Engines and Components
Circle Track Engine Parts: Camshafts, Blocks & Accessories for Late Models at JJ Motorsports
Power up your circle track engine with premium components from JJ Motorsports. Our selection includes serpentine drive kits, pulley systems, valve covers, engine blocks, camshafts, and more for maximum horsepower, durability, and performance in late models, modifieds, street stocks, and IMCA dirt racing. Compatible with Small Block Chevy (SBC), LS-series, and other racing engines, these high-quality parts ensure reliable operation under intense track conditions.
Shop trusted brands like Jones Racing, Allstar Performance, Chevrolet Performance, and Howards Racing Components. Explore related categories such as circle track drivetrain for transmission upgrades or circle track chassis components for frame enhancements.
Top Circle Track Engine Products
- Jones Racing Serpentine Drive Kit 1020-S – New serpentine drive kit designed for efficient accessory drive in racing engines, weighing 3.61 lbs for lightweight performance.
- Allstar Performance 1:1 Pulley Kit Head Mount PS ALL31082 – Billet aluminum polished pulley kit with 1:1 ratio and 2-groove V-belt, includes crank and water pump pulleys and belts for Small Block Chevy engines with head-mount power steering.
- Allstar Performance Valve Covers SBC Steel Black w/Tubes ALL26147 – Durable steel valve covers in black finish with tubes, designed for Small Block Chevy engines, weighing 5.95 lbs for reliable sealing and style.
- Chevrolet Performance LSX Cast Iron Block - 4.065 Bore Finished 19417352 – Bare cast iron engine block with 4.065 in bore, 9.240 deck height, 6-bolt mains and heads, orange powdercoat finish, compatible with Gen III/IV LS components, supporting up to 4.250 in stroke and 454 cu. in. displacement.
- SBC Solid Roller Cam 111013-10 – High-performance solid roller camshaft from Howards Racing Components for Small Block Chevy engines, weighing 8.70 lbs, ideal for aggressive racing 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
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Eagle GM LS1 4340 Forged Crank - 4.000 Stroke 434640006100
EAGLE
$1,089.99A forged crankshaft is the backbone of any high-performance LS1 engine build, and Eagle's 4340 forged unit delivers the strength and reliability demanded by serious racers and built-engine enthusiasts. This internally balanced design eliminates the need...EAG434640006100- SKU:
- EAG434640006100
- Availability:
- Ships Same Business Day
- Weight:
- 57.90 LBS
- MFG Part #:
- CRS434640006100
$1,089.99 -
Eagle GM LS1 4340 Forged Crank - 3.622 Stroke 434636226100
EAGLE
$1,093.99When you're building a high-displacement LS engine or pushing an existing platform to its limits, your crankshaft must handle extreme loads without compromise. The Eagle GM LS1 4340 Forged Crank delivers the strength and reliability required for serious...EAG434636226100- SKU:
- EAG434636226100
- Availability:
- Ships Same Business Day
- Weight:
- 58.80 LBS
- MFG Part #:
- CRS434636226100
$1,093.99 -
Eagle SBF 4340 Forged Crank - 3.400 Stroke 430234025400
EAGLE
$939.99A forged 4340 steel crankshaft is the foundation of any high-revving, high-horsepower Small Block Ford engine build. The Eagle SBF 4340 delivers the strength and reliability needed to handle aggressive power levels without sacrificing durability, making...EAG430234025400- SKU:
- EAG430234025400
- Availability:
- Ships Same Business Day
- Weight:
- 50.30 LBS
- MFG Part #:
- CRS430234025400
$939.99 -
Eagle SBF 4340 Forged Crank - 3.000 Stroke 430230015090
EAGLE
$812.99A forged 4340 steel crankshaft is the foundation of a reliable, high-RPM Small Block Ford engine build. The Eagle SBF crank delivers the stroke length and internal balance geometry needed to support aggressive power outputs while maintaining durability...EAG430230015090- SKU:
- EAG430230015090
- Availability:
- Ships Same Business Day
- Weight:
- 49.40 LBS
- MFG Part #:
- CRS430230015090
$812.99 -
Eagle SBF Rotating Assembly Kit - Street & Strip 16004030
EAGLE
$1,680.99Building a Street & Strip 347 small block? The Eagle SBF Rotating Assembly Kit delivers the strength you need for both boulevard cruising and track duty. This kit pairs a cast iron crank with forged pistons and I-beam rods—a proven combination that...EAG16004030- SKU:
- EAG16004030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT16004030
$1,680.99Qty in Cart: 0Quantity:Price:$1,680.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Competition 12029030
EAGLE
$2,783.99A competition-grade rotating assembly is the foundation of reliable, repeatable power output in high-revving small block engines. The Eagle SBC kit delivers forged strength throughout—from crank to pistons to rods—giving you the durability to push harder...EAG12029030- SKU:
- EAG12029030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12029030
$2,783.99 -
Eagle SBC Rotating Assembly Kit - Competition 12020040
EAGLE
$2,509.99Building a competition-grade Small Block Chevy engine demands a rotating assembly engineered for sustained high RPM and cylinder pressure—this kit delivers exactly that with forged internals throughout. The Eagle SBC Rotating Assembly gives you the...EAG12020040- SKU:
- EAG12020040
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12020040
$2,509.99 -
Eagle SBC Rotating Assembly Kit - Competition 12004060
EAGLE
$2,660.99When you're building a competition engine, the rotating assembly is your foundation—and compromises here will cost you power, reliability, and race wins. The Eagle SBC Rotating Assembly Kit delivers forged internals engineered to withstand the demands of...EAG12004060- SKU:
- EAG12004060
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12004060
$2,660.99Qty in Cart: 0Quantity:Price:$2,660.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Competition 12004030
EAGLE
$2,650.99Build a Small Block Chevy that delivers reliable power without compromise. This Eagle competition rotating assembly pairs forged internals with precision engineering to handle sustained high-RPM operation, making it ideal for street/strip builds and...EAG12004030- SKU:
- EAG12004030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12004030
$2,650.99Qty in Cart: 0Quantity:Price:$2,650.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Competition 12001040
EAGLE
$2,684.99The Eagle SBC Rotating Assembly Kit delivers the precision engineering and durability required for serious small-block Chevy competition builds. Forged internals throughout this 355 CID package ensure consistent power delivery and reliability under...EAG12001040- SKU:
- EAG12001040
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12001040
$2,684.99 -
Eagle SBC Rotating Assembly Kit - Competition 12001030
EAGLE
$2,684.99A competition-grade rotating assembly is the foundation of reliable, high-output power. The Eagle SBC 12001030 pairs forged internals with proven Small Block Chevy geometry to deliver consistent performance whether you're chasing lap times or building a...EAG12001030- SKU:
- EAG12001030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12001030
$2,684.99 -
Eagle SBC Cast Steel Crank - 3.750 Stroke 103523750
EAGLE
$346.99A quality crankshaft is the foundation of any reliable small block Chevy engine build. The Eagle SBC Cast Steel Crank delivers proven durability and precise stroke geometry for street, strip, and track applications without the premium price tag of forged...EAG103523750- SKU:
- EAG103523750
- Availability:
- Ships Same Business Day
- Weight:
- 52.80 LBS
- MFG Part #:
- CRS103523750
$346.99 -
Eagle SBC Cast Steel Crank - 3.480 Stroke 103523480
EAGLE
$335.99The Eagle SBC Cast Steel Crank delivers the stroke you need for increased displacement and torque output in your Small Block Chevy build. Whether you're upgrading from a stock unit or assembling a high-displacement engine, this cast iron crankshaft...EAG103523480- SKU:
- EAG103523480
- Availability:
- Ships Same Business Day
- Weight:
- 52.95 LBS
- MFG Part #:
- CRS103523480
$335.99Qty in Cart: 0Quantity:Price:$335.99Subtotal: -
Eagle SBC Cast Steel Crank - 3.750 Stroke 103503750
EAGLE
$358.99A quality crankshaft is the foundation of any reliable small-block Chevy engine build. The Eagle SBC Cast Steel Crank delivers the stroke length and external balance characteristics you need for consistent power delivery and durability in both street and...EAG103503750- SKU:
- EAG103503750
- Availability:
- Ships Same Business Day
- Weight:
- 52.05 LBS
- MFG Part #:
- CRS103503750
$358.99 -
Eagle SBC Cast Steel Crank - 3.480 Stroke (IMCA) 103503480CM
EAGLE
$403.99For IMCA racers and SBC builders who demand reliability in competition, the Eagle SBC Cast Steel Crank delivers the durability needed to withstand repeated high-RPM cycles without compromise. This internally balanced 3.480-stroke unit is purpose-built...EAG103503480CM- SKU:
- EAG103503480CM
- Availability:
- Ships Same Business Day
- Weight:
- 54.70 LBS
- MFG Part #:
- CRS103503480CM
$403.99 -
Eagle SBC Cast Steel Crank - 3.480 Stroke 103503480
EAGLE
$349.99A quality crankshaft is the foundation of engine reliability and performance—it directly impacts your power delivery, longevity, and how your engine handles sustained RPM loads. The Eagle SBC Cast Steel Crank delivers the durability you need for street...EAG103503480- SKU:
- EAG103503480
- Availability:
- Ships Same Business Day
- Weight:
- 51.55 LBS
- MFG Part #:
- CRS103503480
$349.99 -
Eagle SBF Cast Steel Crank - 3.400 Stroke 103023402
EAGLE
$332.99The Eagle SBF Cast Steel Crank with 3.400" stroke delivers the displacement and durability your Small Block Ford build demands, whether you're chasing reliable street performance or track-proven reliability. Cast steel construction provides excellent...EAG103023402- SKU:
- EAG103023402
- Availability:
- Ships Same Business Day
- Weight:
- 43.65 LBS
- MFG Part #:
- CRS103023402
$332.99Qty in Cart: 0Quantity:Price:$332.99Subtotal: -
Eagle SBF Cast Steel Crank - 3.250 Stroke 103023252
EAGLE
$316.99If you're building a Small Block Ford engine that demands reliability and proven performance, the Eagle SBF Cast Steel Crank delivers the durability you need for sustained high RPM operation. This externally balanced crankshaft is engineered for...EAG103023252- SKU:
- EAG103023252
- Availability:
- Ships Same Business Day
- Weight:
- 43.00 LBS
- MFG Part #:
- CRS103023252
$316.99 -
Dura Bond HP Cam Bearing Set - SBC Bowtie Block- Coated GMP-8T
DURA-BOND
$139.99Proper cam bearing support is critical to maintaining precise valve timing and protecting your camshaft from premature wear—especially under high-rpm racing conditions. The Dura Bond HP Cam Bearing Set delivers OEM-quality fitment with a specialized...DURGMP-8T- SKU:
- DURGMP-8T
- Availability:
- Ships Same Business Day
- Weight:
- 0.48 LBS
- MFG Part #:
- GMP-8T
$139.99 -
Dura Bond HP Cam Bearing Set - SBC Bowtie Block GMP-8
DURA-BOND
$69.99Worn or undersized cam bearings compromise valve timing accuracy and oil pressure distribution—two critical factors that determine whether your small block runs at peak efficiency or falls short of its potential. The Dura Bond HP Cam Bearing Set restores...DURGMP-8- SKU:
- DURGMP-8
- Availability:
- Ships Same Business Day
- Weight:
- 0.47 LBS
- MFG Part #:
- GMP-8
$69.99
