Engine Blocks

DART LS Next Cast Iron Blocks Darts LS Next Iron Blocks are designed from a clean slate approach that addresses shortcomings of the factory engines. These blocks are great for hot rodders, drag racers, circle track, off-road and hi-performance marine...

RHS LS 9.240" Standard Deck 4.120" Bore Aluminum Race Block 54903U Block Specifications Designed from heavy-duty A357-T6 aluminum material 3.895”-4.165” siamese cast bore walls w/ press-in spun cast iron liner Available in...

Chevrolet Performance LSX 9.240" Deck Iron Bare Block 19417352 - 4.065" Bore Features: CNC Machined Cast Iron Block Siamese Cylinder Bores 6-Bolt Billet Main Caps 9.240" Deck Height 4.065" Finished Bore Max Horsepower 1500+  Note:...

DART LS Next Aluminum Blocks Darts LS Next Aluminum Blocks are designed from a clean slate approach that addresses shortcomings of the factory engines. These blocks are great for hot rodders, drag racers, circle track, off-road and hi-performance marine...

DART LS Next Cast Iron Blocks Darts LS Next Iron Blocks are designed from a clean slate approach that addresses shortcomings of the factory engines. These blocks are great for hot rodders, drag racers, circle track, off-road and hi-performance marine...

DART LS NEXT² Cast Iron Blocks The ultimate upgrade for adding strength in the Aluminum or Iron LS Next platform is the LS NEXT² upgrade. This offers larger Billet Steel main caps using Ford (2.750″) or LS (2.560″) mains,...

RHS LS 9.750" Tall Deck 4.120" Bore Aluminum Race Block 54901U Block Specifications Designed from heavy-duty A357-T6 aluminum material 4.125”-4.165” siamese cast bore walls w/ press-in spun cast iron liner Available in...

"Engine Builder Special" Chevrolet Performance Gen V LT1/LT4/L86 Aluminum Bare Block 12619168 Features: GEN V LT1/LT4 Aluminum Block with Iron Sleeves 6-Bolt Main Caps 9.240" Deck Height 4.065" Finished Bore  

Chevrolet Performance LSX 9.720" Deck Iron Bare Block 19417354 - 3.880" Bore Features: CNC Machined Cast Iron Block Wet or Dry Sump Capability Siamese Cylinder Bores 6-Bolt Main Caps Tall Deck 9.720" Semi-Finished Deck Height 3.880"...

DART LS Next Aluminum Blocks Darts LS Next Aluminum Blocks are designed from a clean slate approach that addresses shortcomings of the factory engines. These blocks are great for hot rodders, drag racers, circle track, off-road and hi-performance marine...

DART LS Next Aluminum Blocks Darts LS Next Aluminum Blocks are designed from a clean slate approach that addresses shortcomings of the factory engines. These blocks are great for hot rodders, drag racers, circle track, off-road and hi-performance marine...

DART LS Next Aluminum Blocks Darts LS Next Aluminum Blocks are designed from a clean slate approach that addresses shortcomings of the factory engines. These blocks are great for hot rodders, drag racers, circle track, off-road and hi-performance marine...