I have had great luck with the Edelbrock 1406 600 cfm carbs on the roller 318 engines.
Pefect calibration with no goofing around jetting, good throttle response, good idle, and handy electric choke too.
They run out nice on many other engines on the engine test run stand too, like a stock build 360, besides the 318s.
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'89 Roller 318 ^^^ pictured here.
☆☆☆☆☆