Using van hydroboost - will van master cylinder work? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Bocephus69 · 10-15-2021, 05:10 PM

Is anyone using the master cylinder off their hydroboost donor vehicle? This came off a 2009 express 3500 van. If so... The van did not have a proportioning valve. Do still need to run one on the C10? Photo of van's master cylinder is attached

Keith Seymore · 10-15-2021, 05:40 PM

I would say yes.

The van is a full bodied vehicle and is going to gave a lot more weight over the rear wheels than a pickup does.

I would suggest an adjustable prop valve, so that you can tune what it really wants, rather than trying to match an off the shelf replacement.

K

57taskforce · 10-16-2021, 11:32 AM

Quote:

Originally Posted by Bocephus69

Is anyone using the master cylinder off their hydroboost donor vehicle? This came off a 2009 express 3500 van. If so... The van did not have a proportioning valve. Do still need to run one on the C10? Photo of van's master cylinder is attached

I’m using one off a 2009 silverado 2500HD in my 72 K20. I ditched the plastic master cylinder and used a new Napa master cylinder for a 72 K20 (my truck) on the Silverado HD Hydroboost unit which allowed me to use the OE proportion valve from my K20.

Hope that helps.

Bocephus69 · 02-09-2022, 12:47 PM

Quote:

Originally Posted by 57taskforce

I’m using one off a 2009 silverado 2500HD in my 72 K20. I ditched the plastic master cylinder and used a new Napa master cylinder for a 72 K20 (my truck) on the Silverado HD Hydroboost unit which allowed me to use the OE proportion valve from my K20.

Hope that helps.

does the standard C10 master cylinder bolt right up to your 09 hydrobooster?

Bigdav160 · 02-09-2022, 04:59 PM

Mine did.

Discs front and rear? Or drums? The master cylinder will have a residual check valve for drums.

Bocephus69 · 02-09-2022, 05:34 PM

Quote:

Originally Posted by Bigdav160

Mine did.

Discs front and rear? Or drums? The master cylinder will have a residual check valve for drums.

Disk/disk.

I ask because from my research the newer (07ish and up) GM hydroboosters havr a different bore where the master cyl attaches

10-15-2021, 05:10 PM	#1
Bocephus69 Registered User Join Date: Jul 2015 Location: ND Posts: 58	Using van hydroboost - will van master cylinder work? Is anyone using the master cylinder off their hydroboost donor vehicle? This came off a 2009 express 3500 van. If so... The van did not have a proportioning valve. Do still need to run one on the C10? Photo of van's master cylinder is attached Attached Images __________________ 69 C10 fleetside long bed - 6.0/4l80E in progress

10-15-2021, 05:40 PM	#2
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,226	Re: Using van hydroboost - will van master cylinder work? I would say yes. The van is a full bodied vehicle and is going to gave a lot more weight over the rear wheels than a pickup does. I would suggest an adjustable prop valve, so that you can tune what it really wants, rather than trying to match an off the shelf replacement. K __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/

02-09-2022, 04:59 PM	#5
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: Using van hydroboost - will van master cylinder work? Mine did. Discs front and rear? Or drums? The master cylinder will have a residual check valve for drums. __________________ My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe



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