Quote:
Originally Posted by Doug
Since the engine is installed you probably don't have much maneuvering room, even for hammering. One thing you may want to try is cutting/grinding the heads of the bolts off with a Dremel or cutoff tool and sliding the manifold out? off? Even if you don't clear the bolts you can cut them off as needed leaving enough of the stems to work with using use vice grips or pipe wrench to turn the bolt studs (after heating them or applying penetrating oil doses). EASY does it!
When you install the longbranch, make sure there are enough hole-threads so the bolts can be fully torqued. (The holes are not threaded all the way to the bottom.) Also, you should use the "thick" solid washers that are used on some Pontiac manifolds.
Good luck!
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DITTO. Muffler shops are not good at Manifold Removal. Most are hacks and dont work on anything above the head pipe. They go after the quick in and out pipes and muffler job. It takes finesse and the correct tools to remove them without breaking them off. If they dont turn out without enough effort to break them loose, stop right there and grind off the heads, pull the manifold away from the head, then cut off the remaining portion, just like mentioned above.