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Old 01-21-2011, 07:10 PM
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master cylinder placement on late 30s rods? where is yours?

ok guys i have a 1938 dodge with a 400sbc and i am taking some time to redo some things on the build that were done or not done before i got the car.

currently the brakes consist of 4 wheel discs and a corvette master cylinder through the firewall with no booster. its ok but since im fixing stuff... you guys that have late 30s rods are you running frame mount set ups or are you running through the firewall or running 90 degree underdash pedals.

chime in im looking for any opinions, experiences, preferences whatever you got.

thanks! long time reader first time poster!
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Old 01-21-2011, 07:38 PM
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i dont have one yet but planning on under floor
because of a bbc and 4" setback firewall, i wont have room
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Old 01-21-2011, 09:01 PM
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Quote:
Originally Posted by matts37chev
i dont have one yet but planning on under floor
because of a bbc and 4" setback firewall, i wont have room
so you have to do the 4" setback on the firewall to get the bbc in there? is that because of the width of the BB?
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Old 01-21-2011, 09:09 PM
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Quote:
Originally Posted by gufnstuf
so you have to do the 4" setback on the firewall to get the bbc in there? is that because of the width of the BB?
mostly because i wanted the drivetrain as far back as i could easily get it
for both weight and to make room for fans at the front
and yes, also for extra width in the frame for exhaust and steering
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Old 01-24-2011, 07:18 AM
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I have made my own pedal assembly to avoid the frame mount master:





It is attached to the square tube and the the bottom of the steering column. No ugly bolts sticking out on the front of the fire wall.
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Old 01-24-2011, 07:23 AM
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that looks like it will work out great for you, nice job
how long did it take you and how many trys before you got it correct?
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Old 01-24-2011, 07:41 AM
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Quote:
Originally Posted by matts37chev
that looks like it will work out great for you, nice job
how long did it take you and how many trys before you got it correct?
Dont ask....
I have made the pedal ratios easy changeable.
It was actually lots of things to take in to consideration.

Last edited by staleg; 01-24-2011 at 07:47 AM.
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Old 01-24-2011, 07:54 AM
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master cyl

as for any custom build, i try to think of what if its needs repair after the car is finished.. assability (sp?)... needless to say when buiding a T-bucket u don't have any firewall room so under the floor it goes.. i moved mine back to under the seat. used about a 12" rod from peddle to m/s. cut a hole in floor to get to the top of m/s if i need to... didn't have any bleeding problems and works just fine.. bill
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Old 01-24-2011, 11:45 PM
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Quote:
Originally Posted by delawarebill
as for any custom build, i try to think of what if its needs repair after the car is finished.. assability (sp?)... needless to say when buiding a T-bucket u don't have any firewall room so under the floor it goes.. i moved mine back to under the seat. used about a 12" rod from peddle to m/s. cut a hole in floor to get to the top of m/s if i need to... didn't have any bleeding problems and works just fine.. bill
I agree very much on that one! As I build, I always thinks about this.

As for the master cylinder it will have an external reservoar on the firewall for easy brake fluid inspection.
And for other kind of pedal changes/repairs, I don't have easy access to a car lift , so for me it's less trouble to crawl under the dashboard than to crawl under the car.
To remove the steering column will be easy the way I have attached it, and if I do that, the access to the pedal assembly will be very easy.
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Old 01-26-2011, 02:34 PM
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my master is underneath my floor.
i have some 36 chevy pedals.
with a rod that comes back to a fulcrum point on my x member of my frame.
the other side pushes a rod into the master cylinder..
i dont have a finished picture of it, but this is the location.

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