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Author Topic: Superbird brake booster  (Read 403 times)
boss429kiwi
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« on: February 22, 2018, 01:16:59 AM »

Hi (New Zealand)

My original brake booster has blown (Superbird, 6 pack, 4 speed).
Since I am an impatient $&#%, I purchased a reproduction 70 b body booster from Year One, to find the firewall mounting studs were different. I then ordered a 69 b body booster thinking this was my next best option.
I was wrong, this stud pattern was different again.

I'm going to send my booster over to be rebuilt (should have done this in the first place!  eek)

But I need to ask, What brake booster is correct for a Superbird? And why so different to normal?

Thanks
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NEW ZEALAND (aka Paradise)
1973 De Tomaso Pantera GTS widebody
1970 Superbird, 6pack, 4 speed, Tor-Red, Buckets, restored by Julius
1970 428 Cobra Jet, 4 speed, calypso Coral, white shaker
1970 Boss 429 KK2457, Concours, Calypso Coral (SOLD)
1957 Chevy truck, big rear window, ocean green, STOCK!.....nice!
6bblgt
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« Reply #1 on: February 22, 2018, 01:39:31 AM »

all '70 b-body (non-HEMI) cars with power disc brakes had a Bendix dual-diaphragm brake booster with 5/16" studs on the firewall side

all '70 b-body HEMI cars with power disc brakes had a Bendix dual-diaphragm brake booster with 3/8" studs on the firewall side
 
the bolt pattern on the firewall side was also different between the two


* d-c hemiboostervsbbody.jpg (111.36 KB, 566x891 - viewed 139 times.)
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boss429kiwi
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« Reply #2 on: February 22, 2018, 01:48:59 AM »

What's with the different stud pattern, between the original and correct reproduction 70 booster.
I've seemed to have collected a graveyard of reproduction boosters, and nothing fits.
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NEW ZEALAND (aka Paradise)
1973 De Tomaso Pantera GTS widebody
1970 Superbird, 6pack, 4 speed, Tor-Red, Buckets, restored by Julius
1970 428 Cobra Jet, 4 speed, calypso Coral, white shaker
1970 Boss 429 KK2457, Concours, Calypso Coral (SOLD)
1957 Chevy truck, big rear window, ocean green, STOCK!.....nice!
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