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  #41  
Old 12-27-2021, 06:50 PM
jerry455 jerry455 is offline
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You can get a standard wheel stud to fit into a 1LE rotor. The studs I bought and installed were identical in overall size as the original metric stud. I popped out the old studs and installed the new 7/16" studs. I have had the brake set up on my '76 Firebird for 2 years now.

  #42  
Old 12-27-2021, 07:49 PM
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Quote:
Originally Posted by HWYSTR455 View Post
...As far as I know, there are no pre-80s Pontiac cars that used hub centric wheels, but I could be wrong. A think no GM pre-80s car used hub centric wheels, but don't hold me to that...
Pretty much every car postwar we have seen with the exception of Dodge trucks are hub/pilot centered with OEM wheels. Full size Pontiac are usually 3.06" Ø while intermediates are 2.781" Ø.

It always made me shake my head seeing repop rims, ie Snowflakes, with oversize pilot holes. WTF are they thinking these rims are going on?

  #43  
Old 12-27-2021, 11:09 PM
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Quote:
Originally Posted by jerry455 View Post
You can get a standard wheel stud to fit into a 1LE rotor. The studs I bought and installed were identical in overall size as the original metric stud. I popped out the old studs and installed the new 7/16" studs. I have had the brake set up on my '76 Firebird for 2 years now.
I use the 1LE front and rear rotors both 12". I didn't want standard studs in the rear and metric in the front. The only studs that would fit the later model rotors and be 7/16 were off a 1967 only F body fronts with drum brakes. Talk about a hard to find stud...they're one year only.

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  #44  
Old 12-28-2021, 10:51 AM
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you mean THESE studs...

10 - Optional standard wheel studs (NAPA PN-6411560 or Dorman PN 610-114)

simple knock ins.

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Old 12-28-2021, 11:40 AM
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Originally Posted by Scarebird View Post
[COLOR="Navy"]Yes, our drum-in-hat setup will do this. It will move the wheel out 1/4" due to rotor thickness. You will need 15"+ wheels to clear.

You also will need longer studs as GM was very cheap here.


Scarebird - duplicate to e-mail I sent you

Is the 1/4" overall track-width or per side for total of 1/2"? Also, what length studs would one use that would still work with Rally II's and blind lug nuts. Do the studs fit holes in the GMC Jimmy rotors?

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  #46  
Old 12-28-2021, 12:48 PM
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s the 1/4" overall track-width or per side for total of 1/2"?

Total of 1/4"

Also, what length studs would one use that would still work with Rally II's and blind lug nuts.

1/4" longer works well here

Do the studs fit holes in the GMC Jimmy rotors?

yes, same pilot and stud size.

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  #47  
Old 12-28-2021, 05:57 PM
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Quote:
Originally Posted by 67Fbird View Post
you mean THESE studs...

10 - Optional standard wheel studs (NAPA PN-6411560 or Dorman PN 610-114)

simple knock ins.
Yes, not for nothing but the part number was easy...I had to order them twice to get all the same studs in the box. Lol Nobody where I'm from nobody had them in stock. I couldn't even find one where I could see if they would work before ordering.

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  #48  
Old 12-29-2021, 07:53 PM
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FWIW I just measured some Moser 30 spline 8.5 10 bolt F body and the pilot is 2.760. Factory ones I have laying around are 2.770 another one 2.783.

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  #49  
Old 12-30-2021, 08:34 AM
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Quote:
Originally Posted by Scarebird View Post
Pretty much every car postwar we have seen with the exception of Dodge trucks are hub/pilot centered with OEM wheels. Full size Pontiac are usually 3.06" Ø while intermediates are 2.781" Ø.

It always made me shake my head seeing repop rims, ie Snowflakes, with oversize pilot holes. WTF are they thinking these rims are going on?
That's because aftermarket wheels are lug centric. The hub can vary, and they want them to fit multiple cars.

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