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tubman · 08-18-2017, 08:18 PM

Holley 2100's or 2110's . Used on early "Y" blocks. Those aren't power valves. I believe they are called "Spark Control Valves". They look a lot like power valves, but are NOT interchangeable. If you took the carb apart, you'd find a regular power valve where it's supposed to be.

08-18-2017, 08:18 PM	#7
tubman Senior Member Join Date: Dec 2013 Location: Minnesota, Florida Keys Posts: 10,413	Re: What carbs are these ? Holley 2100's or 2110's . Used on early "Y" blocks. Those aren't power valves. I believe they are called "Spark Control Valves". They look a lot like power valves, but are NOT interchangeable. If you took the carb apart, you'd find a regular power valve where it's supposed to be.