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the BB-2 Plus has a 312 cc intake port and flows over 340 cfm with only
580 Spread Port 85/125 GM # 24502653 / Edelbrock # 2955
Chamber Volume: 62cc
880 EXHAUST 122 138 171 198 216 229
COMP CAM 1620-16 BBC ULTRA PRO MAGNUM 1.7 ROLLER ROCKERS AND NUTS the BB-2 Plus has aCALL SHANON AT 507 445 3235 WITH ANY QUESTIONS. COMP Cams Big Block Chevy Ultra Pro Magnum Roller Rockers#1620 16 7 16" Rocker Stud 1. 7 Ratio POLY LOCKS INCLUDED Ultra Pro Magnum Rockers are made of 8650 chromemoly steel. This material is three times stronger than 7075 T6 aluminum which is used for most aluminum rocker arms. Ultra Pro Magnum Rockers have less weight (5%) at the valve train than most aluminum rockers. This means more RPM and valve
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