Firewall Bracing For MC?

[Jesse Z]

I see many of you use firewall mounted master cylinders. And suggestions regarding how should I brace the firewall and mount the MC to prevent flexing during brake application?

[bowt1ed]

A few of us have used CPP's booster/master mount kit, which triangulates the firewall and dash. Very strong. Prior to that, I had a 2nd Gen Camaro booster/master and it was supported adequately. If I were staying with it still, would probably fab another support bracket to dash though.

Cheers, Jim

[Oldtruckwelder]

The cpp system is really nice and braced
JT from SC

[Jesse Z]

Originally Posted by Oldtruckwelder

The cpp system is really nice and braced
JT from SC

That looks like a problem solver that will get my truck on the road quicker. Thanks!

[Oldtruckwelder]

Originally Posted by Jesse Z

That looks like a problem solver that will get my truck on the road quicker. Thanks!

The CPP system is top notch and has some options at order.
Some of the cons are the existing brace/bracket needs to be cut out under dash. And really minor you will need to add your brake light switch of your choice.
JT from SC

[whitedog76]

I’ve pulled brake pedal assemblies from 03 and newer GM vans and pedal assemblies from Jeep TJ’s. The Jeep was spread out a little more probably not needing firewall reinforcing, but the bracket itself seems a little weak. The GM van pedal is about as beefy as it gets, bolt it up and go.

[mr48chev]

I used a piece of plate about a foot square on the inside of the firewall on mine when I had the firewall mounted mc. Had the pedal bracket tied into the dash too. Never had a flex problem. I had a mastercylinder/booster and pedal assembly out of some rig I scrapped out but can't remember what. I just remember the booster was big and ugly but worked great.