Back in the 70's Holley was the best of the best.
You haven't had a tour of Hades until you've tried to tune an Rochester quadrajet so that isn't too lean or too rich at some point in the run!

The first thing you would do with a Chevy Camaro or Chevelle was pull the Rochester and get a Holley and an Edelbrock high rise intake manifold.
My `67 Chevelle 396 had a Holley 850 double pumper dual feed!
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Joe
See Porsche run. Run, Porsche, Run:
`87 911 Carrera