one question I keep getting asked.

10-10-2003, 12:36 PM	#2
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,945	I just drilled some holes in a plate for my u-bolts and used a 3/4 inch bit. The size was close so depending on the stock they have it is slightly less than 3/4 inch. Hope this helps __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

10-10-2003, 02:28 PM	#4
Fred T Cantankerous Geezer Join Date: Aug 2002 Location: Bel Aire, KS Posts: 6,264	The napa store won't have them. They have to be manufactured. I bought mine this summer, went into a local truck spring shop, laid the bolt on the counter. The old guy said: 1/2 ton Chevy pickup. Yes 67-72. Yes. Let me go get them. They were already made, in stock, cost about $15 each. 3/4", I can't recall the width and length. Measure them and find out. __________________ Fred There is no such thing as too much cam...just not enough engine.

10-10-2003, 12:55 PM	#3
sactoC10 71 DELUX Join Date: Sep 2003 Location: Northern CA / Sac Posts: 1,055	Yeah, when I am talking to these places (the parts stores more than the BIG RIG fabricators) I keep getting asked, "Are they 5/8 or 9/16 inches?" And they are definitely thicker than "normal" so that "close to 3/4" size sounds right. I can't get a quote over the phone unless I know the right size and I'd rather not run all over town for quotes with my U-bolt in hand. There are several places in town that will make them "while U wait" but the local Napa store is much closer, so I am trying to find out so I can buy a pair from them. Thanks!

10-10-2003, 03:02 PM	#5
jef5150 Inline 69 Join Date: Apr 2003 Location: valleysprings,california Posts: 1,018	go to a 4x4 shop that installs lift kits, http://www.suspensionconnection.com/...tion/to=x.html



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