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ProMaxx Performance Shocker CNC Ported Chev BB Aluminum Heads
These heads feature professionally designed fully CNC ported runners and chambers. These heads have shown to outflow competitors heads that were 15cc larger. It's time to make your Chevy big block the baddest on the block at a price no one in the industry can touch. Built, designed, and ported in the USA. MAXX quality and performance at minimum pricing.
Shocker 340 CNC Ported Flowing over 415cfm with a 2.300" valve, this head is a powerhouse that flows in the mid-range as well as up top.
Assemblies include: 2.300"/1.880" stainless steel valves, HP valve springs, (triple 1.600" mechanical roller up to .900" lift), 7/16" screw-in studs, and guide plates.
Part Type: Cylinder Head
Application: Chevrolet Big Block
Cylinder Head Material: Aluminum
Bare or Assembled: Assembled
Combustion Chamber Size: 121cc
CNC Machined Combustion Chambers: Yes
Intake Valve Angle: 26
Exhaust Valve Angle: 26
Intake Port Volume: 340cc
CNC Machined Intake Port: Yes
Intake Port Flow: 415cfm
Intake Port Location: Standard
Intake Port Shape: Rectangular
Intake Port Dimensions:
Suggested Intake Gaskets:
Exhaust Port Volume:
CNC Machined Exhaust Port: Yes
Exhaust Port Flow:
Exhaust Port Location: Standard
Exhaust Port Shape: D-shaped
Exhaust Port Dimensions:
Suggested Exhaust Gaskets:
Spark Plug Style:
Suggested Spark Plug:
Valve Guides: Yes
Valve Guide Spacing:
Valve Stem Diameter:
Valve Seats: Yes
Valve Job:
Intake Valve Diameter: 2.300"
Intake Valve Included: Yes
Exhaust Valve Diameter: 1.880"
Exhaust Valve Included: Yes
Suggested Valve Length:
Valve Spring Pockets:
Valve Springs Included: Yes, 1.600" Triple
Valve Spring Application: Mechanical Roller, .900" max lift
Valve Springs Retainers Included: Yes, titanium
Valve Locks Included: Yes
Valve Seals Included: Yes
Rocker Studs Included: Yes
Guide Plates Included: Yes
Valve Cover Mounting Style: Perimeter bolt
Steam Holes Drilled: No
Heat Crossover: No
Suggested Head Bolts:
Suggested Head Studs:
Suggested Stud Girdle:
Head Bolt Torque with Oil:
Rocker Stud Torque with Oil:
Intake Bolt Torque with Oil:
Manufacturer: ProMaxx Performance
Manufacturer's Part Number: 9343
Weight:
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Pair
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