Vacuum Source

[kspageddie]

Well my carbs are working great. It idles around 800 RPM and at times can be smooth as silk. Other times the idle is a little choppy. I want to get a vacuum gauge to help set up my carbs better. But I have a few questions. I do not have any vacuum ports on the carbs other than the SCV line that runs to the dist. So, where do I hook up my gauge. The intake does not have any vacuum ports either. There is a nut on the intake below the center carb. You can see what I am talking about in this picture. Could I use that port as a vacuum source and if so, can I also use that for vacuum source for me DII set up that I am planning?




http://www.cardomain.com/member_pages/s ... 4_full.jpg

 

[simon]

yup.

I´d also take this port for vacuum advance and plug the vacuum outlets on all three SCVs.

Do you plan on keeping the choke plates on the outboard carbs?

 

[kspageddie]

Thanks for the info. All I have to do is find a vacuum port that will screw into the intake. Yes, I will be removing the choke plates from the two end carbs.

I just order my DSII today from http://www.reincarnation-automotive.com/index.html. This is a new unit that is recurved to match my engine. The DSII will cost me 145.00 this includes shipping, the custom recurve and the cap adapter. I am going to use the GM 4 pin module. Hopefully, I will have this completed in a few weeks.

If you are thinking about getting the Duraspark you should check out the website. Scott was very helpful and responded back to all my questions very quickly.