The Power Adder SBC Short Block comes standard with many features designed to handle high horsepower levels (Turbo, Blower, Nitrous)The Dual 3/16" Keyway option is highly recommended for supercharger applications. The ATI Blower Balancer has both the 3 bolt SBC pattern and the standard 2.80" Chrysler Blower Bolt Pattern & extra thick BBC Hub.  The ATI Balancer requires a matching ATI Timing Cover which accepts a BBC timing cover seal to match the Balancer's larger hub.Compression Ratio ca...

The Smeding 427" LS Short Block is offered in three different configurations! Each package is meticulously assembled with the highest attention to detail and precision. Bearing clearance & ring gaps are measured, verified and set for each application's unique demands. Two different piston volumes are available, please select a horsepower rating and then the volume option will appear. We can also assist with selecting the correct camshaft for your build and goals! Call 210-446-0960 for mor...

The Smeding 427" LS Long Block is offered in three different configurations! Each package is meticulously assembled with the highest attention to detail and precision. Bearing clearance & ring gaps are measured, verified and set for each application's unique demands. Two different piston volumes are available, please select a horsepower rating and then the volume option will appear. We can also assist with selecting the correct camshaft for your build and goals! Call 210-446-0960 for more...

The Power Adder SBC Short Block comes standard with many features designed to handle high horsepower levels (Turbo, Blower, Nitrous)The Dual 3/16" Keyway option is highly recommended for supercharger applications.The ATI Blower Balancer has both the 3 bolt SBC pattern and the standard 2.80" Chrysler Blower Bolt Pattern & extra thick BBC Hub. The ATI Balancer requires a matching ATI Timing Cover which accepts a BBC timing cover seal to match the Balancer's larger hub. 383" Specs:Block: Sme...

The Smeding 427" LS7 Short Block is offered in two different configurations! Each package is meticulously assembled with the highest attention to detail and precision. Bearing clearance & ring gaps are measured, verified and set for each application's unique demands. Two different piston volumes are available, please select a horsepower rating and then the volume option will appear. We can also assist with selecting the correct camshaft for your build and goals! Call 210-446-0960 for more...

This Smeding 427" Aluminum LS7 Short Block is designed to replace an OEM dry sump LS Short Block. This engine is meticulously assembled with the highest attention to detail and precision. Bearing clearance & ring gaps are measured, verified and set for each application's demands. This short block has a horsepower rating of 1,700hp. We can also assist with selecting the correct camshaft & cylinder heads for your build and goals! Call 210-446-0960 for more information. 1700hp Rated:Bloc...