Howards Cams/Morel Street Series Retrofit Hyd Roller Lifters

Our Howards Cams Street Series Retrofit Hydraulic roller lifters are 100% USA Made in Cleveland, Ohio by MOREL. Morel started making lifters over 55 years ago for Eaton, and they now operate out of a 100,000 square foot manufacturing plant in Cleveland with over 100 pieces of manufacturing machinery, and they do all their own heat treating in-house, allowing them to maintain full metalurgical control. Sales and engineering for Morel is now handled by John Callies (of Callies Crankshaft fame.) They have grown to become an OEM lifter manufacturer for many other well known brand names such as Howards, Trick Flow, Erson, Lunati, etc. These high performance street lifters are designed primarily for ease of maintenance and reliability. They "drop into" a stock block with no machine work or oil system mods required, and work with all the steel billet hydraulic roller cams we sell, regardless of brand. The lifters have the bodies shaped with cold form technology, then Carbonitrided and tempered for proper hardness and maximum durability. They are then CNC-machined and fitted with precision check ball internal valving to prevent lifter "pump up." The roller wheel is hardened and tempered steel alloy, and the cross bars are made from heat treated stainless. These features combine to provide a broader power band and increased rpm potential, while still offering the low maintenance of a hydraulic cam. These are designed for street performance enthusiasts who want to upgrade to a hydraulic roller camshaft. These retrofit hydraulic roller lifters are specifically designed for street applications up to 6,500 rpm. Roller diameter is .700", and seat height is 2.661"Howards part number 91767.