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10-30-2004, 01:03 AM
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#1 |
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Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,342
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Quadrajet info needed.
I got some questions about a qjet. What are these screws for in the pics?
What does the small vacuum used for? Thanks
__________________
RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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10-30-2004, 01:17 AM
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#2 |
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Registered User
Join Date: Oct 2004
Location: GOOD OL ALABAMA
Posts: 20
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the one on the fuel inlet side is the fast idle for the choke. the other i'm not sure it may control the the tension on rear lower butterflies.the vaccuum port is for the spark advance
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SO MANY TRUCKS SO LITTLE TIME 
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10-30-2004, 01:32 AM
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#3 |
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Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,342
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Spark advance? Would it have been used for a vac modulator?
__________________
RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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10-30-2004, 08:44 AM
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#4 |
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1969 Custom 30 wrecker
Join Date: Sep 2001
Location: Pottsville, Pa
Posts: 2,611
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Checked my 66 Impala w/327 that has a Qjet and that vac port is indeed used for the vacuum advance unit.
The item in the first pic on mine is the "gizmo" used for the fast idle. I believe this part may also stop the secondaries from opening if the choke is still on. (cold engine) Not 100% sure on that though. The transmission modulator line on goes to a block screwed into the intake in between the distributor and carb. My power brakes also connect there.
__________________
Bob 63 Impala 283/PG/3.36 (under restoration) 66 Impala 327/PG/3.36 66 Chevelle SS 409/M22/3.55 69 Chevelle 307/PG/3.08 (future restoration) 69 C10 short stepside 454/TH350/3.73 69 Custom 30 tow truck 350/4 spd/4.10 (resto done, CRUISIN TIME!) 71 Cheyenne 20 fleetside 350/4 spd/4.10 71 Chevelle 6/PG/3.08 72 Chevelle 454/M21/4.10 |
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