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
-
Isky 1.570 Dual Valve Spring Set w/Damper (16pk) 9987RADML
ISKY CAMS
$694.99Valve spring durability is critical when pushing your engine to higher RPMs and boost levels—factory springs simply can't handle sustained performance demands. The Isky 1.570 Dual Valve Spring Set delivers the stiffness and reliability required to...ISK9987-RADML- SKU:
- ISK9987-RADML
- Availability:
- Ships Same Business Day
- Weight:
- 6.00 LBS
- MFG Part #:
- 9987-RADML
$694.99Qty in Cart: 0Quantity:Price:$694.99Subtotal: -
Isky 1.560 Valve Springs 9985RAD
ISKY CAMS
$558.99High-rpm stability and consistent valve control are critical when pushing your engine to the limit, and undersized or worn valve springs compromise both. The Isky 1.560 Valve Springs deliver the spring rate and damping characteristics needed for...ISK9985-RAD- SKU:
- ISK9985-RAD
- Availability:
- Ships Same Business Day
- Weight:
- 6.05 LBS
- MFG Part #:
- 9985RAD
$558.99 -
Isky 1.560 Valve Springs 9985
ISKY CAMS
$492.99Valve springs are the backbone of reliable power delivery at high RPM, and Isky's 1.560 springs deliver the consistency you need to hold valve timing without float or failure. Built to tool room tolerances, these dual-spring assemblies provide the...ISK9985- SKU:
- ISK9985
- Availability:
- Ships Same Business Day
- Weight:
- 6.12 LBS
- MFG Part #:
- 9985
$492.99 -
Isky 1.560 Valve Springs 9975
ISKY CAMS
$490.99Valve springs are the unsung foundation of any high-revving engine—they're responsible for controlling rocker arm geometry and preventing float at peak RPM. The Isky 1.560 springs deliver the stiffness and consistency you need to maintain precise valve...ISK9975- SKU:
- ISK9975
- Availability:
- Ships Same Business Day
- Weight:
- 5.94 LBS
- MFG Part #:
- 9975
$490.99 -
Isky 1.560 Valve Springs 9965
ISKY CAMS
$491.99Valve spring selection directly impacts cylinder head durability, engine RPM ceiling, and overall reliability under sustained high-load conditions. The Isky 1.560 springs deliver the stiffness and consistency required for aggressive cam profiles and...ISK9965- SKU:
- ISK9965
- Availability:
- Ships Same Business Day
- Weight:
- 6.00 LBS
- MFG Part #:
- 9965
$491.99 -
Isky 1.625 Valve Springs 9955RAD
ISKY CAMS
$558.99Valve springs are critical to maintaining precise valve timing and preventing float at high RPMs—failure here means catastrophic engine damage. The Isky 1.625 RAD-9000 springs deliver consistent lift and closure through aggressive cam profiles, making...ISK9955-RAD- SKU:
- ISK9955-RAD
- Availability:
- Ships Same Business Day
- Weight:
- 6.35 LBS
- MFG Part #:
- 9955RAD
$558.99 -
Isky 1.625 Valve Springs 9945RAD
ISKY CAMS
$617.99High-revving engines demand valve springs engineered to maintain precise lift and closure at extreme RPMs—and the Isky 1.625 valve springs deliver the reliability needed for sustained performance. With a robust 550 lb/in spring rate and dual-spring...ISK9945-RAD- SKU:
- ISK9945-RAD
- Availability:
- Ships Same Business Day
- Weight:
- 6.66 LBS
- MFG Part #:
- 9945RAD
$617.99 -
Isky 1.625 Valve Springs 9945
ISKY CAMS
$481.99Valve spring selection directly impacts your engine's ability to maintain proper valve control under high RPM conditions, especially in forced induction or heavily modified applications. The Isky 1.625 springs deliver the consistent seat pressure and...ISK9945- SKU:
- ISK9945
- Availability:
- Ships Same Business Day
- Weight:
- 6.60 LBS
- MFG Part #:
- 9945
$481.99 -
Isky 1.560 Valve Springs 9935
ISKY CAMS
$448.99High-RPM valve train stability demands springs engineered to precise tolerances, and the Isky 1.560 Valve Springs deliver exactly that. With a robust 490 lb/in spring rate and dual-spring design, these springs maintain consistent valve control across...ISK9935- SKU:
- ISK9935
- Availability:
- Ships Same Business Day
- Weight:
- 5.49 LBS
- MFG Part #:
- 9935
$448.99 -
Isky 1.534 Valve Springs 9905
ISKY CAMS
$474.99Valve spring selection directly impacts your engine's ability to maintain precise valve timing under extreme RPM conditions. The Isky 1.534 springs deliver the stiffness and consistency required for high-revving applications, whether you're building a...ISK9905- SKU:
- ISK9905
- Availability:
- Ships Same Business Day
- Weight:
- 5.56 LBS
- MFG Part #:
- 9905
$474.99 -
Isky 1.560in Valve Springs 9385PLUS
ISKY CAMS
$372.99Valve spring performance directly impacts your engine's ability to maintain precise valve timing under high RPM loads—critical for both naturally aspirated and forced induction builds. The Isky 1.560in Plus-Series springs deliver consistent load rates...ISK9385PLUS- SKU:
- ISK9385PLUS
- Availability:
- Ships Same Business Day
- Weight:
- 5.99 LBS
- MFG Part #:
- 9385PLUS
$372.99Qty in Cart: 0Quantity:Price:$372.99Subtotal: -
Isky 1.560in Valve Springs 9375PLUS
ISKY CAMS
$461.99High-revving engines demand valve springs engineered for sustained performance and reliability under extreme conditions. The Isky 1.560in Plus-Series springs deliver consistent load rates across the entire lift cycle, preventing float and maintaining...ISK9375PLUS- SKU:
- ISK9375PLUS
- Availability:
- Ships Same Business Day
- Weight:
- 5.99 LBS
- MFG Part #:
- 9375PLUS
$461.99Qty in Cart: 0Quantity:Price:$461.99Subtotal: -
Isky 1.550in Valve Springs 9365SP
ISKY CAMS
$392.99Valve spring performance directly impacts your engine's ability to maintain valve control at high RPM, especially in forced induction or heavily modified applications. The Isky 1.550in SP-Series springs deliver the spring rate and damping characteristics...ISK9365-SP- SKU:
- ISK9365-SP
- Availability:
- Ships Same Business Day
- Weight:
- 5.94 LBS
- MFG Part #:
- 9365SP
$392.99 -
Isky 1.560in Valve Springs 9365PLUS
ISKY CAMS
$364.99High-RPM engine builds demand valve springs engineered for sustained performance under extreme pressure and heat. The Isky 1.560in Valve Springs deliver the spring rate and damping characteristics needed to maintain valve control across aggressive cam...ISK9365PLUS- SKU:
- ISK9365PLUS
- Availability:
- Ships Same Business Day
- Weight:
- 6.00 LBS
- MFG Part #:
- 9365PLUS
$364.99 -
Isky 1.550in Valve Springs 9365
ISKY CAMS
$277.99Isky's 1.550in valve springs are engineered for high-RPM reliability and consistent valve control in demanding racing applications. The dual-spring design with damper eliminates harmonics and float, maintaining precise valve timing under extreme cylinder...ISK9365- SKU:
- ISK9365
- Availability:
- Ships Same Business Day
- Weight:
- 5.95 LBS
- MFG Part #:
- 9365
$277.99Qty in Cart: 0Quantity:Price:$277.99Subtotal: -
Isky 1.550in Valve Springs 9315
ISKY CAMS
$271.99Valve spring performance directly impacts your engine's ability to maintain valve control at high RPM, where stock springs often fail to deliver. The Isky 1.550in Valve Springs 9315 provide the stiffness and damping characteristics needed for aggressive...ISK9315- SKU:
- ISK9315
- Availability:
- Ships Same Business Day
- Weight:
- 5.66 LBS
- MFG Part #:
- 9315
$271.99 -
Isky 1.540in Valve Springs 9265
ISKY CAMS
$289.99Valve spring performance directly impacts your engine's RPM ceiling, valve control, and overall durability under high-load conditions. The Isky 1.540in Valve Springs deliver consistent spring rates and minimal float across the entire rev range, making...ISK9265- SKU:
- ISK9265
- Availability:
- Ships Same Business Day
- Weight:
- 5.66 LBS
- MFG Part #:
- 9265
$289.99 -
Isky 7 Deg Titanium Retainers 91TI
ISKY CAMS
$413.99Valve spring retainers are critical to maintaining valve control under extreme lift and RPM conditions—especially in forced induction or high-revving applications where factory components fall short. The Isky 7 Deg Titanium Retainers deliver the...ISK91-TI- SKU:
- ISK91-TI
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
- MFG Part #:
- 91TI
$413.99Qty in Cart: 0Quantity:Price:$413.99Subtotal: -
Isky 10 Degree Titanium Retainers (16) 90TI10Deg
ISKY CAMS
$382.99Valve spring retainers are critical to maintaining consistent spring pressure and preventing valve float at high RPM—especially in forced induction and competition builds. Isky's titanium construction reduces rotational mass while delivering the strength...ISK90-TI/10DEG- SKU:
- ISK90-TI/10DEG
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- MFG Part #:
- 90TI10Deg
$382.99 -
Isky 1.530 Valve Springs 8205SP
ISKY CAMS
$261.99If you're running a high-RPM engine build, weak or inconsistent valve spring pressure will cost you power and reliability. The Isky 1.530 Valve Springs deliver the aggressive spring rate and damping control needed to keep your valvetrain stable under...ISK8205-SP- SKU:
- ISK8205-SP
- Availability:
- Ships Same Business Day
- Weight:
- 5.26 LBS
- MFG Part #:
- 8205SP
$261.99
