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09-14-2022, 02:56 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Quote:
Originally Posted by cycleguy55
According to this page the speed bleeders for GMC Sierra front calipers are M10-1.5 X 33mm:
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No, the "Sierras" are really big front brakes that were made by the Sierra company. I have them on my car but I still bleed the brakes the same way I have for 50 years. It is not the GMC Sierra. 
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09-14-2022, 04:12 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
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09-14-2022, 04:19 PM
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CC Member
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Join Date: Feb 2014
Location: White City,
SK
Cobra Make, Engine: West Coast, 460 CID
Posts: 2,916
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Not Ranked
Quote:
Originally Posted by patrickt
No, the "Sierras" are really big front brakes that were made by the Sierra company. I have them on my car but I still bleed the brakes the same way I have for 50 years. It is not the GMC Sierra. 
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Dayamn. And Ford U.K. made a Sierra. Details matter. E.R.A., of course, uses GM calipers - but apparently not the ones from pickup trucks?
I can't find any listings for Sierra, other than brake pads. Are they no longer in business?
__________________
Brian
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09-14-2022, 04:23 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Quote:
Originally Posted by cycleguy55
I can't find any listings for Sierra, other than brake pads. Are they no longer in business?
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They are no longer in business. I think they started out as JFZ, which got eaten up by Sierra, which then went out of business. But, the Wilwood Rebuild Kit #130-2655 fits them, just in case anybody cares. 
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09-14-2022, 04:25 PM
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CC Member
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Join Date: Feb 2014
Location: White City,
SK
Cobra Make, Engine: West Coast, 460 CID
Posts: 2,916
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Not Ranked
Quote:
Originally Posted by patrickt
They are no longer in business. I think they started out as JFZ, which got eaten up by Sierra, which then went out of business. But, the Wilwood Rebuild Kit #130-2655 fits them, just in case anybody cares. 
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Got it.
As far as the speed bleeders are concerned, I guess the OP will have to pull the bleeders, measure the thread size and pitch and go from there.
__________________
Brian
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09-15-2022, 05:09 PM
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CC Member
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Join Date: Jul 2009
Cobra Make, Engine:
Posts: 417
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Not Ranked
Quote:
Originally Posted by cycleguy55
Got it.
As far as the speed bleeders are concerned, I guess the OP will have to pull the bleeders, measure the thread size and pitch and go from there.
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Yes, it's not unusual for calipers to have the bleeder hole drilled larger and tapped accordingly for a larger bleeder screw. Part of the re-build process, where the original screw is seized in and likley broken off. This is what I've got with my GM calipers. One bleed screw is larger than the other one.
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09-14-2022, 04:29 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
I'm going to just shoot from the hip and bet that the speed bleeders that fit the Wilwood #120-11136 also fit the Sierras.
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09-14-2022, 04:32 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Speed Bleeder Brake Bleeder Screws (1/4"x28, Set/4), fits Wilwood Calipers
Code: SB1428
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09-14-2022, 04:34 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Or maybe... Wilwood Brakes 220-0627 Brake Bleeder Screw For Use With Wilwood Calipers; 1/8 Inch-27 Thread Size; Set Of 4.
which look to be the same...
WILWOOD 220-0627 Brake Bleed Kit Calipers w/ 1/8-27 Bushing & 1/4-28 Screws 4pk
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