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Roush Yates is proud to introduce the Evolution in Power with the RY45 Series Engine Block. This is a purpose built aluminum block for racing applications recommended for dirt late model and off road truck. Cast from 357 T-6 Aluminum this block has been designed so that less machining time is required before assembly. It comes with 4 bolt steel splayed main caps and the cast in cam tunnel design allows for a 4 inch stroke crankshaft. Integrated oil supply passages for both piston and spring cooling. The cam seal and thrust bearing are housed in the cam retainer. This block has been thoroughly designed to improve oil scavenging and all block plugs are o-ring including water plugs.

 Engine comes ready to machine and includes the following:

• Block Plug Kit

• Cam Bearings (Not Installed)

• Main Studs with Washers and 12 Point Nuts

  Features:

• Material: 357 T-6 Cast Aluminum
• Style: RY45 Series
• Make: Roush Yates
• Deck Height: 9.200"
• Bore: Semi-Finished
• Bore Diameter: 4.215"
• Max. Bore Diameter: 4.250"
• Main Bearing: 2.750"
• Main Caps: 4-Bolt Splayed Billet Steel
• Cam Location: 6.150" Cam Height
• Cam Bearings: 60mm Roller Bearings - Not Installed
• Lifter Bore: Semi-Finished
• Lifter Bore Diameter: 0.905"
• Freeze Bore: Threaded and O-ring
• Rear Main Seal Design: 1 Piece
• Front Seal Design: 1 Piece

Fitment:

RY45 Series Engines Only

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