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Ask Away! with Jeff Smith: Understanding Carburetor Power Valve Channel Restrictors
I’ve read your article on carb tuning about 5 times. I have a 650 cfm SS-AN annular discharge Quick Fuel carburetor with the changeable jets behind the power valve. Are […]
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small block chevy in engine bay of an amc rambler classic

Ask Away! with Jeff Smith: Using E85 or Octane Boosters in a High-Compression 283 SBC with a Cruising-Speed Stumble
I am an old school pepper tree mechanic, and not quite in tune with 12:1 compression ratio small block Chevys. I have a 1962 Rambler Classic with a 283 with 12:1 […]
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external electric and mechanical fuel pumps from Quick Fuel

Pump Guide: A Look at Quick Fuel’s Mechanical and Electric Fuel Pumps — and Which is Right for You
In simpler times, carburetors relied on mechanical fuel pumps, and EFI engines required high-pressure electric pumps. Things aren’t so simple anymore because times have definitely changed. Even the most beastly […]
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Two-Circuit vs. Three-Circuit Metering Systems for Race Applications

Carb Science: Two-Circuit vs. Three-Circuit Metering Systems for Race Applications
Before electronic fuel injection’s microprocessors and sensors revolutionized fuel delivery, carburetors fueled high performance machines using mechanical components like metering systems and boosters. Over the years, carburetor manufacturers have developed different metering systems which […]