Brake booster bolts

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Elliot W

Full Access Member
Joined
Apr 13, 2021
Posts
153
Reaction score
252
Location
CT
First Name
Elliot
Truck Year
1974
Truck Model
C10
Engine Size
5.3
Looking for advice on the upper bolts for the brake booster. The truck didn’t have a booster when I got it so I think that’s how it came stock. I can’t think of how to fasten the top of the brake booster to the truck. There’s just enough space to drop a thin nut behind the firewall bracket, no chance of getting a bolt back there and getting it to protrude out toward the booster. I thought a rivnut would work best but even that is too long. Do I need to drill a hole in the firewall? Is this not a problem for factory power brake trucks?
You must be registered for see images attach
You must be registered for see images attach
You must be registered for see images attach
 

squaredeal91

Full Access Member
Joined
Mar 10, 2023
Posts
1,804
Reaction score
3,166
Location
Cave junction Oregon
First Name
Greg bush
Truck Year
1991 SB
Truck Model
K30
Engine Size
5.9 Cummins 12 valve
I'm sure, others know better but it might be a fender bolt that will go in and make its own threads and tighten it up.
 

Strick

Full Access Member
Joined
Nov 25, 2020
Posts
1,149
Reaction score
2,765
Location
Dunn, NC
First Name
Harold
Truck Year
1979
Truck Model
C20 Crew
Engine Size
350
The studs should be anchored from the pedal assembly & protrude the firewall.

HS
 

CalSgt

Full Access Member
Joined
Oct 3, 2021
Posts
1,518
Reaction score
3,214
Location
CA
First Name
Casey
Truck Year
1980
Truck Model
Chevy K-10 Custom Deluxe
Engine Size
350
Actually, I think those bolts were pressed in like studs with skinny heads on them between the firewall and the brace. I looked for a picture but the only one I have is showing that I sealed up that gap.

It might be possible to drill them out and feed bolts through from inside the cowl.

You must be registered for see images attach


You must be registered for see images attach
 

Elliot W

Full Access Member
Joined
Apr 13, 2021
Posts
153
Reaction score
252
Location
CT
First Name
Elliot
Truck Year
1974
Truck Model
C10
Engine Size
5.3
Thanks guys. Just wanted to make sure I wasn’t missing something obvious before punching holes in the firewall. Put two holes in it today. Turned out pretty good I think.
You must be registered for see images attach
You must be registered for see images attach
 

Latest posts

Forum statistics

Threads
42,137
Posts
909,894
Members
33,634
Latest member
prenrag
Top