Choke Part Number (GM)
#1
Melting Slicks
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Can someone please tell me the correct GM part number for the 71-74 350 choke thermostat depicted here?
http://www.zip-corvette.com/70-454-7...ke-spring.html
Thanks!
PS: Looks to me like the rod hook up is about at 5 O-clock right?
I ordered on from an online vendor and received one with the rod hook up at 3 O-clock.
http://www.zip-corvette.com/70-454-7...ke-spring.html
Thanks!
PS: Looks to me like the rod hook up is about at 5 O-clock right?
I ordered on from an online vendor and received one with the rod hook up at 3 O-clock.
#2
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Hi CC,
The number stamped on the original bi-metallic spring from my 71 is 3792.
My bet would be that you can use the one that you received.
Hooking up the rod will 'tighten' the coil a little, but the heat will still have the same affect on it... it uncoils as the temperature rises and the rod will open the choke plate.
Regards,
Alan
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The number stamped on the original bi-metallic spring from my 71 is 3792.
My bet would be that you can use the one that you received.
Hooking up the rod will 'tighten' the coil a little, but the heat will still have the same affect on it... it uncoils as the temperature rises and the rod will open the choke plate.
Regards,
Alan
![](http://imagizer.imageshack.us/v2/640x480q90/924/8Vtg4T.jpg)
![](http://imagizer.imageshack.us/v2/640x480q90/922/xnqm2N.jpg)
Last edited by Alan 71; 09-21-2017 at 01:38 PM.
#3
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The Corvette parts book lists different choke springs for 70-74 350's with a Q-Jet.
1970 - 3973497
1971 - 3989060
1972 - 3998940
1973-74 - 326079
1970 - 3973497
1971 - 3989060
1972 - 3998940
1973-74 - 326079
#4
Melting Slicks
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Thanks to both of you.
I just manually wound the spring a bit tighter, and when it relaxed it came back to 4 O-clock. One more try (a bit harder) and it relaxed to 5 O-clock where it belongs.![Smile](https://www.corvetteforum.com/forums/images/smilies/smile5.gif)
-W
I just manually wound the spring a bit tighter, and when it relaxed it came back to 4 O-clock. One more try (a bit harder) and it relaxed to 5 O-clock where it belongs.
![Smile](https://www.corvetteforum.com/forums/images/smilies/smile5.gif)
-W