1972 C3 with LS 3 conversion C 4 suspension and C4 Disc brakes .. Decided to scrap power vac booster as I have an LS3 engine and it is not going to work out.(LS3 with cam doe's not supply enough vac). decided to go with hydro boost system,. Has anyone done this .? I know I need a Wilwood 1 1/8 bore MC . Summit has boosters for 140.00 I would just need the adaptor plate to fit in the holes in the firewall where old booster was. and a pushrod. Also, need some instruction as to plumb it Thanks in advance Any help would be greatly appreciated

 

Would it be simpler to add a electric vacuum pump to the existing system?

 

I’m with 73shark, why not go with a vacuum pump. I had my 79 bored, stroked, and upgraded the cam, and may not have enough vacuum for brakes. If not, I’m going to be installing a vacuum pump.

 

Boss wants me to install Hydrobooster . I found some old posts and I am using a Hydrobooster from a 94 Chevy truck . and a 1 1/8 Wilwood MC . I have a LS3 engine so clearance is a prob. Also I changed all the Vac systems to Electric ,Lights wiper door. and removed the big vac tank. and all the hoses.