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Chev SB 8mm Lightweight Valvetrain Conversion
Everything you need to assemble your own high performance heads.
Designed for better valve control and increased valve train stability. These lightweight conversions start with smaller 8mm valve stem. They feature inverted conical valve springs and small 1.055" diameter retainers for even more weight savings. Because of this reduction in weight you can use less spring pressure to handle more rpm and more aggressive cam profiles. Valves and valve locks are bead lock design for better clamping force. Perfect for occasional use at the strip, but durable for the street. Great for hydraulic/mechanical flat tappet or hydraulic roller cam applications.
Part Type: Head Improvement Kit
Application: Chevrolet Small Block 8mm Conversion
Intake Valves Included: Yes, 8
Intake Valve Type: Competition Products Severe Application Valves
Intake Valve Size: 2.055", 8mm Stem (+.100")
Intake Valve Material: Stainless Steel, Chrome Stem/Hardened Tip
Exhaust Valves Included: Yes, 8
Exhaust Valve Type: Competition Products Severe Application Valves
Exhaust Valve Size: 1.600", 8mm Stem (+.100")
Exhaust Valve Material: Stainless Steel, Chrome Stem/Hardened Tip
Valve Springs Included: Yes, 16
Valve Spring Type: Howards Cams Beehive Hydraulic/Mechanical Flat Tappet/Hydraulic Roller
Valve Spring Size: 1.280" O.D.
Valve Spring Pressure: Closed: 108 @ 1.800", Open: 345 @ 1.225", 1.150" Coil Bind
Valve Spring Max Lift: .600"
Retainers Included: Yes, 16
Retainer Size: 8mm
Retainer Material: Chrome Moly Steel
Valve Locks Included: Yes, 32
Valve Lock Size: 8mm Bead Lock
Valve Lock Material: Forged Steel
Valve Seals Included: No
Valve Seal Type: NA
Valve Seal Size: NA
Manufacturer: Competition Products
Manufacturer's Part Number: 851056
Weight:
Warranty: Per Item Manufacturer
Quantity: Sold as Kit
Note: Must shim valve springs to correct height.
Note: Conversion requires use of either 8mm valve guide liners or 8mm valve guides.
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