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R.I.P Dennis Jarvis
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Discussion Starter #1
Can I replace my vacuum block, by just placing them in the top of the manifold?
 

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R.I.P Dennis Jarvis
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Discussion Starter #3
drill and tap the vacuum ports at the top of the manifild thus deleting the vacuum block. The only concern I have is will the heat of the manifold melt the vacuum hose?
 

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R.I.P Dennis Jarvis
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Discussion Starter #4
sorry I should have used fitting instead of connector
 

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think most of top would be too thin , get multy vac tap that threads in to existing threaded holes or fitting to thread block to int
 

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R.I.P Dennis Jarvis
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Discussion Starter #6
how about placing the fittings down where the 3/8" vacuum feed
 

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no reason you couldnt add taps pretty much anywhere on the IM plenum ;
even the steel 'freeze plug' on the end..

if youu pick a thin spot,
there's a style of fitting that passes through, then has a jam nut on the backside,
of course yu'd need to be able to get at the backside ;)

for a clean install I have contemplated tucking my vac block under the backside of the IM,
using the power brake port there, and thus hiding most of the vac lines,
may need to shield some lines from turbo heat...
 

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Premium Member
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Just make sure, if you place the fittings on a thinner piece of material, they are properly sealed. Thread tape doesnt like to work as well on thin material.
 

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R.I.P Dennis Jarvis
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Discussion Starter #9
Do you guys think this is a good idea to cleanup the engine bay????????
 

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I think it is a great idea. Problem is it is hard to tap the thing with it rolling around on the work bench lol. But yeah a great idea. You also don't have vac / boost spikes up and down on the plenum like a vac block. More consistent source
 

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Can I replace my vacuum block, by just placing them in the top of the manifold?
A local guy has an 87 GLHS with vacuum sources very neatly mounted to his upper half bu the previous owner. He wants to make his car stock so perhaps you two could make some kind of trade. He is on T-D but I forget his user name right now. I do have his name and phone # so if you are interested I could give him a call and he could join in on the thread.

Thanks
Randy
 

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R.I.P Dennis Jarvis
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5,369 Posts
Discussion Starter #12
I just bought a 2 peice intake. Should not take very long to drill and tap.
 

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R.I.P Dennis Jarvis
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Discussion Starter #13
I think it is a great idea. Problem is it is hard to tap the thing with it rolling around on the work bench lol. But yeah a great idea. You also don't have vac / boost spikes up and down on the plenum like a vac block. More consistent source
Rob here is how it turned out. Thanks for you help!

Dennis
 

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R.I.P Dennis Jarvis
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Discussion Starter #16

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R.I.P Dennis Jarvis
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Discussion Starter #17
"so a cleaner vac source then worked?"

Rob, It's a great vac source. No spikes and can handle plenty of volume.

Dennis
 
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