Manufacturer's Part Number:
Vacuum Secondary Upgrade Combos
Summit Racing® Vacuum Secondary Upgrade Pro Packs
Summit Racing Part Number:
Vacuum Secondary Spring Included:
Vacuum Secondary Spring Material:
Quick-Change Housing Included:
Quick-Change Housing Material:
Quick-Change Housing Finish:
Sold as a kit.
Designed to fit engines using a single 4-barrel carburetor.
Choose In-store pick-up (OH, GA, NV) on our web site.
These Summit® vacuum secondary upgrade Pro Packs can help you modify your carburetor's initial operating and full end rpm. They include an assortment of vacuum secondary springs, so you can choose which is best for your engine combination. They also include a quick-change housing and cover that allow you to make fast changes in no time at all. Optimize your engine rpm and tune-in your carburetor with one of these Summit® vacuum secondary upgrade Pro Packs.