BluePrint BP3505CTFK 350 Crate Engine Longblock, Injection, Black

Black-finished and fuel-injected, the BP3505CTFK pairs BluePrint's EFI system with a front accessory drive bundling a water pump, an alternator, an A/C compressor, and power steering into its own self-contained unit, while holding the family rating of 390 hp and 410 lb-ft of torque on tap.

One fitment note

This accessory-drive package shares the same Corvette exclusion as its carbureted counterpart, so check your application before ordering. For most other swaps, this is the most complete EFI package in the lineup, needing the fewest extra parts to finish the install.

Inside the long block

A four-bolt main and a one-piece rear seal sit on a new USA-machined cast iron block, 4.000 inches of bore and 3.480 inches of stroke. Forged 5.700-inch rods and BluePrint's aluminum heads bring the compression to 9.2:1, timed to 32 degrees at 3,500 rpm. The long block carries BluePrint's 30 month, 50,000 mile coverage.

Q: What finish are the valve covers and air cleaner? This build uses a black-finished dress rather than the natural or polished finishes found elsewhere in the lineup.

Few other listings in BluePrint's fuel-injected 350 lineup leave as little outstanding to buy, since the EFI hardware and the accessory-drive parts are both already accounted for before the crate ever ships out the door.