421 Small Block Chevy Small Block Options:Rod I beam Std option - H beam Mesa Balancing Racing Engines uses

Mesa Balancing Racing Engines uses only Dart Merlin or Brodix or GM bowtie new blocks to build these high HP packages which on pump gas can make 600 + depending on the cylinder heads and components used and well over 1000 with blower turbo or NO2

Cam bearings installed and test cam fitted to ensure smooth rotation

a We can build these with a variety of pistons to obtain the compression ratio of your choice

machining specs

Displacement: 377" Bore: 4

421 Small Block Chevy Small Block Options:Rod I beam Std option - H beam Mesa Balancing Racing Engines usesMesa Balancing Racing Engines uses only Dart Merlin or Brodix or GM bowtie new blocks to build these high HP packages which on pump gas can make 600 + depending on the cylinder heads and components used and well over 1000 with blower turbo or NO2. These new blocks are put through the same machining process as all our engines (we do not use new blocks without machining them like most of our competitors ) all blocks are inspected for cracks and flaws