Engines, Blocks and Components
Circle Track Engines Blocks & Components at JJ Motorsports
Build or upgrade your circle track engine using durable blocks and precision components like deck plug kits and cylinder sleeves from JJ Motorsports. Designed for racing environments, these products are essential for a solid foundation, ensuring optimal performance and reliability in demanding IMCA, USMTS, and dirt oval conditions for late models, modifieds, and street stocks.
Shop trusted brands like Chevrolet Performance for LSX blocks, Dart for high-performance options, and Eagle for forged internals. Explore related categories such as Circle Track Engines, Complete for full assemblies or Circle Track Engines, Bare Blocks for foundational upgrades.
Top Circle Track Engines Blocks & Components
- Engine Dowel Pins GM SBC X Long Bell housing pins Motor plate Chevy Transmission – GM X-long Engine Dowel Pins 2" Long .620" OD. A must for any application running a mid-mount plate to ensure proper alignment of engine and transmission. Pair - 2 per package.
- Dressed 88869604 CT400 IMCA-Sealed 604 Chevy Crate Engine, Dynoed – Dressed version includes distributor, distributor clamp, spark plug wires, and fuel pump block off plate in addition to the GM supplied crate engine. IMCA sealed and approved for use in IMCA. Dyno-verified horsepower and torque and will include a...
- Chevrolet Performance Chevy Performance LSX Cast Iron Block - 4.185 Bore Finished 19417353 – Engine 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. The LSX Bowtie Engine Block showcases three major...
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!
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- Qty in Cart
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- Price
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Eagle SBC Rotating Assembly Kit - Street & Strip 13021040
EAGLE
$1,603.99A solid rotating assembly is the foundation of any high-performance small block build, and this Eagle kit delivers the reliability you need whether you're hitting the strip or cruising the street...EAG13021040- SKU:
- EAG13021040
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$1,603.99Qty in Cart: 0Quantity:Price:$1,603.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Street & Strip 13021030
EAGLE
$1,653.99A rotating assembly is the foundation of any serious engine build—get this wrong, and you're headed for catastrophic failure. The Eagle SBC kit delivers a complete, matched set of premium components...EAG13021030- SKU:
- EAG13021030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$1,653.99Qty in Cart: 0Quantity:Price:$1,653.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Street & Strip 13020030
EAGLE
$1,752.99A complete rotating assembly is the foundation of any serious Small Block Chevy build—and this Eagle kit delivers the strength and precision you need for consistent power whether you're running...EAG13020030- SKU:
- EAG13020030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$1,752.99Qty in Cart: 0Quantity:Price:$1,752.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Street & Strip 13010040
EAGLE
$1,322.99Building a 406 cubic inch Small Block Chevy that delivers reliable power across street and strip applications demands a rotating assembly engineered for both durability and consistent performance...EAG13010040- SKU:
- EAG13010040
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$1,322.99 -
Eagle SBC Rotating Assembly Kit - Street & Strip 13007030
EAGLE
$1,571.99Building a 383 Small Block Chevy that delivers reliable power across street and strip applications demands a rotating assembly engineered for both durability and performance. The Eagle SBC Rotating...EAG13007030- SKU:
- EAG13007030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$1,571.99 -
Eagle SBC Rotating Assembly Kit - Street & Strip 13006030
EAGLE
$1,653.99Building a 383 cubic-inch Small Block Chevy that can handle both street cruising and strip duty demands a rotating assembly engineered for reliability under sustained load. The Eagle SBC Rotating...EAG13006030- SKU:
- EAG13006030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$1,653.99 -
Eagle SBC Rotating Assembly Kit - Street & Strip 13005040
EAGLE
$1,350.99Building a reliable 383 stroker that delivers consistent power across street and strip applications demands a rotating assembly engineered for both durability and performance. The Eagle SBC Rotating...EAG13005040- SKU:
- EAG13005040
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$1,350.99 -
Eagle SBC Rotating Assembly Kit - Street & Strip 13005030
EAGLE
$1,350.99If you're building a street-strip 383 small block that demands reliability without compromise, the Eagle SBC Rotating Assembly Kit delivers the foundation every serious engine needs. This...EAG13005030- SKU:
- EAG13005030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$1,350.99 -
Dart Block Sleeve - SBC 4.125 ID x 5.625 Long 32110213
DART
$199.50A worn or damaged cylinder bore can compromise compression, oil control, and overall engine reliability—especially in high-performance or rebuilt Small Block Chevy applications. The Dart Block Sleeve...DRT32110213- SKU:
- DRT32110213
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
$199.50 -
Dart SBF Block Parts Kit SHP Blocks 32000015
DART
$117.02Building a bulletproof Small Block Ford engine requires more than just a core block—you need quality OEM hardware that won't compromise your build. The Dart SHP Blocks Parts Kit supplies the critical...DRT32000015- SKU:
- DRT32000015
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
$117.02 -
Dart SBC Little M Iron Block 9.025 4.125/400 31192211
DART
$3,799.99If you're building a small block Chevy engine that needs to handle real power without breaking the bank, the Dart Little M iron block is engineered for reliability at the track or street. Its...DRT31192211- SKU:
- DRT31192211
- Availability:
- Ships Same Business Day
- Weight:
- 203.00 LBS
$3,799.99Qty in Cart: 0Quantity:Price:$3,799.99Subtotal: -
Dart SBC Little M Iron Block 9.025 4.125/350 31191211
DART
$3,799.99Whether you're building a budget-friendly street engine or a competition-ready small block, the Dart Little M delivers the structural integrity and modern features you need without the premium price...DRT31191211- SKU:
- DRT31191211
- Availability:
- Ships Same Business Day
- Weight:
- 180.00 LBS
$3,799.99Qty in Cart: 0Quantity:Price:$3,799.99Subtotal: -
Dart SBC Little M Iron Block 9.025 4.000/350 31191111
DART
$3,799.99If you're building a street or race engine on a realistic budget, the Dart Little M iron block delivers the reliability and performance of a purpose-built platform without the premium price tag. This...DRT31191111- SKU:
- DRT31191111
- Availability:
- Ships Same Business Day
- Weight:
- 182.00 LBS
$3,799.99Qty in Cart: 0Quantity:Price:$3,799.99Subtotal: -
Dart SBC Little M Iron Block 9.025 4.125/400 31182211
DART
$3,999.99The Dart SBC Little M Iron Block is engineered for builders who demand proven reliability without compromise. With a 4.125" bore and 9.025" deck height, this block provides the foundation for...DRT31182211- SKU:
- DRT31182211
- Availability:
- Ships Same Business Day
- Weight:
- 238.00 LBS
$3,999.99Qty in Cart: 0Quantity:Price:$3,999.99Subtotal: -
Dart SBC Little M Iron Block 9.025 4.000/350 31181111LT
DART
$6,934.99If you're building a serious Small Block Chevy engine from the ground up, you need a foundation that won't compromise your power goals. The Dart SBC Little M Iron Block delivers the strength,...DRT31181111LT- SKU:
- DRT31181111LT
- Availability:
- Ships Same Business Day
- Weight:
- 230.00 LBS
$6,934.99 -
Allstar Performance Cylinder Head Dowel Pin Set SBF 4pcs ALL87028
ALLSTAR PERFORMANCE
$7.49Proper cylinder head alignment is critical to maintaining compression integrity and preventing gasket failure—especially under high-boost or extended racing conditions. These OEM-spec dowel pins...ALL87028- SKU:
- ALL87028
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
$7.49 -
Allstar Performance Cylinder Head Dowel Pin Set BBC 4pcs ALL87026
ALLSTAR PERFORMANCE
$6.99Cylinder head dowel pins are critical alignment components that prevent lateral shifting between your cylinder head and block during high-combustion events—misalignment here leads to gasket failure...ALL87026- SKU:
- ALL87026
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
$6.99 -
Allstar Performance Cylinder Head Dowel Pin Set LS 4pcs ALL87024
ALLSTAR PERFORMANCE
$8.99Proper cylinder head alignment is non-negotiable for LS engine builds—even slight misalignment can lead to gasket failure, coolant leaks, and catastrophic engine damage. These OEM-spec dowel pins...ALL87024- SKU:
- ALL87024
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
$8.99 -
Allstar Performance Cylinder Head Dowel Pin Set SBC 4pcs ALL87020
ALLSTAR PERFORMANCE
$6.99Proper cylinder head alignment is critical for consistent combustion chamber sealing and optimal gasket compression in Small Block Chevy engines. Allstar's dowel pin set ensures precise head-to-block...ALL87020- SKU:
- ALL87020
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
$6.99 -
Wehrs Dowel Pin Extra Long Bellhousing Steel (Pair) WEHWM51S
WEHRS MACHINE
$16.00Precise bellhousing alignment is critical for eliminating drivetrain slop and ensuring consistent power transfer during high-stress acceleration and shifting. These Wehrs extra-long dowel pins...WEHWM51S- SKU:
- WEHWM51S
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- WM51S
$16.00
