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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- Price
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Engine Dowel Pins GM SBC X Long Bell housing pins Motor plate Chevy Transmission
J J MOTORSPORTS
$8.95Proper engine-to-transmission alignment is non-negotiable when running a mid-mount motor plate setup. These X-long dowel pins ensure repeatable, precision fitment that eliminates slop and prevents costly misalignment issues down the line. A reliable...D08E9A45- SKU:
- D08E9A45
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$8.95 -
Dressed 88869604 CT400 IMCA-Sealed 604 Chevy Crate Engine, Dynoed
SPEEDWAY MOTORS
If you're competing in IMCA racing, you need an engine that's been verified for performance and sealed for compliance—not a gamble on unknown numbers. This dressed 604 Chevy crate engine arrives dyno-tested and broken-in with factory-set timing and...1218604- SKU:
- 1218604
- Weight:
- 0.10 LBS
Qty in Cart: 0Quantity:Price:Subtotal: -
Chevrolet Performance Chevy Performance LSX Cast Iron Block - 4.185 Bore Finished 19417353
CHEVROLET PERFORMANCE
$5,573.06The LSX Bowtie block is engineered for builders who demand maximum durability and oiling efficiency in high-horsepower applications. With 400 mPa tensile strength—60% stronger than previous generations—this cast iron foundation handles extreme boost...GMP19417353- SKU:
- GMP19417353
- Availability:
- Ships Same Business Day
- Weight:
- 268.00 LBS
$5,573.06 -
Chevrolet Performance Chevy Performance LSX Cast Iron Block - Semi Finish 9.260 DH 19417351
CHEVROLET PERFORMANCE
MSRP: $5,038.95$5,038.94The LSX Bowtie block is purpose-built for builders who demand race-proven engineering without the race-car price tag. Developed in collaboration with NHRA Pro Stock legend Warren Johnson, this CNC-machined cast iron foundation delivers the structural...GMP19417351- SKU:
- GMP19417351
- Availability:
- Ships Same Business Day
- Weight:
- 250.00 LBS
MSRP: $5,038.95$5,038.94 -
Eagle SBC Balanced Rotating Assembly - 383 .030 KITB15454E030
EAGLE
$1,293.99Building a reliable 383 Small Block Chevy requires a rotating assembly engineered for consistent power delivery and durability—the Eagle SBC Balanced Rotating Assembly delivers both with factory-spec precision. This complete kit eliminates the guesswork...EAGB15454E030- SKU:
- EAGB15454E030
- Availability:
- Ships Same Business Day
- Weight:
- 95.00 LBS
$1,293.99 -
Eagle SBC Street Perf Engine Assembly Balanced KITB15405E060
EAGLE
$1,529.99Building a street-performance Small Block Chevy demands a rotating assembly engineered for reliability under sustained load and heat. The Eagle SBC Street Perf delivers a balanced, internally matched rotating assembly that eliminates guesswork and...EAGB15405E060- SKU:
- EAGB15405E060
- Availability:
- Ships Same Business Day
- Weight:
- 95.00 LBS
$1,529.99 -
Eagle SBC Balanced Rotating Assembly Kit KITB15402E040
EAGLE
$1,209.99A balanced rotating assembly is the foundation of any reliable SBC build, and this Eagle kit delivers the durability and performance characteristics you need for street and strip applications. The hypereutectic piston design combined with a cast crank...EAGB15402E040- SKU:
- EAGB15402E040
- Availability:
- Ships Same Business Day
- Weight:
- 88.00 LBS
$1,209.99 -
Dart SBF SHP Iron Block 4.000 Bore 9.500 DH 31375135
DART
$2,699.99The Dart SBF SHP Iron Block is engineered for serious Small Block Ford builders who demand a proven foundation for high-output street and race engines. This bare block delivers the strength and precision machining required to support aggressive boost...DRT31375135- SKU:
- DRT31375135
- Availability:
- Ships Same Business Day
- Weight:
- 238.00 LBS
$2,699.99Qty in Cart: 0Quantity:Price:$2,699.99Subtotal: -
SBC 400 Crate Engine - Base Version w/Alm Heads BPEBP4002CT1
BLUEPRINT ENGINES
$7,599.00A 400 cubic inch small-block powerhouse engineered for serious builders who demand reliable performance out of the box. This crate engine arrives fully assembled with aluminum heads and modern internals, eliminating the guesswork of component matching...BPEBP4002CT1- SKU:
- BPEBP4002CT1
- Availability:
- Ships Same Business Day
- Weight:
- 419.00 LBS
$7,599.00 -
SBC 383 Crate Engine Fulley Dressed BP38318CTC1D
BLUEPRINT ENGINES
$7,299.00A fully dressed 383 cubic inch crate engine delivers 436 horsepower with the reliability and convenience of a bolt-in solution—no core exchange, no surprises, just immediate bolt-and-go installation. Whether you're building a street machine, classic hot...BPEBP38318CTC1D- SKU:
- BPEBP38318CTC1D
- Availability:
- Ships Same Business Day
- Weight:
- 475.00 LBS
$7,299.00Qty in Cart: 0Quantity:Price:$7,299.00Subtotal: -
SBC 383 Crate Engine - Base Dressed w/Alm Heads BP38318CTC1
BLUEPRINT ENGINES
$6,799.00A 383 cubic-inch small block delivers serious power without the complexity of a full engine build. This base-dressed crate engine arrives ready for installation with aluminum heads, eliminating months of machine shop time and helping you get back on...BPEBP38318CTC1- SKU:
- BPEBP38318CTC1
- Availability:
- Ships Same Business Day
- Weight:
- 460.00 LBS
$6,799.00 -
BluePrint SBC Crate Engine - 383 Base w/Aluminum Heads BP38318CT1
BLUEPRINT ENGINES
$6,199.00If you're building a small-block Chevy that demands reliable, repeatable power, the BluePrint SBC 383 delivers 436 hp and 443 ft-lbs of torque in a turnkey package. This crate engine eliminates guesswork with factory-quality machining, a modern hydraulic...BPEBP38318CT1- SKU:
- BPEBP38318CT1
- Availability:
- Ships Same Business Day
- Weight:
- 478.00 LBS
$6,199.00 -
Chevrolet Performance Chevrolet Performance 88869604 CT400 IMCA-Sealed 604 Crate Engine
CHEVROLET PERFORMANCE
If you're competing in IMCA-sanctioned racing or building a sealed-class engine that demands reliability and consistent power, the Chevrolet Performance CT400 delivers the performance ceiling you need without compromise. This crate engine arrives...91019318604- SKU:
- 91019318604
- Weight:
- 0.10 LBS
Qty in Cart: 0Quantity:Price:Subtotal: -
Chevy LS Freeze Plug Kit Brass PE-496-B
PIONEER
$22.49Freeze plugs are critical engine sealing components that prevent coolant leakage and protect your LS engine block from internal corrosion. OEM plugs degrade over time, especially in high-performance applications where engine temperatures and pressures...PIOPE-496-B- SKU:
- PIOPE-496-B
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
$22.49 -
Chevy LS Freeze Plug Kit PE-496
PIONEER
$20.99Freeze plugs are a critical component that prevents catastrophic engine damage from coolant expansion in cold conditions or overheating scenarios. The Chevy LS Freeze Plug Kit PE-496 provides complete coverage for your LS-series engine with OEM-quality...PIOPE-496- SKU:
- PIOPE-496
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
$20.99 -
Expansion Plug Kit GM LS Series Engines MPE-900BR-GP
MELLING
$18.49Expansion plugs are critical wear items that seal coolant passages in LS engine blocks, preventing internal leaks that can lead to overheating and catastrophic engine failure. Whether you're rebuilding a street engine or maintaining a race-proven...MELMPE-900BR-GP- SKU:
- MELMPE-900BR-GP
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$18.49 -
Eagle SBF Rotating Assembly Kit 289/302 16003040
EAGLE
$1,575.99A rotating assembly is the foundation of any reliable high-performance engine build. This Eagle kit delivers a bulletproof combination of a cast iron crank paired with forged pistons and I-beam connecting rods—giving you the structural integrity needed...EAG16003040- SKU:
- EAG16003040
- Availability:
- Ships Same Business Day
- Weight:
- 85.00 LBS
$1,575.99 -
Eagle SBC Rotating Assembly Kit - Street & Strip 13202040
EAGLE
$1,334.99A strong rotating assembly is the foundation of any reliable small block Chevy build, whether you're prepping for weekend strip runs or street duty. The Eagle SBC kit delivers proven durability with a forged-quality cast crank and hypereutectic pistons...EAG13202040- SKU:
- EAG13202040
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$1,334.99Qty in Cart: 0Quantity:Price:$1,334.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Street & Strip 13202030
EAGLE
$1,334.99A reliable rotating assembly is the foundation of any street or strip Small Block Chevy build—get it wrong and you're looking at catastrophic failure. The Eagle SBC Rotating Assembly Kit delivers OEM-quality components engineered for consistent power...EAG13202030- SKU:
- EAG13202030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$1,334.99Qty in Cart: 0Quantity:Price:$1,334.99Subtotal: -
Eagle SBC Rotating Assembly Kit Street/Strip 13056030
EAGLE
$1,620.99A rotating assembly is the foundation of any reliable high-performance engine—when you're pushing power on the street or at the strip, your crank, pistons, and rods need to work in perfect harmony. The Eagle SBC 383 delivers forged pistons and a proven...EAG13056030- SKU:
- EAG13056030
- Availability:
- Ships Same Business Day
- Weight:
- 55.00 LBS
$1,620.99
