Overview Simplify engine building and save time with pre-engineered, dyno tested short block combinations from Dart’s SHP (Special High Performance) group. These quality component packages are designed to allow the user to build more powerful and durable engines at a very affordable cost.
Compression Ratios: 10.5:1 with 72cc chamber heads and flat top pistons. 11.4:1 with 64cc chamber heads and flat top pistons. 9.25:1 with 72cc chamber heads and 20cc dish pistons. 10.0:1 with 64cc chamber heads and 20cc dish pistons.
Features:
Built on Dart's powerful SHP block for excellent reliability.
4.125" bore and 3.750" stroke.
Internally balanced rotating assembly.
Plate honed cylinder bores.
Cast steel crankshaft.
Forged 4340 I-Beam Rods w/ 3/8“ Cap Screws.
Hypereutectic Flat Top Pistons w/ Full Floating Pin.
