Hydroboost conversion

[shock88]

so i put a ‘99 C3500HD master on for my rear disc…and due to clearance issues with my valve covers (LS swap) i’m thinking of converting the truck to hydroboost….will i run into any master cylinder fitment/stroke issues when doing this?

 

[Wes Harden]

Shouldn't you will need to check rod depth in master, but should bolt up

 

[campfire]

Might find that answer in the hydroboost tech thread:

Illustrated Hydroboost swap

I know there are many threads about the vacuum to hydro booster swap, but I haven't found one that shows it concisely with pictures. So I'll start one as I do the swap, get suggestions and have a chance to ask questions. In this case, parts were pulled from a 1987 1-ton dually 2WD to swap onto...

ck5.com

There are a few different mounting patterns for GM truck master cylinders. They don't just all swap back and forth. Check your particular master for fitment with your particular booster.

 

[Chuy84k5]

I put in a hydroboost from a 2005 sierra in mine I had to drill out the mounting plate to accommodate the studs one the fire wall.

 

[shock88]

Might find that answer in the hydroboost tech thread:

Illustrated Hydroboost swap

I know there are many threads about the vacuum to hydro booster swap, but I haven't found one that shows it concisely with pictures. So I'll start one as I do the swap, get suggestions and have a chance to ask questions. In this case, parts were pulled from a 1987 1-ton dually 2WD to swap onto...

ck5.com

There are a few different mounting patterns for GM truck master cylinders. They don't just all swap back and forth. Check your particular master for fitment with your particular booster.

hey thanks for the insight guys! sorry for the delay, i never got an email saying people responded ‍ but i definitely appreciate it, pics helped a ton, as long as i have a good starting point i think i can do some math and figure out these master cylinder bore/stroke numbers out