9/16 front studs for the 10-bolt

[Blue85]

I couldn't find any exact information on this swap. I want longer wheels studs and might as well go bigger to match my rear 9/16" studs. So what size drill bits will I need for the hubs and rotors?

Stock:

Part Number:610-179.1 Type:Serrated StudThread:7/16-20 Knurl Diameter:.565 inch Length:1-3/4 inch Shoulder Length:7/8 inch

SRW 1-ton front:

Part Number:610-283.1 Application:Front With single rear wheels
Type:Serrated Stud Thread:9/16-18 Knurl Diameter:.650 inch Length:2-17/32 inch Shoulder Length:15/16 inch

 

[Blue85]

I was hoping that there was a rule of thumb - like go XX/1000 smaller than the knurl. Then I can buy drill bits before tear down.

But if there isn't such a rule, let's say I use the specs from the stock studs and then take calipers to the stock holes. Do I apply the same difference to the larger studs or the same percentage change?

 

[Big Blzn]

Why do you want to do this? Here's my take. I did my 3/4 ton swap this last summer. I had to go back and change my spare tire carrier from the 1/2 ton (7/16" I think) to the 9/16" studs. IIRC, I drilled the new holes in the carrier mounting plate with a 5/8" bit and it was about the right size or maybe a little small. I had to go back in and ream out the hole a bit with a metal ream thingy just a bit. I did put a small tack weld on the stud to keep it from spinning just in case.

 

[Chevy305]

9/16" sounds definately overkill. I converted to all 1/2" ARP wheel studs. I used these:

http://www.jegs.com/i/ARP/070/100-7706/10002/-1

Not 100% sure of the part number, but I will verify this weekend. It took a lot of pounding and some reaming of the wholes but these studs did fit on my front 10 bolt. Here's how they look:

 

[Blue85]

Thanks for the info. I looked at those aftermarket 1/2" studs and if I can get out of drilling I might end up going this route since it avoids drilling all future brake rotors. It just appeals to me to have the same studs and lug nuts on all 4 corners. I thought somebody else must have done this.

 

[dremu]

Thanks for the info. I looked at those aftermarket 1/2" studs and if I can get out of drilling I might end up going this route since it avoids drilling all future brake rotors. It just appeals to me to have the same studs and lug nuts on all 4 corners. I thought somebody else must have done this.

What rear axle do you have that has bigger lugs than the front? I coulda sworn by 8-bolt 10b has the same size lugs as the 14BFF in back...

-- A

 

[ktmoutfront]

I guess I went way over kill with the 5/8x3" studs.

 

[Blue85]

Everything is 6-lug. Rear is 14b s/f. I am using rear wheel studs from the 8-lug version (9/16-18). Front is stock 1/2-ton studs (7/16-20).

 

[Blue85]

I found this list fro Moroso. It shows the recommened hole size as .002" to .090" smaller than the knurl diameter. So if my stud has .65" knurl, I need a hole 0.56-0.648". That includes 9/16 and 5/8", then.

Big Blzn says that 5/8" (0.625) was actually kind of tight and 9/16 is supposed to be the thread diameter (?) so it looks like 5/8" is the winner.

The section for the rotor looks larger, so that could be 11/16?

PART # DESCRIPTION​

46150​

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Wheel Studs, 7/16" -20 x 2-7/8" Press-in, .480" dia.
knurl and quick start dog end, fits most late GM drum
brake applications. Standard hole size: .472" to .479"​

46160​

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Wheel Studs, 7/16" -20 x 2-7/8" Press-in, .560" dia.
knurl and quick start dog end, fits most late GM disc
brake and early drum brake applications. Standard
hole size: .552" to .559"​

46180​

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Wheel Studs, 1/2" -20 x 3" Press-in, .615" dia. knurl
and quick start dog end, fits most disc brake Fords
front and rear, 2004-2008 Mustang rears and Chrysler
front. Standard hole size: .606" to .613"​

46185​

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Wheel Studs, 1/2" -20 x 3" Press-in, .594" dia. knurl
and quick start dog end, fits 1979-03 Mustang,
2004-2008 Mustang fronts. Also has flat on head for
front hubs with ABS. Standard hole size: .590" (15mm)​

46190​

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Wheel Studs, 1/2" -20 x 3" Press-in, .685" dia. knurl
and quick start dog end, fits most Chrysler rear with
1/2" stud. Standard hole size: .676" to .683"​

46220​

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Wheel Studs, 1/2" -20 x 3" Press-in, .563" dia. knurl
and quick start dog end for use in 1/2" Frankland hubs.
Standard hole size: .554" to .561"​

46240​

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Wheel Studs, 5/8" -18 x 3" Press-in, .672" dia. knurl
and quick start dog end for oval track applications.​

Standard hole size: .663" to .670"

 

[bot0611]

I did it a week ago, everybody told me not to not wirth it but honestly screw it its my truck so i did it, went to NAPA got all 12 bolts got the discs off took the to a local shop to be rebored and slammed them in there, i would of liked them to be longer but still got the job done, got me new nuts from summit (9/16-18 Acorn nuts).

 

[Blue85]

So what stud did you go with? Do you know what size holes they made?

 

[bot0611]

9/16-18

from an 78 k20

No i dont know the size of the holes but the machine shop has the tools to find the diameter