Holley Secondary Spring Chart. Web learn how to change the rate secondary springs of your holley carburetor with vacuum secondary throttle blades, a. Web holley equips all vacuum secondary carburetors from the factory with the heaviest (black) spring, which opens.
Web learn how to change the rate secondary springs of your holley carburetor with vacuum secondary throttle blades, a. Web to increase the secondary opening speed install a lighter spring. Web holley equips all vacuum secondary carburetors from the factory with the heaviest (black) spring, which opens.
Web to increase the secondary opening speed install a lighter spring. Web holley equips all vacuum secondary carburetors from the factory with the heaviest (black) spring, which opens. Web learn how to change the rate secondary springs of your holley carburetor with vacuum secondary throttle blades, a. Web to increase the secondary opening speed install a lighter spring.
