John Z vacuum seyup

[fireZ]

Does anyone have a picture of John Z vacuum setup. My 302 is running alright and I was wondering about doing Johns setup on the car. Do I need to do any other changes when I do the vacuum setup John suggests

[Sauron327]

http://www.camaros.org/forum/index.php?topic=4045.45

[fireZ]

Thanks for getting that for me

[Sauron327]

Your welcome. If only my memory continuously operated at 100% peak efficiency.

[fireZ]

Yes if I could remember what I use to know .Have you tried this vacuum hookup.Did it work without any other adjustments to the engine?

[Sauron327]

If you mean from ported to full, I did as per John's advice. I only adjusted the carb afterwords for optimum vacuum. But I also changed my can to an Echlin VC-1810.

[fireZ]

Yes I am going to the full vacuum from ported. Is the idle at the carb the only thing to readjust? Thanks again

[Sauron327]

Pretty much, unless you want to check dwell/timing while you have your head under there.

[fireZ]

I am having some difficulty finding the vacuum advance that John Z recommends. Any idea where they can be bought?

[Sauron327]

GM Parts Direct.
Or:
AC-Delco #D1316A or D1312C
Niehoff DR305
Borg-Warner V329
Standard VC-177
GM #1116236
Did you read the 4 pages in the link I posted? It's in there.

[fireZ]

Yes I did read it and checked 3 different suppliers. I did not find a store that had any of them listed in stock. I will keep looking. Thanks

[Sauron327]

I hunted briefly: http://www.amazon.com/ACDelco-D1312C-Distributor-Vacuum-Control/dp/B000C9OKNM/ref=pd_rhf_p_t_1

I got one at GMPD but can no longer locate it on their site.

[fireZ]

Thanks I will try and order one

[Mark]

Rockauto.com has one VC-177 left for about 3 bucks.

They also list the D1316C as being a non stock item available for 14.38.

I've got half a dozen of various Vacuum advance cans that I bought while I was searching for the best one for my car.

[JohnZ]

I buy quite a few of them, and GMPartsDirect.com has them - GM #88924985, AC-Delco #D1312C. Only one company makes them (Standard), and the others re-box them; all are stamped "B28" on the bracket. They used to be boxed as the VC-1810 - starts pulling at 4" Hg., fully-deployed at 8" Hg., providing 15*-16* of advance.