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LS Engine Performance - LS Power For Less

GM Engineers Tell Super Chevy How To Build The Best Budget LS Combos With Factory Parts.

Photography by Jim McCraw, GM Corp
PART NUMBER 12480110
ASA CAM
107 INTAKE CENTERLINE 110 LDA
1.7 ROCKER RATIO
Lift:
  @Cam @Valve  
  EXHAUST: 0.309 0.523  
  INTAKE: 0.309 0.523  
Cam Timing@0.004-inch Tappet Lift:
  Open Close Adv. Duration
  EXHAUST: 79 BBDC 40 ATDC 299
  INTAKE: 32 BTDC 73 ABDC 285
Cam Timing@0.050-inch Tappet Lift:
  Open Close Duration
  EXHAUST: 48 BBDC 7 ATDC 235
  INTAKE: 3 BTDC 41 ABDC 224
8606 WORLD CHALLENGE GEN3 GEOMETRY:
106 DEGREE LDA 106 INTAKE CENTERLINE, VALVE CLEARANCE
PISTONS REQUIRED!!
1.70 EXHAUST ROCKER RATIO
1.70 INTAKE ROCKER RATIO
Lift:
  @Cam @Valve  
  EXHAUST: 0.335 0.570  
  INTAKE: 0.335 0.570  
Cam Timing@0.004-inch Tappet Lift:
  Open Close Adv. Duration
  EXHAUST: 79 BBDC 51 ATDC 310
  INTAKE: 38 BTDC 80 ABDC 298
Cam Timing@0.050-inch Tappet Lift:
  Open Close Duration
  EXHAUST: 51 BBDC 20 ATDC 251
  INTAKE: 12 BTDC 47 ABDC 239
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