Choke thermostat

[Sixt8Chrgr]

Is the choke thermostat (topside) supposed to be painted intake manifold color on a 68 440 or 383, or left natural? Also is the correct assembly a Holley choke thermostat that fits flush on the intake manifold for a Carter AVS carb?

Thanks

Lawrence

[maxwellwedge]

They were not painted - neither were their attaching bolt(s).

What is the number stamped on the Holley? I have only seen Holley chokes for Holley carbs and Carter chokes for Carter carbs.

[Sixt8Chrgr]

I don't have a correct Holley carb...what I have are two choke assemblies, one the previously mentioned Holley and a Carter choke assembly. I do have the correct Carter AVS carb for a 383 auto with air which is what my car is originally. Now I am running a mildly built 440 with a Holley carb Eddy performer rpm with no choke. I am considering putting the stock 440 manifild back on the car and removing the Holley. I would like to just use the Carter that I have (from the 383) but I assume I will have to rejet it for the 440? The Holley choke assembly was attached to the 68 440 manifold that I purchased. I have no idea if it was the correct piece but it was old looking and cruddy. I have cleaned it up and it looks real good.

[maxwellwedge]

What number is on the Carter choke?

Not sure about your re-jetting - but the 383 used a smaller carb. It will probably run but not perform anywhere near as well up top as the bigger 440 carb.

[Sixt8Chrgr]

No number on the Carter.
Were the Carter carbs for the 383 and 440 different size carb or just the inside different?

[gtx6970]

Is the choke thermostat (topside) supposed to be painted intake manifold color on a 68 440 or 383, or left natural? Also is the correct assembly a Holley choke thermostat that fits flush on the intake manifold for a Carter AVS carb?

Thanks

Lawrence

1968 440 R/t is going to be an AVS carb and carter choke , choke will have  45 stamped on the  plate

and yes, it sits flush with the top of the manifold under the carb

[Sixt8Chrgr]

Couple of questions:

What does the Carter choke thermostat in the above picture fit?
The 68 440 intake manifold that I have had this choke thermostat in it. What does it fit? Were there not some 68 383's and 440's with Holleys from the factory? I know there were some 69 383's with them.

Thanks