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I noticed my 78 caprice 350 has a distributor with vacuum advance but I cant find the hose the goes to it. My question is is my car supposed to have vacuum advance if so where does it hook up to
3 posters
vacuum advance
scy135- Active Member (Tier 2)
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HeavyChevy77- Freshman Member (Tier 3)
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Check the" why is my car hard to start when cold" thread in the questions/problems section I posted a vacuum diagram pic
Here's the links to how mine are plumbed
https://i.servimg.com/u/f59/18/98/28/33/image14.jpg
https://i.servimg.com/u/f59/18/98/28/33/image16.jpg
https://i.servimg.com/u/f59/18/98/28/33/image17.jpg
https://i.servimg.com/u/f59/18/98/28/33/image18.jpg
Here's the links to how mine are plumbed
https://i.servimg.com/u/f59/18/98/28/33/image14.jpg
https://i.servimg.com/u/f59/18/98/28/33/image16.jpg
https://i.servimg.com/u/f59/18/98/28/33/image17.jpg
https://i.servimg.com/u/f59/18/98/28/33/image18.jpg
scy135- Active Member (Tier 2)
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Join date : 2015-04-04
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I looked around my carb and I found a small hose fitting tucked in the back it appears to be the same size so I'm gonna buy some hose. Hopefully that will help my car accelerate
GM B-Body Forum- Admin
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is yours completely stock? But yes there is a hose, and if you have the original quadrajet carb theres a small vac port off the front right side if your facing the carb, theres alot of vacuum ports coming off of them, but this one has a check valve, it will be round with 4 vac lines going to it, the front hose on that check valve goes all the way to the vac advance
scy135- Active Member (Tier 2)
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Yea my car is all stock ohh ok I guess someone messed with my vacuum lines prior because they're all taken up except for the one in the back
HeavyChevy77- Freshman Member (Tier 3)
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That back one is for the air cleaner or should be ..compare ur hose plumbing to mine in the other pics I sentscy135 wrote:Yea my car is all stock ohh ok I guess someone messed with my vacuum lines prior because they're all taken up except for the one in the back
Here's a vac diagram for high altitude 77 sbc 350
https://i.servimg.com/u/f59/18/98/28/33/image10.jpg