PAC-1357-16 DUAL CHROME SILICONE RACING VALVE SPRINGS 520 INTAKE 148 242 335

520 INTAKE      148                242               335                 406                464               505                535              546

500 HP engines built in our in-house machine shop

860 EXHAUST 110             162              204            238             265              288             320             328

STS BB-1                   305 cc           119 cc           2

Exhaust Valve: 1

PAC-1357-16 DUAL CHROME SILICONE RACING VALVE SPRINGS 520 INTAKE 148 242 335CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS. Specifications: SKU: PAC1357 16 Dual Drag Racing Spring. OD: 1. 500" 375 lbs @ 2. 150" 1116 lbs @ 1. 200" Lift: 0. 950" Frequency: 30,562 CPM American made with Nano Peen technology, ID and OD chamfers, and exotic heat treat. We carry the complete line of PAC Products. Price is for 16. CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS. CONTACT US THE PRICE IS NEGOTIABLE BEST OFFER After purchasing, pay