Throttle Return Spring(s)?
Thread Starter
Drifting
Joined: Jun 2007
Posts: 1,640
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From: DeBary Fl. Amateur Radio Operator K3CQR
Throttle Return Spring(s)?
Hello from cool Fl. 62 as I write. Should my 67 327/350 Have 1 or 2 return springs. Mine has one hooking in front of the Holley. Thanks, Bill.
Burning Brakes
Joined: Aug 2007
Posts: 814
Likes: 7
From: toronto ontario
Mine also had two, however my mechanic suggested that two
increases the tension in that area and can cause some type of internal damage to the carb over time. Maybe someone else can explain in more detail. I just run one now and carry a spare.
increases the tension in that area and can cause some type of internal damage to the carb over time. Maybe someone else can explain in more detail. I just run one now and carry a spare.
Le Mans Master
Joined: Mar 2005
Posts: 7,631
Likes: 11
From: Rocklin California
If the one spring is in good condition, not fatigued, I don't see any reason for the second. Now if you are a racer with heavy duty s-it, maybe a second one to make sure the throttle returns in case there is some kind of issue 
Tech Contributor
Joined: May 2005
Posts: 15,575
Likes: 118
From: Conroe Texas
I always use 2. Although 1 is the original design, for a few bucks why not put 2 on and have the extra protection?
I watched a friend flip and roll their split-window when a carb spring failed, allowing the engine vacuum to suck the carb wide open.
I watched a friend flip and roll their split-window when a carb spring failed, allowing the engine vacuum to suck the carb wide open.
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3 here 
2 on rear carb (1 inside other) and 1 on front carb
2 on rear carb (1 inside other) and 1 on front carb
Thread Starter
Drifting
Joined: Jun 2007
Posts: 1,640
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From: DeBary Fl. Amateur Radio Operator K3CQR
Black Magic, That is beautiful, hard to see the springs with all that chrome. NICE job. I'm going to my FLAP store to get a smaller diameter spring to fit inside the large one I have. Thanks to all for your input. Bill.
Racer
Joined: Aug 2007
Posts: 263
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From: Los Angeles California
P.S. Black Magic... that is, indeed, beautiful.
