| Re: [GMCnet] what a difference a spring makes [message #325359 is a reply to message #325352] |
Mon, 23 October 2017 21:19   |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma:
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Senior Member |
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Keith,
It will be interesting to see if this change has any effect on your fuel economy.
I don't have an A/F gauge, so I don't have access to the info you have, but my spark plugs indicate a slightly lean mixture even with #72 main jets. I have no idea which power piston spring is in my carb, but it sounds like it may be worth my while to change it to the one you recommend just to be sure.
I have always read (on this forum) that the proper spring is red, but I think the color code may have been changed and the important thing is the vacuum spec on the spring, not the color.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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