Q Jet info needed
Thread Starter
Racer
Joined: May 2009
Posts: 316
Likes: 1
Q Jet info needed
I am switching out my Holley spreadbore carb for a Q jet on my 68 327/350 and want to be ready to install it without surprises. Not being familiar with the Q jets attachments I have included an attached photo for questions on the pictured rear of the carb.
1. What does the threaded hole at the base of the carb attach to and if not applicable what size plug will fit to plug it?
2. just above that hole is a rectangle square showing 2 screw holes, what attaches to this?
3. there is the brass tube at the top, what attaches here?
Lastly at the fuel inlet on the holley its a male fitting that my rubber fuel line attaches to. The q jet has a threaded female inlet. are there male threaded inlets that can be screwed in the Q jet so i can keep the rubber fuel line set up I have? What size do I need?
1. What does the threaded hole at the base of the carb attach to and if not applicable what size plug will fit to plug it?
2. just above that hole is a rectangle square showing 2 screw holes, what attaches to this?
3. there is the brass tube at the top, what attaches here?
Lastly at the fuel inlet on the holley its a male fitting that my rubber fuel line attaches to. The q jet has a threaded female inlet. are there male threaded inlets that can be screwed in the Q jet so i can keep the rubber fuel line set up I have? What size do I need?
Race Director
Joined: May 2006
Posts: 18,695
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1. What is the number of the Quadrajet? Is it intended for a 68 327/350?
2. The plug is for a fitting that the power brakes and other vacuum systems attached to.
3. Nothing is attached to the rectangle square showing 2 screw holes.
4. Not sure about the tube, could be fresh air supply for hot air choke, but again is it the correct carburetor?
2. The plug is for a fitting that the power brakes and other vacuum systems attached to.
3. Nothing is attached to the rectangle square showing 2 screw holes.
4. Not sure about the tube, could be fresh air supply for hot air choke, but again is it the correct carburetor?
Last edited by MelWff; Mar 7, 2017 at 03:27 PM.
Team Owner
Joined: Sep 2006
Posts: 31,214
Likes: 4,302
From: Westminster Maryland
Hi G,
It would be good to see the other side of the carb too.
Is it set up for the choke and vacuum advance you're going to be using?
If you don't have what you'll need, now might be a good time to round up those parts.
Regards,
Alan
It would be good to see the other side of the carb too.
Is it set up for the choke and vacuum advance you're going to be using?
If you don't have what you'll need, now might be a good time to round up those parts.
Regards,
Alan
Tech Contributor
Joined: Aug 1999
Posts: 14,375
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From: At my Bar drinking and wrenching in Lafayette Colorado
https://www.corvetteforum.com/forums...rajet-4mv.html
Lars
Last edited by lars; Mar 7, 2017 at 07:23 PM.
