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Hey forum, this is my first time back on this site since late 2013. (i forgot my old account info), anyway, i have a bit of confusion about my intake manifold on my '78 Silver Anniversary. That vacuum fitting by my Thermostat housing, what's the reason for it? It doesn't have lines running to it so i'm a bit concerned. Excuse my ignorance about the car, i'm still learning things about it i guess.
It it isn't leaking coolant, and it doesn't bother you, then I'd suggest leaving it as-is. If you pull it out and put in a plug and it leaks coolant, you might wish you had just left it alone. Especially if you end up stripping the threads when pulling it out, which happens.
Hey forum, this is my first time back on this site since late 2013. (i forgot my old account info), anyway, i have a bit of confusion about my intake manifold on my '78 Silver Anniversary. That vacuum fitting by my Thermostat housing, what's the reason for it? It doesn't have lines running to it so i'm a bit concerned. Excuse my ignorance about the car, i'm still learning things about it i guess.
Thanks, Gary.
Back when alaska had immisions I had to take my vette to the referee station because it had after market aluminum heads, intake and camshaft which caused the Im stations to fail it even with the carb numbers and cards. The only thing I had to do to pass was put the vaccum switch on. It passed all the pipe tests. The point is if you have Im they might consider it original equipment and want it there to pass so if you do take it off, save it.
Last edited by bluedawg; May 26, 2016 at 11:12 AM.
Intake Manifold question on L82
