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Old 09-24-2022, 11:31 AM   #1
skidoo
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Wilwood master cylinder

Have 72 gm c10 2wd looking at replacing the master cylinder. Does anyone know the bore size?
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Old 09-24-2022, 12:01 PM   #2
sfont66
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Re: Wilwood master cylinder

I have been running a manual Wilwood master with 7/8” bore for 4 or 5 years now. I’m happy with it.
A bit more pedal effort than with a booster, but the previous engine didn’t make enough vacuum to operate the booster.
Some day maybe hydro boost and bigger brakes all around. But then I will need larger wheels and then tires …….and….
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72 C10, Was a 350,M20, Brodix heads,Comp cam, Edelbrock intake&carb, Hedman hedders LWB.
Project is now a 5.3(L33) w/PRC stage 2.5 CNC ported 243heads, BTR RedHot cam,Holley Terminator X, T56 magnum. SWB, Boyd tank. 4.5/4 Drop http://67-72chevytrucks.com/vboard/s...My72c10project
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Old 09-24-2022, 01:00 PM   #3
sfont66
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Re: Wilwood master cylinder

Forgot to add that my truck is also a 72 C10 stock front disk/ rear drum at this time.
Couple pics
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72 C10, Was a 350,M20, Brodix heads,Comp cam, Edelbrock intake&carb, Hedman hedders LWB.
Project is now a 5.3(L33) w/PRC stage 2.5 CNC ported 243heads, BTR RedHot cam,Holley Terminator X, T56 magnum. SWB, Boyd tank. 4.5/4 Drop http://67-72chevytrucks.com/vboard/s...My72c10project
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Old 09-24-2022, 03:28 PM   #4
68 P.O.S.
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Re: Wilwood master cylinder

If you already have power brakes it should be 1-1/8" I believe.
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72 C10 lwb fleetside -stock 350/350 combo
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Old 09-24-2022, 06:10 PM   #5
Jason Banks
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Re: Wilwood master cylinder

I installed a 1 1/8 with a booster on a truck that is ls swapped but has a pretty mild cam. I ended up switching to the 1 inch bore because it took more pedal pressure than I liked to stop.
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Old 09-24-2022, 11:03 PM   #6
skidoo
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Re: Wilwood master cylinder

ok. thanks
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