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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31
Manufactured from 356-T6 aluminum
Cylinder Head Specification: INTAKE CHAMBER VALVE SIZES EXHAUST VALVE INTAKE
Fitment of these systems to vehicles not made and operated in the USA may require custom tuning
This is a revised "universal" supercharging system designed for vehicles equipped with carbureted small block Chevrolet engines
- BR 81140 (SPRING UPGRADE)• Exhaust Valves: 1
LSI .650 DROP IN POLISHED & PEENED CHROME SILICONE VALVE SPRINGS Manufactured from 356-T6 aluminumCALL SHANON AT 507 445 3235 WITH ANY QUESTIONS. SKU: PAC1218X 16 Premium Polished & Peened Beehive LS1 Spring OD: 1. 290" 140 lbs @ 1. 800" 344 lbs @ 1. 150" Lift: 0. 650" Specifications: HEIGHT LOAD 2. 200 15 2. 150 30 2. 100 46 2. 050 62 2. 000 77 1. 950 93 1. 900 109 1. 850 124 1. 800 140 1. 750 156 1. 700 171 1. 650 187 1. 600 203 1. 550 218 1. 500 234 1. 450 250 1. 400 265 1. 350 281 1. 300 297 1. 250 312 1. 200 328 1. 150 344 1. 100 359 American
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