BluePrint Engines B454FK700 SBC 454/563HP with 700R4, EFI, Pol.

BluePrint's 454 combo is the big-block entry in this lineup, making 563 horsepower and 545 lb-ft of torque at a 10.5:1 compression ratio through a Holley Sniper 2 EFI system. Forged pistons and a forged crankshaft back the polished front accessory drive and 700R4 automatic bolted to it.

What it is built for

This is a big-block build aimed at a street combination where the extra displacement and EFI tuning matter more than small-block packaging. A single-plane intake manifold and aluminum cylinder heads sit on the forged rotating assembly, with ignition timing set at 10 to 16 degrees initial and 32 to 34 degrees total.

What to check before ordering

The included converter on this big block stalls around 2,200-2,400 rpm, with flexplate and starter already in the box. At 563 horsepower, make sure your chassis, cooling system, and fuel supply are rated for a big block before committing to this swap. California buyers should plan for Bureau of Automotive Repairs engine-change compliance, since this part is not sold as a direct factory replacement.

Common questions

Is fuel delivery through a carburetor? No, a Holley Sniper 2 EFI system is already built into this long block.

Is a flywheel in the box? Not with this automatic 454 combo — a flexplate is what ships instead.

What finish does the accessory drive come in? Polished, the same as the rest of this 454 kit's hardware.