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 SBC 4340 Forged Crank - 3.750 Stroke - L/W 4350375057LA
EAGLE
$869.99SBC 4340 Forged Crank - 3.750 Stroke - L/WCrankshaftLightweight3.750 in StrokeInternal BalanceForged Steel2 Piece SealSmall Block ChevyEachEAG4350375057LA- SKU:
- EAG4350375057LA
- Availability:
- Ships Same Business Day
- Weight:
- 53.00 LBS
- MFG Part #:
- CRS4350375057LA
$869.99 -
Eagle SBC 4340 Forged Crank - 3.750 Stroke 435037505700
EAGLE
$826.99SBC 4340 Forged Crank - 4.35038E+11 High-performance crankshaft designed for durability and strength 3.750-inch stroke for optimized engine performance Internal balance ensures smooth operation and reduced vibration Manufactured from forged steel for...EAG435037505700- SKU:
- EAG435037505700
- Availability:
- Ships Same Business Day
- Weight:
- 55.90 LBS
- MFG Part #:
- CRS435037505700
$826.99Qty in Cart: 0Quantity:Price:$826.99Subtotal: -
Eagle SBC 4340 Forged Crank - 3.625 Stroke 435036255700
EAGLE
$854.99SBC 4340 Forged Crank - 3.625 StrokeCrankshaft3.625 in StrokeInternal BalanceForged Steel2 Piece SealSmall Block ChevyEachEAG435036255700- SKU:
- EAG435036255700
- Availability:
- Ships Same Business Day
- Weight:
- 55.90 LBS
- MFG Part #:
- CRS435036255700
$854.99 -
Eagle SBC 4340 Forged Crank - 3.5625 Stroke 435035625700
EAGLE
$857.99SBC 4340 Forged Crank - 3.5625 StrokeCrankshaft3.562 in StrokeInternal BalanceForged Steel2 Piece SealSmall Block ChevyEachEAG435035625700- SKU:
- EAG435035625700
- Availability:
- Ships Same Business Day
- Weight:
- 45.25 LBS
- MFG Part #:
- CRS435035625700
$857.99 -
Eagle SBC 4340 Forged Crank - 3.500 Stroke 435035005700
EAGLE
$839.99SBC 4340 Forged Crank - 3.500 StrokeCrankshaft3.500 in StrokeInternal BalanceForged Steel2 Piece SealSmall Block ChevyEachEAG435035005700- SKU:
- EAG435035005700
- Availability:
- Ships Same Business Day
- Weight:
- 55.60 LBS
- MFG Part #:
- CRS435035005700
$839.99 -
Eagle SBC 4340 Forged Crank - 3.480 Stroke - L/W 4350348057LA
EAGLE
$869.99SBC 4340 Forged Crank - 3.480 Stroke - L/WCrankshaftLightweight3.480 in StrokeInternal BalanceForged Steel2 Piece SealSmall Block ChevyEachEAG4350348057LA- SKU:
- EAG4350348057LA
- Availability:
- Ships Same Business Day
- Weight:
- 51.75 LBS
- MFG Part #:
- CRS4350348057LA
$869.99Qty in Cart: 0Quantity:Price:$869.99Subtotal: -
Eagle SBC 4340 Forged Crank - 3.480 Stroke 435034805700
EAGLE
$931.99SBC 4340 Forged Crank - 4.35035E+11 High-performance crankshaft designed for durability and strength Features a 3.480-inch stroke for optimal engine performance Internal balance ensures smooth operation and reduced vibrations Constructed from forged...EAG435034805700- SKU:
- EAG435034805700
- Availability:
- Ships Same Business Day
- Weight:
- 55.00 LBS
- MFG Part #:
- CRS435034805700
$931.99 -
Eagle GM LS1 4340 Forged Crank - 4.000 Stroke 434640006100
EAGLE
$1,089.99GM LS1 4340 Forged Crank - 4.000 StrokeCrankshaft4.000 in StrokeInternal BalanceForged Steel1 Piece SealGM LS-SeriesEachEAG434640006100- 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
$1,093.99GM LS1 4340 Forged Crank - 3.622 StrokeCrankshaft3.622 in StrokeInternal BalanceForged Steel1 Piece SealGM LS-SeriesEachEAG434636226100- 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
$939.99SBF 4340 Forged Crank - 3.400 StrokeCrankshaft3.400 in StrokeInternal BalanceForged Steel1 or 2 Piece SealSmall Block FordEachEAG430234025400- 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
$811.99SBF 4340 Forged Crank - 3.000 StrokeCrankshaft3.000 in StrokeInternal BalanceForged Steel1 or 2 Piece SealSmall Block FordEachEAG430230015090- SKU:
- EAG430230015090
- Availability:
- Ships Same Business Day
- Weight:
- 49.40 LBS
- MFG Part #:
- CRS430230015090
$811.99 -
Eagle SBF Rotating Assembly Kit - Street & Strip 16004030
EAGLE
$1,679.99SBF Rotating Assembly Kit - Street & StripRotating Assembly347 CIDCast CrankForged Pistons3.400 in Stroke4.030 in Bore5.400 in I Beam RodsSmall Block FordKitEAG16004030- SKU:
- EAG16004030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT16004030
$1,679.99 -
Eagle SBC Rotating Assembly Kit - Competition 12504040
EAGLE
$2,609.99SBC Rotating Assembly Kit - 12504040 High-performance rotating assembly designed for competition use Engineered for a powerful 407 CID displacement Durable forged crankshaft for maximum strength and reliability Includes precision-forged pistons to...EAG12504040- SKU:
- EAG12504040
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12504040
$2,609.99Qty in Cart: 0Quantity:Price:$2,609.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Competition 12504030
EAGLE
$2,609.99SBC Rotating Assembly Kit - 12504030 Complete rotating assembly designed for high-performance applications Engineered for 407 CID to maximize power output Durable forged crank for enhanced strength and reliability High-quality forged pistons to...EAG12504030- SKU:
- EAG12504030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12504030
$2,609.99Qty in Cart: 0Quantity:Price:$2,609.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Competition 12503040
EAGLE
$2,509.99SBC Rotating Assembly Kit - CompetitionRotating Assembly407 CIDForged CrankForged Pistons3.750 in Stroke4.165 in Bore6.000 in H Beam RodsSmall Block ChevyKitEAG12503040- SKU:
- EAG12503040
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12503040
$2,509.99Qty in Cart: 0Quantity:Price:$2,509.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Competition 12503030
EAGLE
$2,329.99SBC Rotating Assembly Kit - 12503030 High-performance rotating assembly designed for competition use Engineered for a powerful 407 CID displacement Durable forged crankshaft for enhanced strength and reliability Precision-forged pistons to ensure...EAG12503030- SKU:
- EAG12503030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12503030
$2,329.99Qty in Cart: 0Quantity:Price:$2,329.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Competition 12501030
EAGLE
$2,519.99SBC Rotating Assembly Kit - CompetitionRotating Assembly407 CIDForged CrankForged Pistons3.750 in Stroke4.155 in Bore5.700 in H Beam RodsSmall Block ChevyKitEAG12501030- SKU:
- EAG12501030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12501030
$2,519.99Qty in Cart: 0Quantity:Price:$2,519.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Competition 12029030
EAGLE
$2,649.99SBC Rotating Assembly Kit - 12029030 High-performance Rotating Assembly designed for competition use Engineered for 355 CID Small Block Chevy applications Durable forged crank for exceptional strength and reliability Lightweight forged pistons enhance...EAG12029030- SKU:
- EAG12029030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12029030
$2,649.99 -
Eagle SBC Rotating Assembly Kit - Competition 12020040
EAGLE
$2,509.99SBC Rotating Assembly Kit - CompetitionRotating Assembly357 CIDForged CrankForged Pistons3.500 in Stroke4.040 in Bore6.000 in H Beam RodsSmall Block ChevyKitEAG12020040- SKU:
- EAG12020040
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12020040
$2,509.99 -
Eagle SBC Rotating Assembly Kit - Competition 12020030
EAGLE
$2,636.99SBC Rotating Assembly Kit - CompetitionRotating Assembly357 CIDForged CrankForged Pistons3.500 in Stroke4.030 in Bore6.000 in H Beam RodsSmall Block ChevyKitEAG12020030- SKU:
- EAG12020030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12020030
$2,636.99Qty in Cart: 0Quantity:Price:$2,636.99Subtotal:
