Chevrolet Big Block V-8
Chevrolet: 454 Mark IV LS6, 454 Gen V H.O., SysteMAX carburetor conversion kit
HLY-300-514 $3200
Comments/Recommendations
This SysteMAX kit is similar to the Gen VI kit, but it's for the older Gen V and Mark IV blocks. Capable of putting out over 550 horsepower, it's no slouch. This Holley SysteMAX kit will definitely give a new shot of adrenaline to the "older" Chevy big blocks. Additional parts recommendations: Lunati roller rocker arms, P/N 84174; Lunati push rod guide plates, P/N 86454; Lunati roller rocker arm lock nuts, P/N 84716; Lunati 7/16" rocker arm studs, P/N 86002; Holley 850 CFM carburetor, P/N 0-80531 or 0-4781S.
Kit Contents
Lunati hydraulic flat tappet camshaft, P/N 30208LK
Weiand dual plane aluminum intake manifold, P/N 8018
Friction free double-roller timing set
Hardened push rods, P/N 301-43
Fully assembled Holley rectangular port aluminum cylinder heads, P/N 300-560
ARP® cylinder head bolts, P/N 301-38
Assembly lube
Camshaft Specifications P/N 30208
Intake valve gross lift/duration: .540"/275°
Exhaust valve gross lift/duration: .550"/285°
Intake valve duration: @ .050"225°
Exhaust valve duration: @ .050" 235°
Rocker arm ratio:1.7
Intake valve lobe centerline:108°
Lobe separation:110°
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Chevrolet Big Block V-8Gen VI
HLY-300-510 $3000
Comments/Recommendations
This particular Holley SysteMAX kit is only for the Chevrolet Gen VI big block engines equipped with the factory hydraulic roller camshaft. It pushes horsepower and torque numbers over the edge. Following the successful "systems approach" that was established with earlier SysteMAX engine kits, Holley unleashes this very potent street package that is chock full of HolleyÕs best performance goodies and is not meant for the faint of heart. Additional parts recommendations: Lunati roller rocker arms, P/N 84174; Lunati push rod guide plates,P/N 86454; Lunati roller rocker arm lock nuts, P/N 84716; Lunati 7/16" rocker arm studs, P/N 86002; Holley 850 CFM carburetor, P/N 0-80531 or 0-4781S.
Kit Contents
Lunati hydraulic roller camshaft, P/N 54868
Weiand dual plane aluminum intake manifold, P/N 8018
Timing set
Hardened push rods, P/N 301-39
Fully assembled Holley rectangular port aluminum cylinder heads, P/N 300-560
ARP® cylinder head bolts, P/N 301-38
Assembly lube
Camshaft Specifications
Intake valve gross lift/duration: .575"/293°
Exhaust valve gross lift/duration: .575"/303°
Intake valve duration @ .050": 234°
Exhaust valve duration @ .050": 244°
Rocker arm ratio: 1.7
Intake valve lobe centerline: 112°
Lobe separation: 114°
