Donovan 417 Hemi Aluminum Blocks

Donovan’s Historic 417 aluminum engine block is now available in Billet and Original Casting.

Std 417 Hemi,
NEW Billet 417 Hemi

With over 5 MILLION lines of code, Donovan Engineering is proud to announce the Billet 417 Hemi.

This block blends decades of manufacturing experience with Mastercam’s CAD/CAM technology.

The result is the Ultimate 417 Hemi aluminum engine block.

Be sure to watch this Block’s Video !

For racers who want the original 417 Donovan cast block, Donovan Engineering provides these original 417 cast hipped solid aluminum blocks.

Click for larger images.

Donovan Engineering’s “Woody” talks about their new bottom-end design that combats Top Fuel’s most common failure: thrown rods. Close ups show a clever, modular girdle that cuts downtime between runs, and drop-in sleeves continue to offer ultra-quick repairs for cylinder bore failures.

The insider’s “cement trick” is discussed with Bob Santoro, and main-cap hard anodizing brings to light how dissimilar materials can be used successfully in this high-stress environment.

Ever popular in Vintage Drag Racing circles today, this 160-lb block continues to set records and dominate the scene across the nation at these events.

With this new upgrade, the venerable 417 Legend lives on, and is available now at

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