Donovan Engineering has been making aluminum racing engine blocks for over 30 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. A 2001 horizontal machining center assures the tightest tolerances and latest machined surfaces.
All blocks share these features:
Choice of Castings:
- Full-Water
- Half-Water
- Solid
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
Donovan Engineering Head Stud Kit
Each block comes with:
- Grade 16 studs
- Studs manufactured in-house
- 12-point nuts
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Heat treated and ground washers
Donovan Engineering Small Parts Kit
Each block comes with:
- Water core plugs with O-rings
- Head dowels
- Bellhousing dowels
- Bronze cam thrust shim
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