BTR ASSEMBLED DART BASED SHORT BLOCK

BTR is proud to announce our latest LSx offering. Starting with a new Dart SHP Pro iron block, the blocks are CNC finished machined in our state of the art, In-House machine shop by our talented machinists. All critical engine tolerances are checked and documented before final assembly in one of our dedicated engine clean rooms to our precision specifications. Once this process is finished, these short blocks are assembled utilizing proven, quality rotating assembly components that are balanced before final assembly. If you decide to own one of these, be warned as they are expected to produce high horsepower pass after pass on your way to Victory Lane! 

****Please reach out to our experienced Sales team for help with any and all questions or advice on parts to complete your short block. ****

- These short blocks are rated for up to 1,500HP
- See downloads for instructions and warranty info.

Components included:

- Dart SHP Pro 4.125" Bore Iron Engine Block, part number 31867212

- Dart Billet CCW 4.000" Stroke Crankshaft, part number 9-34640006125-8

OR Callies Compstar CCW 4.000" Stroke Crankshaft, part number APO31Q-CS-58 for 427s

- Callies Compstar CCW 3.625" Stroke Crankshaft, part number APH31Q-CS-58 for 388s

- 58x Reluctor

- Oliver 4340 Forged 6.125" I-Beam Rods, part number OLI-L6125STSW8

- Diamond LS2K 4.125" Bore 3cc Flat Top Pistons for 15* Heads, part number 21518-RS-8

OR CP Bullet Series 4.125" Bore 4.6cc Flat Top Pistons for 12* Heads, part number BLSR1204-STD for 427s

- CP Bullet Series 4.125" Bore 2.7cc Flat Top Pistons, part number BLS1012-125 for 388s 

- ACL OR Clevite Rod Bearings

- Calico Coated ACL Main Bearings

- Dart Main Studs