Let’s say you have a nice set of big-block heads laying around that came off of a drag car, but no
short-block to bolt them to. Shafiroff Race Engines figured there must be tons of hot rodders in this
exact predicament, so it went ahead and designed an all-new budget 540 short-block. At just $4,495,
it would be awfully tough to replicate this combo for less money. That’s because it’s packed with all
the right stuff, including a Dart Big M block, a forged Eagle crank and rods, and JE 13:1 forged pistons.
If that’s too much squish for you, Shafiroff can outfit the 540 with a more street-friendly compression
ratios. An oil pan, timing set, camshaft, balancer, oil pump, and gaskets are available as options
| Specifications |
| Cubes: | 540 |
| Bore/Stroke: | 4.500x4.250 inches |
| Output: | N/A |
| Block: | Dart Big M |
| Crank: | Forged 4340 steel
|
| Rods: | Forged H-beam |
| Pistons: | Forged JE 13.0:1 |
| Cylinder Heads: | N/A |
| Intake: | N/A |
| Warranty: | N/A |
| Price: | $4,495 |
Part of the appeal of an LS-series small-block is the cutting-edge technology that they offer. Mast Motorsports has ratcheted the technology factor way up with its 570 hp L99 small-block. As if an engine boasting an aluminum LS3 block and EFI wasn’t high-tech enough, the Mast L99 adds variable valve timing to the mix. This allows both fattening up the torque curve down low, and bumping up high-rpm horsepower. It’s literally the best of both worlds. For the ultimate in durability, the 416 utilizes a forged Compstar rotating assembly. The Mast L99 ships complete with a custom-tuned Mast stand-alone engine management system and harness, a drive-by-wire gas pedal, a starter, an oil pan, a balancer, and a water pump. All you have to do is hook up a couple of wires, connect the fuel lines, and turn the key.
| Specifications |
| Cubes: |
416 |
| Bore/Stroke: |
4.070x4.000 inches |
| Output: |
570 hp and 540 lb-ft |
| Block: |
GM LS3 aluminum |
| Crank: |
Compstar forged 4340 steel |
| Rods: |
Compstar 6.125-inch steel |
| Pistons: |
Mahle 11.2:1 forged aluminum |
| Cylinder Heads: |
GM rectangular-port aluminum |
| Intake: |
GM LS3 |
| Warranty: |
18 months, unlimited miles |
| Price: |
$13,995 |
Speedway Motors has teamed up with BluePrint engines to create a custom line of crate motors. One of the company’s most popular combinations is its 420hp 383. At a dollar-stretching price of $3,499, it’s easy to see why. The motor is based on a four-bolt GM block, and is fitted with a cast-steel stroker crank, powdered metal rods, and 10.0:1 hypereutectic pistons. The top end consists of aluminum 195cc heads, and a dual-plane intake manifold. Managing the valve events is a 229/230-at-0.050 hydraulic flat-tappet cam. An oil pan, harmonic balancer, timing cover, flexplate, and distributor are included as well. All you have to add is a carb and a water pump.
| Specifications |
| Cubes: |
383 |
| Bore/Stroke: |
4.030x3.750 inches |
| Output: |
420 hp and 450 lb-ft |
| Block: |
Factory GM iron |
| Crank: |
Cast steel |
| Rods: |
GM 5.700-inch powdered metal |
| Pistons: |
Hypereutectic 10.0:1 |
| Cylinder Heads: |
Aluminum 195cc castings |
| Intake: |
Aluminum dual-plane |
| Warranty: |
30 months, 50,000 miles |
| Price: |
$3,499 |