Dart LS Engine Blocks
Circle Track Dart LS Engine Blocks at JJ Motorsports
Build a high-performance GM LS-Series engine with Dart LS engine blocks from JJ Motorsports. Part of the LS Next platform, these cast iron bare blocks feature reinforced construction, 4-bolt mains, 1-piece seals, and options for bore sizes and deck heights, providing superior durability, precision oiling, and power potential for demanding IMCA, USMTS, and dirt oval racing in late models, modifieds, and street stocks.
Shop trusted brands like Dart for LS Next and SHP series blocks. Explore related categories such as Circle Track Engines Bare Blocks for foundational upgrades or Circle Track Engines and Components for complete engine parts.
Top Circle Track Dart LS Engine Blocks
- Dart LS Iron Block - 9.240/ 4.125 w/Steel Main Caps 31837211 – LS Next Bare Block with 4.125 in bore, 9.240 deck, 4-bolt mains, 1-piece seal, 0.375 in extended cylinders, iron, GM LS-Series.
- Dart LS SHP Pro Block 4.125 Bore 9.240 DH 31867212 – SHP LS Next Bare Block for high-performance, 4.125 in bore, 9.240 deck, 4-bolt, 1-piece seal, iron, GM LS-Series.
- Dart LS SHP Iron Block 9.240 Deck/4.125 Bore 31867211 – SHP LS Next Bare Block with 4.125 in bore, 9.240 deck, 4-bolt mains, iron, GM LS-Series.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Dart LS Iron Block - 9.240/ 4.125 w/Steel Main Caps 31837211
DART
$4,499.99The LS platform dominates performance builds, but factory design compromises—particularly windage loss and oil control in separated crankcase bays—leave power on the table. Dart's LS Next Iron block solves these fundamental issues with a clean-sheet...DRT31837211- SKU:
- DRT31837211
- Availability:
- Ships Same Business Day
- Weight:
- 238.00 LBS
- MFG Part #:
- 31837211
$4,499.99 -
Dart LS SHP Pro Block 4.125 Bore 9.240 DH 31867212
DART
$4,699.99If you're building a serious LS platform engine for drag racing, circle track competition, or high-performance marine duty, you need a block engineered to handle extreme cylinder pressures and sustained power. The Dart SHP LS Next PRO delivers the...DRT31867212- SKU:
- DRT31867212
- Availability:
- Ships Same Business Day
- Weight:
- 240.00 LBS
$4,699.99Qty in Cart: 0Quantity:Price:$4,699.99Subtotal: -
Dart LS SHP Iron Block 9.240 Deck/4.125 Bore 31867211
DART
$3,999.99Building a high-displacement LS engine demands a foundation that won't compromise under extreme power levels. The Dart LS SHP Iron Block delivers the structural integrity and precision bore sizing needed for forced induction, nitrous, or naturally...DRT31867211- SKU:
- DRT31867211
- Availability:
- Ships Same Business Day
- Weight:
- 212.00 LBS
- MFG Part #:
- 31867211
$3,999.99Qty in Cart: 0Quantity:Price:$3,999.99Subtotal: -
Dart LS SHP Iron Block 9.240 Deck/4.000 Bore 31867111
DART
$3,999.99The Dart LS SHP Iron Block is purpose-built for serious LS engine builders who demand reliability without compromise. Its ductile iron construction provides superior strength for high-boost applications and aggressive cylinder pressures, while the 4.000"...DRT31867111- SKU:
- DRT31867111
- Availability:
- Ships Same Business Day
- Weight:
- 185.00 LBS
- MFG Part #:
- 31867111
$3,999.99Qty in Cart: 0Quantity:Price:$3,999.99Subtotal: -
Dart LS Iron Block - 9.240/ 4.000 w/Steel Main Caps 31837111
DART
$4,499.99The LS platform dominates performance builds, but factory design compromises—poor windage control, inadequate oiling, and separated crankcase bays—leave serious power on the table. The Dart LS Next Iron Block solves these fundamental issues with a...DRT31837111- SKU:
- DRT31837111
- Availability:
- Ships Same Business Day
- Weight:
- 238.00 LBS
- MFG Part #:
- 31837111
$4,499.99Qty in Cart: 0Quantity:Price:$4,499.99Subtotal:
