Dual master cylinder, DUAL DRUM manual brakes... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Chevystep · 02-02-2018, 11:58 PM

Swapping over this weekend, read the excellent FAQ write ups, especially by Chief Rocka in ‘09, but there must have been at least 5-6 “THIS is the way they are plumbed from the master cylinder”.....front port (closest to grill, farthest from firewall) to front brakes.....followed by the exact opposite description a few threads later. There were great pictures and diagrams of both....my brakes will be NON POWER brakes, just my foot, so maybe the one picture with the description but has a power booster is not right???

WHICH way is it.......??????

**Captainfab** · 02-03-2018, 12:28 AM

If you use a '67-'70 truck master cylinder, the front port is front brakes and the rear is for the rear brakes.

**jayoldschool** · 02-03-2018, 12:33 AM

Yep. I've posted the exact pic you've used on other threads. Front to front on these, even though others have done it wrong and tell you it's right. I have the exact setup you're doing. Drum/Drum/dual/manual. Stops great.

**Backpayne** · 02-03-2018, 10:55 AM

Front to deont is what I did, too. Love having power brakes.

Cris · 02-03-2018, 02:02 PM

Does anyone know off hand what the bore size is on the 67-70 manual master?

Thanks, Cris

02-02-2018, 11:58 PM	#1
Chevystep Registered User Join Date: Jan 2014 Location: Comfort, TX Posts: 142	Dual master cylinder, DUAL DRUM manual brakes... Swapping over this weekend, read the excellent FAQ write ups, especially by Chief Rocka in ‘09, but there must have been at least 5-6 “THIS is the way they are plumbed from the master cylinder”.....front port (closest to grill, farthest from firewall) to front brakes.....followed by the exact opposite description a few threads later. There were great pictures and diagrams of both....my brakes will be NON POWER brakes, just my foot, so maybe the one picture with the description but has a power booster is not right??? WHICH way is it.......?????? Attached Images

02-03-2018, 12:28 AM	#2
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,254	Re: Dual master cylinder, DUAL DRUM manual brakes... If you use a '67-'70 truck master cylinder, the front port is front brakes and the rear is for the rear brakes. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

02-03-2018, 12:33 AM	#3
jayoldschool Moderator Join Date: Dec 2012 Location: ON, Canada Posts: 2,187	Re: Dual master cylinder, DUAL DRUM manual brakes... Yep. I've posted the exact pic you've used on other threads. Front to front on these, even though others have done it wrong and tell you it's right. I have the exact setup you're doing. Drum/Drum/dual/manual. Stops great.

02-03-2018, 10:55 AM	#4
Backpayne Senior Member Join Date: Nov 2015 Location: Seligman, MO Posts: 661	Re: Dual master cylinder, DUAL DRUM manual brakes... Front to deont is what I did, too. Love having power brakes.

02-03-2018, 02:02 PM	#5
Cris Registered User Join Date: Aug 2016 Location: Los Altos Hills, California Posts: 170	Re: Dual master cylinder, DUAL DRUM manual brakes... Does anyone know off hand what the bore size is on the 67-70 manual master? Thanks, Cris



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