• Engine Blocks
  • Big Blocks
    • Donovan Big Block Info
      • RC 600 Raised Cam Big Block
      • D500 Big Block
  • Small Blocks
    • Donovan Small Block Info
      • HC 410 Blocks
      • HC 400 Blocks
      • 350/400 Blocks
  • Hemi & Model D
    • 417 Hemi Aluminum Blocks
    • Model D Block
• Donovan Gear Drives
  • Degree In Your Cam with Donovan Gear Drives
  • Donovan Big Block Gear Drive
  • Donovan Small Block Gear Drive
  • Donovan 426/417/392 Hemi Gear Drives
• Donovan History
• Torque Specs
• Accessories
• Contact Donovan

[vc_row layout=”normal” margintop=”0″ marginbottom=”0″ paddingtop=”30″ paddingbottom=”30″ bg_color=”” border_width=”0″ border_color=”#e8e8e8″ bg_image=”” bg_attachment=”scroll” bg_repeat=”repeat” bg_stretch=”false” bg_parallax=”false” bg_patterns=”” video_bg=”false” video_quality=”default” vid_opacity=”70″ video_overlay_col=”” video_overlay_opac=”70″ video_overlay=”” row_font_color=””][vc_column width=”1/2″][vc_single_image image=”22″ img_link_large=”yes” img_link_target=”_self” css_animation=”appear” img_size=”medium” alignment=”center”][/vc_column][vc_column width=”1/2″][vc_column_text]Donovan Engineering has been making aluminum racing engine blocks for over 40 years. For leading race engine builders who win by design, Donovan gives you the finest materials and latest engineering.

Each Donovan block is cast from strontium-modified B356 alloy with special heat treat.   Four- and five-axis machining centers assure the tightest tolerances and latest machined surfaces.[/vc_column_text][/vc_column][/vc_row][vc_row layout=”normal” margintop=”0″ marginbottom=”0″ paddingtop=”30″ paddingbottom=”30″ bg_color=”” border_width=”0″ border_color=”#e8e8e8″ bg_image=”” bg_attachment=”scroll” bg_repeat=”repeat” bg_stretch=”false” bg_parallax=”false” bg_patterns=”” video_bg=”false” video_quality=”default” vid_opacity=”70″ video_overlay_col=”” video_overlay_opac=”70″ video_overlay=”” row_font_color=””][vc_column width=”1/1″]

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Choice of Castings:

• Full-Water
• Half-Water
• Solid

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Donovan Engineering Main Caps

• Main Caps – Ductile Iron 4-Bolt
• Fastener Grade 16 studs, nuts, washers
• Angle studs with hex heads for easy removal

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Donovan Engineering Cylinder Sleeves:

• Ductile Iron Centri
• Removable and Replaceable
• Dry Sleeve is surrounded by cast aluminum
• All bore sizes undersize for finish hone by builder
• Recommend finish decking by builder

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Donovan Engines Head Stud Kit

Each block comes with:

• Grade 16 studs
• Studs manufactured in-house
• 12-point nuts
• Heat treated and ground washers

Donovan Engines Small Parts Kit

• Water core plugs with O-rings
• Head dowels
• Bellhousing dowels
• Bronze cam thrust shim

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