360 LA getting oil in #3 cylinder.

I just now started working on the Duster again. I drained the coolant, removed
an AC bracket that attached to the intake , all hoses, temp sending unit, distributor, and 12 intake manifold bolts. AC compressor blocks most of front of intake and there isn't much room to get to the rear of intake. My SBM books say remove bolts, then remove intake. Yeah, right! I'm sure this is the best place to get advice and tips to pry off this glued down intake without breaking something. Thanks in advance.

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All intakes can be stinkers to break loose. The '70s were the worst with the big AC compressor and all the emissions hoses crap. Usually there is a bit of a "tab" at the sides of the manifold to pry on, or tap a screw driver under one front corner on the china rail. That should break it loose.
See those tabs in line with the #1 and #2 intake ports. Those you can pry on.