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Clay Smith Hydraulic Cam / Lifter Kit, 296/300 Big Block Chevy 496
Clay Smith Hydraulic Cam / Lifter Kit, 296/300 Big Block Chevy 496

Clay Smith Hydraulic Cam / Lifter Kit, 296/300 Big Block Chevy 496

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Clay Smith Hydraulic Cam / Lifter Kit, 296/300 Big Block Chevy 496
Clay Smith Hydraulic Cam / Lifter Kit, 296/300 Big Block Chevy 496
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Part # 1603105
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What's In The Kit

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Camshaft Type:
Hydraulic Roller Tappet
Intake Duration:
Exhaust Duration:
Lobe Separation:
107 °
Intake Duration @ .050" Lift:
Exhaust Duration @ .050" Lift:
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These camshaft / lifter kits are perfect for use with BBC 477 to 496 with 4.25" stroke with Air Flow Research 290 or 305 heads to a max of 6000 rpm. Welcome to the brotherhood of 625HP on pump gas with over 640#/ft. This cam will produce over 600HP with a single plane and right at 600HP with an air-gap intake. Single plane will make 25 more HP and sacrifice 10#/ft. of torque. Carb of choice is a 950HP 4150. 2" headers are recommended. Be sure you have changed U-joints and upgraded rear gears. Muncie 4 speed, use at your own risk. Ok with power brakes. 900 RPM Idle.

  • Adv. - 296 / 300
  • .050" - 237 / 241
  • .200" - 154 / 151
  • Lift - .617 / .570
  • Centerlines - 103 / 111
  • Lobe Sep. - 107
  • Includes a set of tie-bar style hydraulic roller lifters
Some parts are not legal for use in California or other states with similar laws/regulations

What's In The Kit

Each kit from Speedway Motors is carefully packaged and delivered right to your door. Below is a list of all the items you should expect to receive when you order this kit. Some of these items may also be available for sale individually if you're here looking for replacement parts.
  • Clay Smith 296/300 Cam
    Qty x 1
  • Clay Smith Cams Big Block Chevy Street Series Hydraulic Roller Lifters
    Qty x 1

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Q & A


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  • Learn the basics to engine performance like; how does a cam work? What is Valve lift, duration, lobe separation angle, and cam profiles? Afterwords selecting the right camshaft will be less of a guessing game!
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  • The art of selecting a camshaft that performs right in your street rod may become easier with experience, but the choice is less of a guessing game once you have a few of the basics, found in this latest article from Speedway.
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  • Zach bent an exhaust valve and needed pull the top off of the engine to replace the valve and gaskets. There are several reasons why you would need to pull the top off of your engine, but Zach's step by step process universal.
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