Clams Canino

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.

Alan 71

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

gbvette62

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

Clams Canino

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.
-W