Donavan Aluminium Model-D Engine

 

Model-D All Aluminum Ford Model "A" Engine Block

• Aluminum A356-T6 Block
• Weighs 70 lbs
• Ductile Dry Liners
• 3-7/8" Bore x 4-1/4" Stroke
• 4340 Steel Billet Crankshaft
• 4340 Steel Billet Connecting Rods With 45-Degree Off-Set Parting Lines
• Five Main Bearings
• Five Cam Bearings
• Four-Bolt Mains
• Small-Block Rear Main Seal
• Small-Block Rod Bearings
• Angled Main Studs
• 30 P.S.I. Running Oil Pressure
• Extra-Large Cooling Capacity
• Double-Runner Intake Manifold
• 100 HP/124 ft.-lbs. Torque @ 2850 RPM
• Idles at 450 RPM
• Over 180 HP Potential!

5 Bolt Mains

A Finned Head is also available

Options:

• Internal Oil Pressure Relief Valve
• Stromberg Carburetor Adaptor Plate
• Dual Stromberg Intake Manifold
• Side-Port Seal-Off Plate and Valve Plugs for Easy Overhead Valve Conversions
• Aluminum 356-T6 Flathead

Snyder's

Source:   http://www.donovanengineering.com/Blocks/ModelDBlock.html