6.5L GEP Optimizer Engine Block

Genuine GEP 6.5L Optimizer bare engine block.  Same as used in the production of new Optimizer 6500 engines.

This block is compatible with all 6.5L configurations whether they be naturally aspirated, supercharged, side mount turbo or center mount turbo.  Depending what cylinder heads you put on it.

Our inventory is the latest 2024 casting.

This is a BARE block that includes:

• Machined engine block
• Matching main caps
• Main cap bolts
• Cam Bearings are installed
• Freeze plugs are installed - except for the one that accepts the block heater

It does NOT include:

• Piston oiler nozzles
• Oil gallery plugs
• Main bearings
• Any internals or accessories