Dart's 427 cubic inch Chevy short block package has been rigorously tested and carefully designed and assembled by the same builders that build Dart's high performance racing engines.

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 4.000" stroke.

- Internally balanced rotating assembly.

- Plate honed cylinder bores.

- Forged 4340 steel crankshaft.

- Forged 4340 H-beam rods with 7/16" cap screws.

- Forged flat top pistons with full floating pin. 20cc dish piston option also available for inline cylinder heads. For engines using canted valve heads please call for options and pricing.

- Hastings Moly rings.

- Clevite bearings.

- Coated cam bearings for added durability.