Need and advance kit for your distributor? Allstar HEI advance curve kits fit all 1974-79 GM HEI distributors (except those that are computer-controlled). Kits include two weights, center plate, three sets of color-coded springs, two pairs of nylon bushings, and complete instructions for a hassle-free project. Increase power and engine acceleration with Allstar HEI advance curve kits.
Advance Weights Included:Yes
Advance Limit Bushings Included: Yes
Adjustable Vacuum Advance Included:No
Quantity: Sold as a kit.
Notes:Fits GM type HEI distributors. Will not work with computer controlled HEI.