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BOOSTER BASICS

ORIGINAL BOOSTER

PLATING

What did brake boosters actually look like when they were brand new? Some “experts” claim they were never shiny or that they were not zinc dichromate. But these photos of boosters with their original plating still intact speak for themselves. As you can see, they were zinc dichromate and are a good representation of nice plating on Delco Moraine boosters. In fact, we’ve posted a letter from the Delco Chassis Division on various GM discussion boards stating that the plating used in 1969 was definitely zinc dichromate!

Granted, they didn’t always look this nice. At Brake Boosters we’ve disassembled 14,000+ boosters over the last few decades, and we can assure you GM wasn’t always concerned about having just the right plating hues!

1970 Chevelle

1970 Chevelle

1965-66 Corvette Power Booster Brakes
1967-442

1967 442

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1969 Camaro

1965-1966 Vette

COMMON BOOSTER TYPES (RESTORED CONDITION)

1964 to 1966 Cars

Used on Many 1964 - 1966 GM Cars 

1969 to 1979 Cars and Pickups

Used on Many 1967 - 1979 GM Cars & Pickups

1971 Full and 1975 Midsize

Used on Many 1971/Up Full Size & 1977/Up Mid Size GM Cars

TO RESTORE OR USE

A REPRODUCTION?

Since the introduction of Chinese-built reproduction brake boosters, there's been debate about whether to restore your original booster or buy one of the millions of reproductions available to GM Muscle Car owners

 

Some complain reproduction boosters are easy to spot on your beautifully-restored GM car. One telltale sign is the triangular-shaped impressions. The originals have much sharper lines than the reproductions. (See photo at right.) In addition, the Delco Moraine stamps don't match the originals. 

 

Another complaint is that reproductions tend to have a high failure rate. Some owners have gone through several repro boosters trying to find one that works, and since vendors don't usually offer warranties on them, they're out the expense each time. In contrast, restored boosters almost never come back to Brake Boosters because they work!

Admittedly, there is a price difference between a reproduction and the cost of restoring an original, but we believe it's important to have the right part for the job. It's your brake system, after all! Ultimately, we recommend you do some homework before making a decision. 

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REPRODUCTION

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ORIGINAL

MORE RESOURCES

Learn more about classic auto restoration from some of our partners. 
MotorTrend by the Discovery Channel
Muscle Car Clinic
GTO Heaven
Bethel's Goat Farm GTO
Detail Plating (Our Sister Business)
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Brake Boosters

220 Machado Lane

San Luis Obispo, CA 93401

(805) 441-5390

brakerestoration@gmail.com

© 2020 - 2021 Brake Boosters by McCall Marketing