Booster with 72-73 Truck Master Cylinder?

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Conrad
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Booster with 72-73 Truck Master Cylinder?

Post by Conrad »

Hi all,

I've been reading all the Scarebird posts, and am following the Scarebird parts list and have found a 72-73 truck master cylinder to buy. I'd like to also use a 7" Booster with it (future towing) but all the boosters that match the 4 post MCs are 'big' 8" Bendix compatible boosters. Which would be fine, but I have a 440 that I think will be too wide for the booster.

One thought was to start out with the 72-73 MC and see how that works without a booster. But I'd rather not burn the $$$ to buy the MC if it won't be compatible with any currently available boosters.

The other option? is to get a 7" A-body dual reservoir setup but not sure how fabrication work will be required to adapt the pedal to the booster.

I already am needing to think about finding an automatic pedal assembly to put in place of the original clutch assembly that was original to the truck.

Appreciate the thoughts.

Conrad

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Re: Booster with 72-73 Truck Master Cylinder?

Post by PwrWgnDrvr »

The auto pedal assy is the same as the manual except there is a spacer on the shaft where the clutch pedal would be. You can make that spacer by cutting the pedal arm off.

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Conrad
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Re: Booster with 72-73 Truck Master Cylinder?

Post by Conrad »

I've put the (NORS) 72 truck master cylinder I bought back up on eBay. It is a 1" Booster and I am going to go with a 15/16" Booster. I never knew why my '74 Scamp brakes were so sensitive and now I know - it had front disc brakes with the 15/16" MC + Booster. I felt like I could stop on a dime.

The 4 post MC will work with my manual brakes until I figure out the booster solution. I just now need to modify my MC pushrod or possibly get an adjust one with a pushrod (locking) seal.

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