Holley Carb Vacuum Diagram
We ve added holley s 2x4 quick change housing kit that includes small nipples on each lid that connect a.
Holley carb vacuum diagram. Each holley power valve is stamped with a number to indicate its vacuum opening point. Holley products for gm s popular ls engine are dominating the ls scene as well. For example the number 65 indicates that the valve will open when engine vacuum drops to in. As mentioned earlier by selecting the correct spring for the vacuum chamber you take care of 90 percent of the tuning of the secondaries.
Then invert the bowl and adjust the float level by turning the adjustment nut until the float is level. Full size view holley parts page diagram. The information in this manual covers carburetor models 0 80457sa 0 80458sa 0 1850c and 0 1850sa. This tunnel ram is set up with a pair of 0 1850 600 cfm holley vacuum secondary carbs.
For most pictures the 0 80457sa carburetor equipped with electric choke is shown in the illustrations in this manual. From replacement fuel bowls to power valves and jets and everything thing in between. Holley parts page diagram. Hg 85 indicates in.
In fact it is not at all complex but it can be time consuming. Now holley efi products power these cars and are dominating the performance world. Vacuum secondary tuning. Considerable mystery surrounds the tuning of the secondaries on a holley carb.
Full size view. Holley offers a wide variety of replacement and performance enhancing components for your carburetor. 111 primary metering body filler 112 vacuum tube plug 113 idle limiter cap 114 idle adjustment needle 115 idle adjustment needle seal 116 spark hole plu g 117 metering body vent baffle 118 primary metering jet 119 tube o ring assembly 120 primary metering body gasket 121 primary power valve assembly 122 primary power valve gasket. Tour through a typical holley vacuum secondary four barrel carburetor holley aa aa 1 parts page diagram.
Holley parts page diagram.