How to Adjust a Holley on a Cammed Motor?

Answer A cammed motor creates less vacuum pressure both during idle and acceleration. This is due to the longer duration of the cam compared to a stock cam. Stock cammed engines generally run around 16- t... Read More »

Top Q&A For: How to Adjust a Holley on a Cammed Motor

How to Adjust a Holley 670?

One of the more unique Holley carburetors, the 670 (named for its 670 cubic feet per minute of air flow) is designed specifically for low-rider vehicles that pitch drastically to the left, right an... Read More »

How to Adjust the Air on the Holley 650?

Adjusting the air on a Holley 650 will allow you to tune the air fuel mixture of the carburetor. This is needed when the engine is bogging or backfiring. Bogging occurs when too little air is intro... Read More »

How to Adjust Holley 600 Carburetors?

The Holley 600 carburetor is a large system that is designed to move air through the carburetor at a rate of 600 cfm. Adjusting the idle screws on this model is very similar to that of the smaller ... Read More »

How to Adjust a Holley 650 Carburetor?

The Holley 650 is a high-performance big bore carburetor designed for large displacement engines. It's rated at 650 CFM (cubic feet per minute) of air flow and is a 4-barrel, double pumper design. ... Read More »