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Discussion Starter #1 (Edited)
I've got a '70 Buick Quadrajet (7040244) on my 350 small block, missing the choke thermostat and a spring.

I think this is the right kit for the thermostat, cover, and rod:

My carb (right) is still missing the spring on the pull-off/vacuum brake (circled in blue). What's the part name for that?

398127
 

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Discussion Starter #3
Yikes! That thermostat costs more than the carb is worth. I'll have to either find a junkyard part, an electric choke conversion kit, or buy a new carb.
 

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I checked and none of the Q jets I have on the shelf have that spring. Maybe it was only used on certain applications?
 

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I probably have a choke stove in my Q-jet parts. I'll look tomorrow.
I also looked at all my divorced choke Q-jets and one of them had the spring.
 

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