What size lug nuts do our trucks have? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

5150 · 05-09-2005, 09:01 PM

Hey guys,

I need to buy 20 new lug nuts for my new wheels, but I don't know the size. I know I need the acorn style just don't know if they are 1/2 -20's or what.

thanks,

Bryan

Purs · 05-09-2005, 09:27 PM

I hope they are, I just shelled out for some McGards triple chrome plated 1/2" 20's....

BraveDave · 05-09-2005, 09:36 PM

Good God, I thought I had heard it all. I check out this site all the time and I am amazed at the amount of technical questions there are. Our trucks are old and pretty basic compared to today's cars, yet there are thousands of things to talk about. I don't mean to make fun of you, bud. I just thought this was pretty funny!!

Longhorn Man · 05-09-2005, 10:21 PM

all depends on what year/tonnage your truck is.
I think the drum brake trucks (1/2 ton) are 7/16 with an increase to 1/2 inch in 71.

5150 · 05-10-2005, 07:46 AM

Mine is a 70 stepside, but has been switched over to disc front brakes. I guess I'll just buy 20 1/2-20's and see if they fit.

Vince M · 05-10-2005, 08:39 AM

1/2"-20 on the disc brake front end. Hope you chamged over the rear also. Like Longhorn said the earlier years were 7/16".

5150 · 05-10-2005, 07:31 PM

Well, I guess we are going to find out when I get there to swap the wheels and tires. I didn't do the swap so I have no clue.

68w/sbc406 · 05-10-2005, 10:20 PM

Quote:

Originally Posted by yellow69

I didn't do the swap so I have no clue.

are the rear axels 5 lug??? if they are they are 1/2" but if they are 6 lug then they are 7/16"

05-09-2005, 09:01 PM	#1
5150 C10 Club Tennessee Join Date: Mar 2003 Location: White House, TN 37188 Posts: 8,281	What size lug nuts do our trucks have? Hey guys, I need to buy 20 new lug nuts for my new wheels, but I don't know the size. I know I need the acorn style just don't know if they are 1/2 -20's or what. thanks, Bryan __________________ Bryan www.gmtruckshow.com Project "Andes"-Halen's First Truck Project: Patina Burb for he is God’s servant for your good. But if you do wrong, be afraid, for he does not bear the sword in vain. For he is the servant of God, an avenger who carries out God’s wrath on the wrongdoer. Romans 13:4

05-09-2005, 09:27 PM	#2
Purs Got Big Block? Join Date: Apr 2000 Location: West Texas Posts: 1,510	I hope they are, I just shelled out for some McGards triple chrome plated 1/2" 20's.... __________________ "Experience is what you get when you didn't get what you wanted."

05-09-2005, 09:36 PM	#3
BraveDave Registered User Join Date: Dec 2002 Location: Magnolia, Texas Posts: 336	Good God, I thought I had heard it all. I check out this site all the time and I am amazed at the amount of technical questions there are. Our trucks are old and pretty basic compared to today's cars, yet there are thousands of things to talk about. I don't mean to make fun of you, bud. I just thought this was pretty funny!! __________________ '72 Chevy Cheyenne Super, '56 Chevy Bel Air,'56 Chevy Nomad, '61 Chevy Impala, '64 Cadillac Fleetwood, 1966 Thunderbird Convertible

05-10-2005, 07:46 AM	#5
5150 C10 Club Tennessee Join Date: Mar 2003 Location: White House, TN 37188 Posts: 8,281	Mine is a 70 stepside, but has been switched over to disc front brakes. I guess I'll just buy 20 1/2-20's and see if they fit. __________________ Bryan www.gmtruckshow.com Project "Andes"-Halen's First Truck Project: Patina Burb for he is God’s servant for your good. But if you do wrong, be afraid, for he does not bear the sword in vain. For he is the servant of God, an avenger who carries out God’s wrath on the wrongdoer. Romans 13:4

05-10-2005, 08:39 AM	#6
Vince M Senior Member Join Date: Apr 2000 Location: Orlando, FL Posts: 1,076	1/2"-20 on the disc brake front end. Hope you chamged over the rear also. Like Longhorn said the earlier years were 7/16". __________________ ............................................................ 68 Chevy CST SWB w/LS1, carb & 700r4. Golden Anniversary clone with a few improvements.

05-09-2005, 10:21 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	all depends on what year/tonnage your truck is. I think the drum brake trucks (1/2 ton) are 7/16 with an increase to 1/2 inch in 71.

05-10-2005, 07:31 PM	#7
5150 C10 Club Tennessee Join Date: Mar 2003 Location: White House, TN 37188 Posts: 8,281	Well, I guess we are going to find out when I get there to swap the wheels and tires. I didn't do the swap so I have no clue. __________________ Bryan www.gmtruckshow.com Project "Andes"-Halen's First Truck Project: Patina Burb for he is God’s servant for your good. But if you do wrong, be afraid, for he does not bear the sword in vain. For he is the servant of God, an avenger who carries out God’s wrath on the wrongdoer. Romans 13:4



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