Xtreme Marine 218/224 Hydraulic Roller Cam for Chevrolet Small Block

Available Soon
SKU
12-417-8
Available Soon items may take 2-4 weeks for delivery.
$350.95
  • For Retro-Fit (Link Bar) Hydraulic Roller Lifters; Fits '58-'021 262-400 cid Chevy Small Blocks2

  • Largest for inboard/outboard • Good mid-range w/ excellent response • Noticeable idle

  • Xtreme Marine™ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum and enhances throttle response. Special intake closing ramps close the valve sooner, providing more cylinder pressure and torque without resulting in excessive valve train noise. Faster ramps achieve maximum velocity sooner, increasing the area under the lift curve and providing maximum horsepower. Smoother exhaust designs allow for a more effective purge of spent gasses from the combustion chamber to further increase horsepower. Feature CRC (Constant Radius of Curvature) technology that ensures durability with aggressive hydraulic roller designs.


1: Cams for '55-'57 engines can be custom ordered. Please Call, Email, Twitter or Live Chat for details.

2: The '87+ Chevy Small Block received provisions for roller lifters. Most '87 - '93 GM cars came with roller lifters, but most '87 - '95 trucks came with flat tappet lifters in roller lifter style blocks. If your block has '87+ OEM-style roller cam provisions but does not have roller components fitted, COMP Hyd. Roller Lifter Install Kit for '87-'90 Blocks or '91-'02 Blocks can be purchased. As well as a '87+ OE-Style COMP Hyd. Roller Cam and '87+ OE-Style COMP Roller Lifters. Pre-'87 blocks require Retro-Fit Link Bar Roller Lifters.

Camshaft Material:
Valve Springs Required:
Assembly Lubricant Included:
Engine Family: Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
RPM Operating Range: 1,500-5,500
Grind Number: XM270HR
Cam Type: Hydraulic Roller
Lifter Style: Hydraulic Roller
Camshaft Series: Xtreme Marine
Usage: Marine
California Proposition 65: WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Advertised Intake Duration: 270
Advertised Exhaust Duration: 276
Intake Duration at .050 Inch Lift: 218
Exhaust Duration at .050 Inch Lift: 224
Intake Valve Lift: 0.495
Exhaust Valve Lift: 0.503
Lobe Separation: 112
Exhaust Close ATDC: 24
Intake Open BTDC: 25
Exhaust Open BBDC: 72
Intake Close ABDC: 65
Camshaft Gear Attachment: 3-Bolt
Note Description
1010
4646
Component Part Number
Break-In Lube: 159
CL-Kit Upgrade: CL12-417-8
Distributor Gears: 12200
K-Kit Upgrade: K12-417-8
Lifter Kit: 15853-16  /   853-16
Push Rods: 7809-16
Rocker Arms: 1412-16
SK-Kit Upgrade: SK12-417-8
Steel Retainers: 740-16  /   795-16
Timing Set: 2100  /   7100
Valve Locks: 611-16  /   614-16
Valve Seals: 503-16
Valve Springs: 986-16  /   26986-16