73 emissions and

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Re: 73 emissions and "stuff" [Re: screamindriver] #1463740 07/07/13 02:13 PM 07/07/13 02:13 PM
Joined: Sep 2005 Posts: 12,481 Chino Valley RodStRace I Live Here
RodStRace I Live Here Joined: Sep 2005 Posts: 12,481 Chino Valley	Yep, get a Motor, Mitchell or OE manual. The triple one is for dist. vacuum. IIRC, the bottom is manifold vacuum (to cool off when overheated) the middle is to dist. and the top is ported (blocked until warmed up, for faster warmup). The rear one with the brake booster center also has small one. That is for HVAC as mentioned, and the other may be used for the EGR, since 72 was floor jet but 73 was a valve. You will also have a vacuum line to the air cleaner for the snorkel and there is usually a thermal fitting for the dist hose too. Oh, and a vacuum amplifier for the EGR. The EGR will be one off the amplifier, with the small manifold line to the amplifier (small feed), and a ported one (signal) to actuate the amplifier.

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