A 1967 with Powerglide has how many carb return springs? The books I have consulted show two; each about 4 1/2" in length. My car has an additional (and shorter) spring on the front (intake bracket to carb). My gas pedal is "heavy" and this may be the reason. What is the purpose of spring #3? Or more basically perhaps, does it belong there?
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Re: 1967 Carb Linkage Return Springs
A member (by e-mail) directed me to the back of the AIM where I found that third spring. After some investigation here is my reply to him. The mystery has been solved.
"Indeed that third spring is shown at the back of the AIM under "Auto-Trans
to Carb Linkage." The third spring runs from the carb linkage back to a
tack-welded bracket on the crankcase vent tube. At the moment it is between
the top of the carb and the bracket at the front of the intake manifold. I
have looked at my car and here is what I have discovered.
I had an L-79 ...490 aluminum intake put on my base 327/300 engine last
summer. I bought all of the appropriate conversion parts including gas line,
choke parts, oil fill tube, longer crankcase vent tube, etc. And the car
runs very well aside from the stiff gas peddle. Today I noted that the L-79
crankcase vent tube does not have the bracket for the spring. So the spring
was installed at the front of the engine. This perplexed me a bit until I
realized that in 1967 the L-79 was not available with PowerGlide! Hence the
absence of the bracket on the vent tube. I have the 327/300 vent tube in the
basement and the bracket is there. So I can only conclude that hybrids
always involve some compromises. As the car runs well I will leave it alone.
Thanks for your help!"
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