Are OE lug studs long enough? 77 C10

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

ChuckN

Full Access Member
Joined
Nov 8, 2022
Posts
1,074
Reaction score
3,058
Location
Bellinham, WA
First Name
Chad
Truck Year
1981
Truck Model
C10
Engine Size
350
Thanks!
Yours would look pimp with the gray or chrome ones.
I’d go US mag scottsdales all day long. Love them but I’m a cheap ass and those are what? $1000 a pop?
Yah, they ain’t cheap for sure! That’s the cool thing about the Halibrands, they look the part AND are reasonable!
 

Grit dog

Full Access Member
Joined
May 18, 2020
Posts
6,312
Reaction score
10,760
Location
Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
Yah, they ain’t cheap for sure! That’s the cool thing about the Halibrands, they look the part AND are reasonable!
For sure. Fun fact these are the first set of new aftermarket wheels I’ve bought for MY vehicle ever.
Until a couple years ago when the kids got wheels for their car and truck for Xmas I’d never bought more than a set of takeoff something or others for a truck.
These will do the trick and I’ve never seen a set of them in the real world so will be unique.
 

Walstw01

Junior Member
Joined
Sep 28, 2023
Posts
12
Reaction score
29
Location
55314
First Name
Wade
Truck Year
1979
Truck Model
K25
Engine Size
355
Per Fastenal, in an ideal situation you want a minimum of 3 full threads extending past the nut.
 

WesN

Full Access Member
Joined
Feb 15, 2018
Posts
212
Reaction score
575
Location
Edmonton Alberta Canada
First Name
Wes
Truck Year
1981
Truck Model
C1500
Engine Size
350
I have searched just about everywhere to find c10 studs 1/2” longer than stock and zero, nada, nothing if anybody comes up with a part number or location to get some please reply in the post. Problem seams to be the knurl size.
 

Grit dog

Full Access Member
Joined
May 18, 2020
Posts
6,312
Reaction score
10,760
Location
Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
Per Fastenal, in an ideal situation you want a minimum of 3 full threads extending past the nut.
And AISC only requires the end of the bolt to stick through the nut a minimal distance. IE flush or better.
Now note, a conical tapered nut has more threads for full engagement than a standard hex nut. Sometimes far more as it’s much thicker than a standard hex nut.
 

Grit dog

Full Access Member
Joined
May 18, 2020
Posts
6,312
Reaction score
10,760
Location
Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
Regardless, the extended thread lugs showed up today. I’ll see how many turns they get. Hoping to not go through the goat rope of finding what may be unobtainium length studs.
 

Grit dog

Full Access Member
Joined
May 18, 2020
Posts
6,312
Reaction score
10,760
Location
Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
Well, success.
Got the new wheelios on tonight and even a shot coat of black paint on the drums.
The ET lug nuts were absolutely necessary.
They got 15-16 threads (turns) engaged. More than enough for a 1/2” bolt even if the first few are in the thin part of the extended lug nut.
And got to learn the younger son about how much thread is needed to be a proper connection. Life lessons…lol.
Since he’s the one who identified the issue on his own, it’ll be one he remembers hopefully.
Oh and chased a tweaker out of our subdivision…. Guess it’s time to leave the German Shepherd in the front yard!
You must be registered for see images attach
You must be registered for see images attach
 

Grit dog

Full Access Member
Joined
May 18, 2020
Posts
6,312
Reaction score
10,760
Location
Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
Kinda wish I’d just gone 275s all the way around now.
It’s got the slightly staggered look I thought I wanted, but I now sorta think a little more meat on the front tires woulda been nice. (And the bigger tires were $20 a pop less than the smaller ones…)
Wuz slightly concerned I mounted the side pipes a bit too far forward and the front tires might’ve been too close at full steering lock but they still have about a 3” gap with the wheels turned. Whew!
Good thing, because that’s where the pipes centered up the best without the mount locations hitting a body gap or a seam. Or getting overly creative with the mounting.
Feel I could also have gotten away with 1/2” less offset in front. But as it is, this combo got the track width reeeal close to being the same now. Mucho bettero.
And when the older boy got home from the gym, first thing he did was sight down the side of the truck and said, well that’s better, the @ss end ain’t narrower now!
They’re learning!
 

Grit dog

Full Access Member
Joined
May 18, 2020
Posts
6,312
Reaction score
10,760
Location
Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
Anyone needs a set of 5 lugger 15” steelies with matching hub caps and some almost brand new 235-75-15 Toyo ATs, hit me up.
Wheels and hubcaps are straight
 

RanchWelder

Full Access Member
Joined
Jan 14, 2023
Posts
698
Reaction score
1,020
Location
Earth
First Name
--------
Truck Year
87
Truck Model
Blazer
Engine Size
355ci
Aviation AP Mechanical standard is at least 1 full thread protruding from ANY and ALL fasteners, (with proper washers, as required).

Zero deviation.

Anything less is 100% failure, gross negligence on the mechanic.

Some GM lugs that use a plastic cap are intentionally over-sized so they do NOT allow for the top threads to protrude. By design.

If it looks wrong, it probably is.
 

Grit dog

Full Access Member
Joined
May 18, 2020
Posts
6,312
Reaction score
10,760
Location
Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
Aviation AP Mechanical standard is at least 1 full thread protruding from ANY and ALL fasteners, (with proper washers, as required).

Zero deviation.

Anything less is 100% failure, gross negligence on the mechanic.

Some GM lugs that use a plastic cap are intentionally over-sized so they do NOT allow for the top threads to protrude. By design.

If it looks wrong, it probably is.
Which is basically AISC spec, the authority for steel construction, with a visual reference and factor of safety brought on you by the dumb asses that list doors off of 737s.
Bottom line is, any conical acorn lug nut has more threads in it than it needs for full strength.
 

Grit dog

Full Access Member
Joined
May 18, 2020
Posts
6,312
Reaction score
10,760
Location
Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
Aviation AP Mechanical standard is at least 1 full thread protruding from ANY and ALL fasteners, (with proper washers, as required).

Zero deviation.

Anything less is 100% failure, gross negligence on the mechanic.

Some GM lugs that use a plastic cap are intentionally over-sized so they do NOT allow for the top threads to protrude. By design.

If it looks wrong, it probably is.
Those GM lugs you’re referencing dint even have threads all the way thru either. They do look weird like theres something wrong though.
 

sublimeobs

Junior Member
Joined
Nov 10, 2023
Posts
7
Reaction score
9
Location
NELA
First Name
Knucklehead
Truck Year
1984
Truck Model
C10
Engine Size
350
I have searched just about everywhere to find c10 studs 1/2” longer than stock and zero, nada, nothing if anybody comes up with a part number or location to get some please reply in the post. Problem seams to be the knurl size.

Summit has -->these that have the correct knurl for the front (.620) but you'd have to cut them down from 3".

I haven't run across anything for the rear knurl (.535). If you're willing to drill for a larger knurl, the options open up.
 

FireTruck1984

Full Access Member
Joined
Jan 7, 2019
Posts
2,904
Reaction score
9,456
Location
Michigan
First Name
Ted
Truck Year
1984 and 1984
Truck Model
High Sierra K1500 350. Sierra Classic C1500 305.
Engine Size
350, 305
Well, success.
Got the new wheelios on tonight and even a shot coat of black paint on the drums.
The ET lug nuts were absolutely necessary.
They got 15-16 threads (turns) engaged. More than enough for a 1/2” bolt even if the first few are in the thin part of the extended lug nut.
And got to learn the younger son about how much thread is needed to be a proper connection. Life lessons…lol.
Since he’s the one who identified the issue on his own, it’ll be one he remembers hopefully.
Oh and chased a tweaker out of our subdivision…. Guess it’s time to leave the German Shepherd in the front yard!
You must be registered for see images attach
You must be registered for see images attach
Great wheel choice! Nice Stance
 

Latest posts

Forum statistics

Threads
42,790
Posts
922,661
Members
34,362
Latest member
bdcon18
Top