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Title: 400 thermoquad vacume advance.
Post by: JHolslin on July 28, 2016, 05:55:41 PM

so, assembling my project car. I noticed the vac, line coming off my thermoquad goes to the fire wall to some small box then to the distributer.
what is the function of this and should I be able to blow thru it (Because it seams to be blocked).
Thanks for any info,

Title: Re: 400 thermoquad vacume advance.
Post by: flyinlow on July 28, 2016, 07:08:21 PM

By pass it . Run carb to dist.

Title: Re: 400 thermoquad vacume advance.
Post by: 71charger_fan on July 29, 2016, 07:44:51 AM

Sounds like the OSAC valve which delays vacuum advance as an early method to reduce NOX emissions.

Title: Re: 400 thermoquad vacume advance.
Post by: JHolslin on July 31, 2016, 09:57:54 AM

that's the one, thanks for the info. I just drove the car for first time this morning. its been sitting in a barn for the last 30 years. Blew a tranny line.
Thanks.

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Mopar Garage => Engine, Transmission, Rearend, & Exhaust => Topic started by: JHolslin on July 28, 2016, 05:55:41 PM