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Fixing the old truck

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Joined: Jan 1970
Posts: 365
R
Shop Shark
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Joined: Jan 1970
Posts: 365
Does anyone know what this ratio is? 6:1, ?:1...

I have a disc-disc master cylinder from a Lincoln Mark V which I believe has a bore of 1 1/8".

I suspect that the ratio of the stock Chevy brake pedal will work OK with this master cylinder with no power assist (vaccuum or hydraulic) but I'd like to hear of anyone else's experiences.


Remember 9-11-01--God Bless the USA
JUSTICE, not REVENGE, will prevail

1951 Chevy 1/2-ton Pickup truck
Joined: Dec 2004
Posts: 452
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Pedal ratio is about 6.33:1


Curt
----
1953 Chevy 6400, 1957 Chevy 2dr Sedan
--"Mediocrity is easy, the good things take time"
Joined: Jan 1970
Posts: 365
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Thanks, I appreciate your information.


Remember 9-11-01--God Bless the USA
JUSTICE, not REVENGE, will prevail

1951 Chevy 1/2-ton Pickup truck
Joined: Jan 2000
Posts: 1,586
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Extreme Gabster
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Racecarl,use a master cylinder with the same bore as the original if using the stock drum brakes.A larger master bore will give you a firm pedal requiring more foot pressure,smaller bore ,generally a mushy pedal ,less foot pressure.1-1/8 is the stock master bore size on 51 and up I believe.The earlier Huck brakes used a one inch bore.


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