Don't believe everything you read.
Your 400 automatic does NOT require, nor is it equipped with a cable from the throttle. The 350, and 700 transmission do have the cable. The 700 MUST have it...on the 350, it's
only function is for passing gear.
The idle solenoid will be needed if you plan on actually running the A/C, whether it is from Edlebrock, or somewhere else.
Welcome to C3VR, btw!
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Joel Adams
C3VR Lifetime Member #56
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"