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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SBC Domed Piston Set 4.040 Bore +11cc 140679
SPORTSMAN RACING PRODUCTS
$734.99If you're building a high-compression Small Block Chevy engine, piston selection is critical to reliability and power output. These forged domed pistons deliver the compression ratio and durability required for serious racing or boosted applications...SRP140679- SKU:
- SRP140679
- Availability:
- Ships Same Business Day
- Weight:
- 14.19 LBS
- MFG Part #:
- 140679
$734.99 -
SBF Flat Top Piston Set 4.030 Bore -5cc 138734
SPORTSMAN RACING PRODUCTS
$656.99If you're building a high-compression Small Block Ford engine, piston choice directly impacts combustion efficiency, detonation resistance, and overall power output. These forged flat-top pistons deliver the reduced displacement you need for increased...SRP138734- SKU:
- SRP138734
- Availability:
- Ships Same Business Day
- Weight:
- 14.85 LBS
- MFG Part #:
- 138734
$656.99 -
SBF 351W F/T Piston Set 4.030 Bore -5cc 138730
SPORTSMAN RACING PRODUCTS
$656.99If you're building a high-compression Small Block Ford engine, piston selection directly impacts combustion efficiency, detonation resistance, and overall power output. This SBF 351W F/T piston set delivers the compression ratio you need with forged...SRP138730- SKU:
- SRP138730
- Availability:
- Ships Same Business Day
- Weight:
- 15.30 LBS
- MFG Part #:
- 138730
$656.99Qty in Cart: 0Quantity:Price:$656.99Subtotal: -
SBC Flat Top Piston Set 4.030 Bore 138085
SPORTSMAN RACING PRODUCTS
$656.99A quality piston set is the foundation of a reliable, efficient Small Block Chevy build—whether you're chasing peak horsepower or longevity on the strip. The SBC Flat Top Piston Set delivers forged durability and precision bore sizing to eliminate...SRP138085- SKU:
- SRP138085
- Availability:
- Ships Same Business Day
- Weight:
- 13.94 LBS
- MFG Part #:
- 138085
$656.99 -
GM LS Roller R/A's - 1.7 Ratio 8mm Ped Mnt 1098
SCORPION PERFORMANCE
$589.88GM LS rocker arms are critical to maximizing valve lift and duration without sacrificing reliability—these 1.7-ratio roller units directly increase flow efficiency and reduce parasitic drag compared to stock geometry. A full-roller design eliminates...SPN1098- SKU:
- SPN1098
- Availability:
- Ships Same Business Day
- Weight:
- 6.63 LBS
- MFG Part #:
- 1098
$589.88 -
SBC Roller Rocker Arms 1.5/1.6 Ratio 7/16 Stud 1028
SCORPION PERFORMANCE
$446.65Roller rocker arms are essential for maximizing valve lift and duration without sacrificing reliability, especially in high-RPM racing applications. These full-roller units reduce friction across the entire valve train, allowing your SBC to breathe...SPN1028- SKU:
- SPN1028
- Availability:
- Ships Same Business Day
- Weight:
- 8.45 LBS
- MFG Part #:
- 1028
$446.65Qty in Cart: 0Quantity:Price:$446.65Subtotal: -
SBF Roller Rocker Arms 1.72 Ratio 3/8 Stud 1019
SCORPION PERFORMANCE
$446.65Maximize your SBF's valve train efficiency with a full roller design that reduces friction and increases lift consistency across the RPM band. These 1.72:1 ratio rocker arms deliver measurable gains in cylinder head flow and overall engine responsiveness...SPN1019- SKU:
- SPN1019
- Availability:
- Ships Same Business Day
- Weight:
- 8.70 LBS
- MFG Part #:
- 1019
$446.65Qty in Cart: 0Quantity:Price:$446.65Subtotal: -
SBF Roller Rocker Arms 1.6 Ratio 7/16 Stud 1018
SCORPION PERFORMANCE
$446.65Maximize valve lift and duration without sacrificing reliability—roller rocker arms reduce friction across the entire RPM band, translating to faster valve transitions and measurable horsepower gains. The 1.6 ratio geometry delivers the mechanical...SPN1018- SKU:
- SPN1018
- Availability:
- Ships Same Business Day
- Weight:
- 8.50 LBS
- MFG Part #:
- 1018
$446.65 -
Piston Ring Set 4.020 1/16 1/16 3/16 SEAR9771-25
SEALED POWER
$152.99Piston rings are critical to engine sealing and compression retention—without quality rings, you're losing power and risking blow-by that degrades performance. The Speed Pro 4.020 Ring Set delivers reliable sealing with plasma-moly facing that resists...SEAR9771-25- SKU:
- SEAR9771-25
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- MFG Part #:
- R977125
$152.99 -
Piston Ring Set 4.040 1/16 1/16 3/16 SEAR9401-45
SEALED POWER
$150.99Piston ring quality directly impacts compression, oil control, and engine longevity—especially in high-demand racing and performance applications. The Speed Pro 4.040 ring set delivers low-tension design with plasma moly coating for reduced friction,...SEAR9401-45- SKU:
- SEAR9401-45
- Availability:
- Ships Same Business Day
- Weight:
- 1.02 LBS
- MFG Part #:
- R940145
$150.99 -
Piston Ring Set 4.060 5/64 5/64 3/16 SEAR9343-65
SEALED POWER
$169.99A quality piston ring set is critical for maintaining proper compression, oil control, and ring seal in high-performance engines. Speed Pro's plasma-moly construction delivers superior wear resistance and longevity, especially under sustained high-RPM...SEAR9343-65- SKU:
- SEAR9343-65
- Availability:
- Ships Same Business Day
- Weight:
- 1.12 LBS
- MFG Part #:
- R934365
$169.99 -
Main Bearing Set SEA140M20
SEALED POWER
$77.99Main bearing wear directly impacts engine longevity, oil pressure stability, and overall reliability—especially in performance applications where tight tolerances are non-negotiable. This precision-engineered main bearing set delivers the exact fit and...SEA140M20- SKU:
- SEA140M20
- Availability:
- Ships Same Business Day
- Weight:
- 1.48 LBS
- MFG Part #:
- 140M20
$77.99Qty in Cart: 0Quantity:Price:$77.99Subtotal: -
Main Bearing Set SEA139M20
SEALED POWER
$88.99A quality main bearing set is foundational to engine longevity and reliability, especially in high-revving or rebuilt engines where precision fit directly impacts oil pressure and overall durability. The Speed Pro 139M20 delivers the exact undersize spec...SEA139M20- SKU:
- SEA139M20
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- MFG Part #:
- 139M20
$88.99 -
3 Stage Dry Sump Pump SBC Engine Mount SCP-201A
STOCK CAR PROD-OIL PUMPS
$964.99A dry sump system is essential for high-performance and competition engines, eliminating oil starvation during sustained cornering, acceleration, and deceleration. The SCP-201A delivers reliable oil management with its three-stage design, maintaining...SCPSCP-201A- SKU:
- SCPSCP-201A
- Availability:
- Ships Same Business Day
- Weight:
- 8.64 LBS
- MFG Part #:
- SCP-201-A
$964.99 -
Medium Pressure Spring 1473
STOCK CAR PROD-OIL PUMPS
$10.99Oil pump reliability is the foundation of engine longevity, and a worn or mismatched relief spring compromises both pressure stability and component protection. The Medium Pressure Spring 1473 is engineered to maintain consistent oil delivery across...SCP1473- SKU:
- SCP1473
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MFG Part #:
- 1473
$10.99Qty in Cart: 0Quantity:Price:$10.99Subtotal: -
SBC 4340 Forged Crank - 3.875 Stroke 4-350-3875-6000
SCAT ENTERPRISES
$944.99If you're building a high-displacement Small Block Chevy engine and need the backbone to handle sustained power and torque, a quality forged crankshaft is non-negotiable. The SBC 4340 Forged Crank delivers the stroke you need to unlock additional cubic...SCA4-350-3875-6000- SKU:
- SCA4-350-3875-6000
- Availability:
- Ships Same Business Day
- Weight:
- 58.05 LBS
- MFG Part #:
- 4-350-3875-6000
$944.99 -
SBF 4340 Forged Crank - 3.000 Stroke 4-302-3000-5090-2123
SCAT ENTERPRISES
$910.99A forged steel crankshaft is the backbone of any high-rpm small block engine, and this 3.000-stroke SBF crank delivers the durability and precision required for sustained performance. Whether you're building a street engine or a competition platform, a...SCA4-302-3000-5090-2123- SKU:
- SCA4-302-3000-5090-2123
- Availability:
- Ships Same Business Day
- Weight:
- 49.75 LBS
- MFG Part #:
- 4-302-3000-5090-2123
$910.99 -
SBC 4340 Forged I-Beam Rods 5.700 3-ICR5700
SCAT ENTERPRISES
$422.99If you're building or rebuilding an SBC engine for serious power, stock connecting rods won't cut it. These 4340 forged I-beam rods deliver the strength and reliability needed to handle boost, nitrous, or high-RPM abuse without catastrophic failure...SCA3-ICR5700- SKU:
- SCA3-ICR5700
- Availability:
- Ships Same Business Day
- Weight:
- 12.15 LBS
- MFG Part #:
- 3-ICR5700
$422.99 -
SBC 4340 Forged I-Beam Rods 6.200 w/7/16 Bolts 2-ICR6200-7/16
SCAT ENTERPRISES
$557.99If you're building a high-revving small block Chevy that demands reliability under extreme load, connecting rod strength is non-negotiable. Pro Comp's 4340 forged I-beam design delivers the durability and precision needed for sustained performance,...SCA2-ICR6200-7/16- SKU:
- SCA2-ICR6200-7/16
- Availability:
- Ships Same Business Day
- Weight:
- 12.03 LBS
- MFG Part #:
- 2-ICR6200-7/16
$557.99 -
Quarter Master Oil Pump Bracket Kit Top Mount 117600
QUARTER MASTER
$256.30If you're running a Quarter Master clutchless bellhousing setup, a quality oil pump bracket is non-negotiable—it ensures consistent oil delivery to critical engine components under high-RPM stress. This top-mount bracket kit eliminates guesswork with...QTR117600- SKU:
- QTR117600
- Availability:
- Ships Same Business Day
- Weight:
- 1.32 LBS
- MFG Part #:
- 117600
$256.30
