Core based oil pans are based off the same oil pan that came from the factory and are made of a drawn steel stamping. Moroso has taken the time and engineering to produce the best cores to fit the most applications available. In many cases, OEM cores that came in many cars and trucks are often a “typical” core that fit a variety of vehicle and engine combinations. But some manufactures had “special” core combinations that are rare and have certain irregularities that are not common. It is the responsibility of the end user to be aware of these applications and understand that all aspects of the oil pan may not be OEM compatible on the engine or in the vehicle. Moroso Performance core based oil pans are designed for both OEM and aftermarket blocks and engine combinations. This fact makes the addition of stroker notches, larger sumps, and power kick-outs a necessary design aspect. Certain oil pans will have OEM located bolt holes omitted to accommodate stroker notches. This has been intentionally designed this way, and with proper attention to sealing the area, will work in any application. These features will make the assembly of the oil pan more complex than OEM replacements. Core based oil pans are also subject to a certain amount of warping from the welding of fabricated components to a steel core. Core based pans often have tighter clearances to splayed main caps, rotating assemblies, and billet aluminum wet sump oil pumps. Mock-up fitments are more critical in these situations. Once a core based oil pan is fastened to the engine in its final assembly, knowing the oil pump clearance, and rotating assembly clearance will ensure ideal performance and longevity for your Moroso Oil Pan.
  • Wet Sump
  • 168/153-tooth flywheel combos
  • Steel
  • 7 qt. Capacity
  • 7.75 Deep
  • Chevy Big Block Mark IV style (NOT Gen V/VI)
  • Core based
  • Stock rail bolt pattern
  • Up to a 4.50 stroke (steel rods) & a 4.25 stroke (aluminum rods)
  • Louvered tray

Additional Information:

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JB's Power Centre offers on-site professional installation services in Calgary and Edmonton, AB.
We have on staff licensed Mechanical Technicians as well as MECP Certified 12-Volt Technicians.

* Extend your products Manufacturer Warranty

All products include a manufacturer warranty, but you can extend this warranty with
JB's Purchase Protection Plan
*Available on select products.