Engines, Bare Blocks
Circle Track Engines Bare Blocks at JJ Motorsports
Bare engine blocks are the perfect starting point for building a custom power unit tailored to your car’s needs. Designed with durability and precision, these blocks support high-power outputs for late models, modifieds, and street stocks. Combine them with additional engine-building essentials to construct a race-ready engine with confidence.
Shop trusted brands like Chevrolet Performance for LSX cast iron blocks and Dart for SHP iron options. Explore related categories such as Circle Track Engines Blocks and Components for additional parts or Circle Track Engines and Components for complete upgrades.
Top Circle Track Engines Bare Blocks
- Chevrolet Performance Chevy Performance LSX Cast Iron Block - 4.185 Bore Finished 19417353 – LSX Bare Block, 4.185 in Bore, 9.240 Deck, 6-Bolt Main, 1-Piece Seal, 6-Bolt Head, Iron, Orange, GM LS-Series, Each. Engine for high-power outputs in late models, modifieds, and street stocks.
- Chevrolet Performance Chevy Performance LSX Cast Iron Block - Semi Finish 9.260 DH 19417351 – LSX Bowtie Bare Block, 3.880 in Bore, 9.260 Deck, Iron, Orange Powder Coat, GM LS-Series, Each. Designed for maximum value and high performance in GM LS-Series engines.
- Dart SBF SHP Iron Block 4.000 Bore 9.500 DH 31375135 – SHP Bare Block, 4 in Bore, 9.500 Deck, 1-Piece Seal, Iron, Small Block Ford, Each. Built for durability and precision in circle track applications.
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
-
Dart SBC Little M Iron Block 9.025 4.000/350 31181111
DART
$3,999.99The Dart SBC Little M Iron Block gives you a solid foundation for serious small block Chevy builds without the premium price tag of aluminum alternatives. Its 4.000-inch bore and 9.025-inch deck height provide the flexibility to dial in exactly the...DRT31181111- SKU:
- DRT31181111
- Availability:
- Ships Same Business Day
- Weight:
- 180.00 LBS
$3,999.99Qty in Cart: 0Quantity:Price:$3,999.99Subtotal: -
Dart SBC SHP Iron Block - 9.025 4.000/350 31161111L
DART
$2,299.99The Dart SBC SHP Iron Block delivers the foundation your Small Block Chevy build demands—a purpose-built platform engineered for high-performance applications where reliability and precision matter. Whether you're assembling a street engine or racing...DRT31161111L- SKU:
- DRT31161111L
- Availability:
- Ships Same Business Day
- Weight:
- 215.00 LBS
$2,299.99Qty in Cart: 0Quantity:Price:$2,299.99Subtotal: -
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: -
Dart SBC SHP Iron Block 9.025 4.125/400 31162211
DART
$2,299.99Whether you're building a street-dominating small-block or a competition engine, the Dart SBC SHP Iron Block gives you a proven foundation with the strength to handle serious power. This bare block accepts a wide range of internal components, making it...DRT31162211- SKU:
- DRT31162211
- Availability:
- Ships Same Business Day
- Weight:
- 178.00 LBS
- MFG Part #:
- 31162211
$2,299.99Qty in Cart: 0Quantity:Price:$2,299.99Subtotal: -
Dart SBC Pro SHP Iron Block - 9.025 4.125/350 31161212
DART
$3,799.99The Dart SBC Pro SHP Iron Block delivers the foundation your small block build needs for serious performance and reliability. Built with a robust iron construction and professional-grade machining, this block handles high-horsepower applications while...DRT31161212- SKU:
- DRT31161212
- Availability:
- Ships Same Business Day
- Weight:
- 182.00 LBS
- MFG Part #:
- 31161212
$3,799.99Qty in Cart: 0Quantity:Price:$3,799.99Subtotal: -
Dart SBC SHP Iron Block - 9.025 4.125/350 31161211
DART
$2,299.99The Dart SBC SHP Iron Block delivers the foundation your Small Block Chevy build demands—engineered for both street and competition applications with a proven iron construction that handles sustained high-RPM operation. Whether you're building a 350...DRT31161211- SKU:
- DRT31161211
- Availability:
- Ships Same Business Day
- Weight:
- 176.00 LBS
- MFG Part #:
- 31161211
$2,299.99Qty in Cart: 0Quantity:Price:$2,299.99Subtotal: -
Dart SBC Pro SHP Iron Block - 9.025 4.000/350 31161112
DART
$3,799.99The Dart SBC Pro SHP Iron Block is engineered for builders who demand a solid foundation for high-output small-block Chevy engines. This bare block delivers the structural integrity and precision CNC-machining necessary for forced induction, nitrous, or...DRT31161112- SKU:
- DRT31161112
- Availability:
- Ships Same Business Day
- Weight:
- 192.00 LBS
- MFG Part #:
- 31161112
$3,799.99Qty in Cart: 0Quantity:Price:$3,799.99Subtotal: -
Dart SBC SHP Iron Block - 9.025 4.000/350 31161111
DART
$2,299.99The Dart SBC SHP Iron Block delivers the reliability and structural integrity demanded by serious Small Block Chevy builders. Whether you're assembling a streetable 350 or blueprinting a competition engine, this bare block provides a proven foundation...DRT31161111- SKU:
- DRT31161111
- Availability:
- Ships Same Business Day
- Weight:
- 186.00 LBS
- MFG Part #:
- 31161111
$2,299.99Qty in Cart: 0Quantity:Price:$2,299.99Subtotal:
