COMPONENT SPEC Primary jet 72 Secondary meter plate* 75 Power valve 6.5 Accelerator pump nozzle size 0.025 (0.031 w/-4 and newer) Secondary spring Plain Power valve channel restrictor 0.063 inch Idle feed restrictor diameter 0.032 0.034 inch 3310 Specs These are the specs listed in the Holley catalog for all the 0-3310 vacuum-secondary carburetors. Most of the specs are the same for all the different models with a few exceptions, which are also listed. PARTS LIST DESCRIPTION PN SOURCE PRICE Holley Renew kit 37-754 Summit Racing $32.95 Holley accelerator pump cam kit 20-12 Summit Racing 22.95 Holley vacuum-secondary spring kit 20-13 Summit Racing 11.95 Holley secondary meter block kit 34-13 Summit Racing 42.95 Holley quick-change cover kit 20-59 Summit Racing 15.95 Old-time carb guys use Chapstick on bowl and metering block gaskets to keep them from sticking. SOURCES Holley Performance Products 1801 Russellville Rd. Bowling Green KY 42101 270-782-2900 http://www.holley.com « | 1 | 2 | View Full Article By Jeff Smith Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!