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 Post subject: pcv and vacuum routing
PostPosted:Wed May 18, 2016 9:51 am 
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Small Block

Joined:Sat Aug 22, 2015 11:47 am
Posts:33
Car Details:Z28..1979
Little bit confused on this, and this could be the reason why it stalls when put into gear unless I have the tickover at around 1200rpm, I dont know what cam has been fitted, but it idles ok around 750/800 rpm off load..

The carb is a quadrajet on and Edelbrock performer manifold..

Anybody?, of all the quadrajet pictures ive seen, they have the fuel inlet coming in from the left side at 90degrees to mine, I have three vacuum port on the front, all small bore, the one on the right is going to vac advance, the one lower left goes to choke pull off and the one above goes to PCV, at the rear of the carb is a large port that is conected to brake booster, the brown pipe on the left goes to the manifold on conected to the transmission, is this right? Or do I connect the brown trans pipe to the front top left, connect the PCV to the rear large port on the carb and the booster pipe to the manifold??? head fried.... thanks chaps, also why arent the secondaries opening, even though the choke pull off does its job, they will open if i push the lever..again thanks guys..


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pcv and vacuum routing

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PostPosted:Wed May 18, 2016 12:22 pm 
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Big Block
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Joined:Sun Jan 13, 2013 7:00 am
Posts:1158
Car Details:1986 Camaro, bought into Spain by me in 1993.
305 replaced by a 355, 750 Demon carb, RPM AirGap intake, Brodix heads, Hedman Hedders, 3" Flowmaster exhaust.
Wheels are Summit aluminium 5 spokes, tyres are 245 rear 225 front BF Goodrich.
B/M transmission, battery relocated to the rear, GoodMark 4" cowl steel hood.
Location:Spain East Coast
Can´t find my Quadrajet book any where....dammit, so at the moment I can´t help with vacuum line routing/connections.. :thumbdown:

They did come with front inlets and side.
You won´t see the secondaries opening as you rev the car stationary, they only open under load....driving.

The best day of my Camaro owning life was to dump the QJet, admitted it was a computer controlled one and a right piece of junk.

Get a life get a square bore. :lol:

BTW plenty of QJet related videos on YouTube.


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PostPosted:Wed May 18, 2016 9:50 pm 
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Small Block

Joined:Sat Aug 22, 2015 11:47 am
Posts:33
Car Details:Z28..1979
It only has three vac ports on the front and one on the rear, I was thinking of just getting a new carb anyway, going to fiddle with idle mixture tomorrow..
As for YouTube, I must have looked at dozens, not one has the carb I have!! I will get there though.


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PostPosted:Thu May 19, 2016 5:15 pm 
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Big Block
User avatar

Joined:Sun Jan 13, 2013 7:00 am
Posts:1158
Car Details:1986 Camaro, bought into Spain by me in 1993.
305 replaced by a 355, 750 Demon carb, RPM AirGap intake, Brodix heads, Hedman Hedders, 3" Flowmaster exhaust.
Wheels are Summit aluminium 5 spokes, tyres are 245 rear 225 front BF Goodrich.
B/M transmission, battery relocated to the rear, GoodMark 4" cowl steel hood.
Location:Spain East Coast
Could this help any ?

Image


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PostPosted:Sun May 22, 2016 9:56 am 
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Small Block

Joined:Sat Aug 22, 2015 11:47 am
Posts:33
Car Details:Z28..1979
Thanks, but mine is different, I have managed to get it all sorted now, running strong..


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