CAD Files & Resources
Downloadable technical drawings and templates for LL8 fabrication work.
Important Note
Verify Before Use: These files are community-contributed. Always verify dimensions before fabrication.
Test Fit: Print templates at 100% scale and test fit before cutting/machining.
Material: Check material thickness requirements in file notes.
Engine Block Dimensions
Complete block measurements including mounting points, oil pan rail, bellhousing pattern.
Use: Engine mount fabrication, clearance planning
DWG DXF PDFBellhousing Adapter Plate
Adapter pattern for LL8 to SBC/LS/BOP transmissions. Includes dowel pin locations.
Thickness: 0.5"-0.75" aluminum recommended
DXFEngine Mount Templates
Block-side mount locations and suggested bracket designs.
Use: Custom mount fabrication
PDF DXFOil Pan Flange
Oil pan mounting surface dimensions and bolt pattern.
Use: Custom oil pan fabrication
DXFAccessory Bracket Dimensions
Alternator, power steering, A/C mounting points.
Use: Custom accessory relocations
PDFExternal Resources
Atlas Industries: CAD files and technical drawings on their website
Original Wiki: Additional CAD resources at Vortec4200wiki