Spacers on rear drum brakes

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Oct 13, 2000 | 08:59 AM

Z28DJP1987

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Joined: Sep 2000

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From: Ohio, USA

Spacers on rear drum brakes

What purpose did the approx.250 spacers serve on 87IROC'S rear rum brakes?? I only have one on the left side. Any info would help.

Oct 13, 2000 | 01:24 PM

RCR

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Joined: Jul 1999

Posts: 851

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From: Shelby Twp., Mi., USA

Car: '84 Fiero ('01 GA interior)

Engine: '96 4.0 Aurora

Transmission: '96 4T80E

From what I can gather, the drum assembly is about 0.125" shorter on each side than the disk assy. My '89 Formula had them. And they should be on both sides.
Bob

Oct 13, 2000 | 02:18 PM

GregWestphal

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From: Pasadena, MD

Car: '87 Camaro IROC-Z

Engine: 385 HSR

Transmission: 700R4

Axle/Gears: 3.42 posi

I think only the iron-drum'd brakes got the spacers. I have the aluminum drums and don't have the spacers, nor did others with them. I think the aluminum drums were a little wider than the iron drums, so the spacers weren't needed. Either that, and/or GM wanted to put something between the aluminum wheels and iron drums to prevent galvanic corrosion (wouldn't happen between aluminum wheels/drums)...

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Greg Westphal
'87 IROC 305TPI/A4