454 420HP/470TQ

• HEADS: GM 454/502 H.O.
• COMPRESSION RATIO: 8.8:1
• INTAKE: GM DUAL PLANE ALUMINUM
• CARB: HOLLEY 750CFM (MODIFIED:FLOWS 920CFM)
• CAM: GM MARK 5 H.O. HYDRAULIC
• DURATION: 224/224@.050
• VALVE LIFT: .510/.510@1.7
• LSA: 116 DEGREES

Horsepower/rpm

• 249/3000
• 308/3500
• 353/4000
• 386/4500
• 412/5000
• -------------
• 421/5300-PEAK HP

Torque/rpm

• 437/3000
• 463/3500
• 464/4000
• 450/4500
• 433/5000
• -------------
• 470/3800-PEAK TQ