Holley 4160 Vacuum Secondary Springs

Now holley efi products power these cars and are dominating the performance world.
Holley 4160 vacuum secondary springs. Customs services and international tracking provided. From united states c 21 69 shipping. Holley equips all vacuum secondary carburetors from the factory with the. Find holley vacuum secondary spring kits 20 13.
They have an effect on initial operating and full upper rpm. The video describes the various. Holley has been the undisputed leader in fuel systems for over 100 years. 27 results for holley vacuum secondary springs.
2 product ratings holley 20 13 4150 4160 vacuum secondary adjustment 7pc spring kit. The color code determines the rate of the spring and consequently determines the opening rate of the secondaries. Secondary diaphragm spring kit p n 20 13 for models 4150 4160 vacuum activated secondary carburetors installation tuning instructions 199r8219 3 introduction. Holley carburetors have powered every nascar cup team and nearly every nhra pro stock champion for four decades.
These holley vacuum secondary spring kits are designed to fine tune your carburetor. The point in engine rpm that the secondary throttle begins to open is determined by the load created by the spring. Holley carburetors have powered every nascar cup team and nearly every nhra pro stock champion for four decades. Holley offers some tips on how to properly operate and adjust four barrel carburetors with vacuum secondary throttle blades.
Holley has been the undisputed leader in fuel systems for over 100 years. The video describes the various rate secondary springs how to change them and the testing procedures to follow to make sure the secondaries open properly for best performance. Each spring is color coded on the small end only. These are the springs included in holley s secondary diaphragm spring kit part number 20 13.
This kit contains a variety of secondary diaphragm springs to tailor the secondary opening characteristics to a particular engine and vehicle configuration.