17058263 Settings at start up

[wheelsY88ta]

I'm getting ready to fire up the rebuilt 400 for the first time and get it broke in.

Engine was rebuilt by Len Williams and set up similar to his 400 Long Block builds.

What are the base settings, Idle mixture screws etc., for this?

I used Cliff's rebuild kit for the carb and 400 specs.  I've modified the carb and HEI distributor vacuum advance according to Cliff's book.

What would be the best place to start such as how far should the mixture screws be open?  1 1/2 turns, 2 turns, etc.

Also.....would an electric choke be beneficial over the hot air choke for this set up?

Thanks for all the information.

[Cliff Ruggles]

What has been done to the carburetor?

What are the engine specs?

Excellent carburetor but it would need some help in several areas if the engine has a pretty hefty cam in it, or other modifications as that carb was used on a pretty "anemic" 400 with really low compression and tiny cam in it from the factory.....