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Valley Cover Kit


Part # 300-802
Estimated shipping date: 08/12/2022
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The Hilborn EFI-R injector manifold kits combine the technology of Electronic Fuel Injection with the racing born performance and aggressive looks of Individual-Runner engine induction. The engine valley covers are sold separate to allow the customer to choose the correct valley cover kit based on the engine deck-height, 300-802 - Std. 9.800" height or 300-803 - Tall 10.200".


  • Fits OE & aftermarket Big Block Chevy engines which have OE standard or tall block deck heights. 300-802 for standard 9.800” height, 300-803 for tall 10.200” height.
  • Hilborn high-quality heat-treated aluminum valley cover castings, ceramic coated a beautiful dark gray
  • The machined valley cover provides two AN-10 O-ring sealed ports, these ports can be used for crankcase breathers, installation of a dry sump oil scavenge pick-up, or an oil fill location
  • The Hilborn Big Block Chevy valley covers are intended for use with a set of Hilborn EFI-R injection manifolds but these valley covers could also be used as part of a custom induction system being built.
  • Ram Tubes and Lifter Valley Covers sold separately

About Hilborn

Following World War II, Stuart Hilborn designed and built the first constant flow mechanical fuel injector. Since then, Hilborn Fuel Injection has continuously revised and improved its fuel injection systems for both street and race applications.

Brand Hilborn
Product TypeIntake Manifold
Part Number300-802

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Some parts are not legal for use in California or other states with similar regulations.