Quote:
Originally Posted by grs
I believe jb1, jb3, or jb5 has something to do with the power booster. Some boosters are single diaphragm, and some are two. And don't get a Cardon master cyl. I am on my third one. I have an 87. Mine has a plastic reservoir. I don't know if 87 had an all metal master or not.
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The chart I posted above is what was used to release the brake parts to the factory. It shows the differences between JB1, JB3, JB5, etc.
For '87 the master cylinder was aluminum with a plastic reservoir (for vacuum boost trucks). Hydro boost was cast iron.
K