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Old 07-10-2007, 10:03 PM
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Boost/Vacuum gauge W/ Edelbrock RPM Air Gap

Does anybody know If an RPM air Gap manifold has a place to screw in a mechanical boost/vacuum gauge. Its the mechanical part, the clear tube with a 1/8 threaded Fitting. It also has a larger adapter. After looking at my manifold I think it will be the adapter that will fit.
Does anybody have a SUNPRO mechanical vacuum gauge like this. Im wondering where on the manifold it is supposed to go. There seems to be a few places I might be able to screw it in. Thanks

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Old 07-11-2007, 07:18 AM
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Most of the Edelbrock manifolds for Chevy's have a threaded vacuum port on the passenger side of the manifold, just behind and to the side of the carburetor. This is where you connect the vacuum for your HVAC and the vacuum line for an automatic transmission (TH350, etc,). You can use rubber hose and a vacuum T to connect a vacuum gauge there.

There is also usually both a manifold vacuum and a ported vacuum connection on the front of the carburetor, and you can T into the manifold vacuum line.

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