Dart Pulls the Wraps off of New SHP 400 Block

Dart 400 BlockDart Machinery has introduced a new SHP 400 engine block. An aftermarket replacement for the Chevrolet small-block, the SHP 400 is a high performance cast iron block, featuring the larger diameter (2.65in) 400-style main journals.

Developed for hot rodders, oval track and drag racers, off-roaders and high-performance marine enthusiasts, the SHP is created as an affordable high-performance block. Priced hundreds of dollars less than a full-race block, it eliminates the time and expense and all doubts associated with rebuilding a junkyard core.

Tailored to the most popular performance and racing applications, the SHP range (special high performance) now offers the options of 350 (2.45in) or 400 main journals and 4.000in or 4.125in cylinder bores.

Moreover, Dart’s new SHP 400 features Siamese cylinders with 0.230in minimum wall thickness at 4.165in bore diameter. Further key features include a true priority-mains oiling system that ensures reliable lubrication at high rpm and ductile iron main caps with a splayed four-bolt arrangement on the three center mains. Beyond this the SHP is endowed with 0.625in thick decks with blind head bolt holes and clearance for long-stroke crankshafts.

Manufactured in Dart’s in-house CNC machining centers to precise tolerances, the SHP 400 is compatible with stock components, including OEM-style hydraulic roller lifters and camshafts, steel and plastic timing chain covers, side and front motor mounts, clutch linkage pivots, and mechanical fuel pumps.

Here’s more on the key features Dart provided us.

  • 2.65in 400-style main journals
  • 4.000in or 4.125in cylinder bores
  • Siamese cylinders with 0.230in minimum wall thickness at 4.165in bores
  • 0.625in thick decks with blind head bolt holes
  • True priority-mains oiling system ensures reliable lubrication at high rpm
  • Compatible with stock components
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