Quote:
Originally Posted by Mitsumark
I just think I would benefit from removing the system as it seems it has many occasions of failure in some way.I sure dont want to be removing the plenum everytime there is a drivabilty issue.I would be able to automatically rule out all those associated parts.ive also read on this very site of very rare occasions of secondary port parts(linkage & hardware) being ingested into cylinders and jamming valves.If I have the option to avoid that its a no brainer.I guess Im answering my own question as Im typing.If I do decide to temporarily keep secondary operation,anyone here have a working vac pump or know where to get one?
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That happened to Daryll (Goldcylon) and that was extremely rare. Actually there are NOT hardly any occasions of failure of secondaries once they are maintained and it is just as much fun to leave them as it is to remove them
Also rare are broken timing chains which I have heard of two.
There are more failures associated with injectors but once replaced they last a very long time (That applies to almost every part on the LT5....once replaced if required....they last a very long time). As far as pulling the Plenum......I can pull a plenum in less than 10 minutes if you do not have to mess with coolant 
It is the first time cam cover removal (Torx 40s) with engine in car that is a BEAR 
I had five Torx 40s that WOULD NOT come out without considerable encouragement which I found the secret medicine.
TOP END RESTORATION
Post 29 - Plenum Pull
Post 30 - LT5 IH, Fuel Rails, Plenum Install Tricks
Post 31 - Vacuum Systems 90' and 91' (Secondary and Cruize/HVAC)
Post 32 - Eliminated IH Housing and Throttle Body (TB) Coolant system Tricks
Post 33 - Eliminated Secondary Throttles/shafts Tricks
Post 34 - Stainless Steel Air Box and Air Filter (L98 and LT5)
Post 63 - Removing Plenum (including the 10 minute Plenum Removal)