427ci Dart LS Next Iron Short Block for Boost, 1/2" Head Studs Included Piston Type:LS7 Manley valve spring locators -

Manley valve spring locators - ID:

000" stroke

Box: 24x13x9

260" semi-finished standard deck height (ready to be decked)

427ci Dart LS Next Iron Short Block for Boost, 1/2" Head Studs Included Piston Type:LS7 Manley valve spring locators -This 427ci LS iron short block is ideal for intermediate range boost. The Dart block is a big leap over a GM block as is the Callies 8 counterweight crank (details below). Add in the Callies rods, Diamond pistons, upgraded fasteners, our precision CNC machining and you've got a dependable short block that will last. Here is what you're getting: Dart LS Next SHP Block 4. 125" bore Callies' fully counterweighted (CCW) Apex crankshaft Calico coated rod