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!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Bellhousing Dowel Pins 2in Long (2 pc) 930055
TCI
$31.95Bellhousing dowel pins are critical alignment components that ensure your transmission and engine block maintain precise concentricity during assembly and operation. Misalignment in this interface can lead to accelerated wear, vibration, and catastrophic...TCI930055- SKU:
- TCI930055
- Availability:
- Ships Same Business Day
- Weight:
- 0.33 LBS
- MFG Part #:
- 930055
$31.95 -
Billet Main Caps 70-80 Chevy 400 Splayed Outer 1740002
PRW INDUSTRIES, INC.
$207.03A quality set of main caps is critical to engine block integrity under high RPM and boost conditions. These billet caps provide the clamping force and precision fit your 400-cube small block needs to handle sustained performance, whether you're running...PQX1740002- SKU:
- PQX1740002
- Availability:
- Ships Same Business Day
- Weight:
- 8.00 LBS
- MFG Part #:
- 1740002
$207.03Qty in Cart: 0Quantity:Price:$207.03Subtotal: -
Billet Main Caps 67-86 Chevy 350 2 to 4-Bolt 1735003
PRW INDUSTRIES, INC.
$207.91If you're building or rebuilding a small-block Chevy 350, the integrity of your main caps directly impacts engine durability and reliability under load. These billet main caps provide superior clamping force and resist flex better than OEM cast...PQX1735003- SKU:
- PQX1735003
- Availability:
- Ships Same Business Day
- Weight:
- 5.70 LBS
- MFG Part #:
- 1735003
$207.91Qty in Cart: 0Quantity:Price:$207.91Subtotal: -
Billet Main Caps 67-86 Chevy 350 4-Bolt Repl. 1735001
PRW INDUSTRIES, INC.
$222.42Stock cast-iron main caps can flex under high RPM loads, compromising crankshaft stability and risking catastrophic engine failure. Upgrading to billet main caps significantly increases rigidity and load-carrying capacity, ensuring reliable power...PQX1735001- SKU:
- PQX1735001
- Availability:
- Ships Same Business Day
- Weight:
- 6.00 LBS
- MFG Part #:
- 1735001
$222.42 -
SBF Dowel Pin Kit (4) S-1112
PIONEER
$9.99Cylinder head dowel pins are critical alignment components that ensure your Small Block Ford cylinder head seats perfectly on the block during assembly. Without properly installed dowels, you risk gasket failure, coolant leaks, and catastrophic engine...PIOS-1112- SKU:
- PIOS-1112
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MFG Part #:
- S-1112
$9.99 -
SBC Dowel Pin Kit (4) S-1110
PIONEER
$10.99Cylinder head dowel pins are critical alignment components that ensure precise head-to-block positioning during assembly. Improper dowel pin installation or wear can lead to gasket failure, coolant leaks, and combustion chamber compromise—issues that...PIOS-1110- SKU:
- PIOS-1110
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- S-1110
$10.99 -
302 Ford Freeze Plug Kit - Brass PE-108-B
PIONEER
$21.49Freeze plugs are critical engine components that prevent catastrophic coolant system failures—a corroded or failing plug can lead to coolant loss, overheating, and serious engine damage. The PE-108-B brass kit gives you OEM-quality replacements for your...PIOPE108B- SKU:
- PIOPE108B
- Availability:
- Ships Same Business Day
- Weight:
- 0.53 LBS
- MFG Part #:
- PE-108-B
$21.49 -
302 Ford Freeze Plug Kit PE-108
PIONEER
$17.99Freeze plugs are a critical maintenance component that prevent catastrophic engine damage from coolant expansion in freezing conditions—neglecting them invites costly block cracks and complete engine failure. The PE-108 kit delivers a complete solution...PIOPE108- SKU:
- PIOPE108
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- MFG Part #:
- PE-108
$17.99 -
400 Chevy Freeze Plug Kit - Brass PE-101-B
PIONEER
$33.99Freeze plugs are a critical component that prevents catastrophic engine damage from coolant expansion in freezing conditions—neglecting them can lead to cracked blocks and costly rebuilds. This complete brass kit ensures you have all the freeze plugs...PIOPE101B- SKU:
- PIOPE101B
- Availability:
- Ships Same Business Day
- Weight:
- 1.02 LBS
- MFG Part #:
- PE-101-B
$33.99Qty in Cart: 0Quantity:Price:$33.99Subtotal: -
400 Chevy Freeze Plug Kit PE-101
PIONEER
$14.99Freeze plugs are critical wear items that protect your engine block from catastrophic freeze damage and coolant leakage—neglecting them can lead to costly block failure. This complete kit delivers all necessary plugs for a 400 Chevy engine in...PIOPE101- SKU:
- PIOPE101
- Availability:
- Ships Same Business Day
- Weight:
- 0.92 LBS
- MFG Part #:
- PE-101
$14.99 -
350 Chevy Freeze Plug Kit PE-100-R
PIONEER
$19.99Engine coolant system failures often stem from corroded or deteriorating freeze plugs, leaving you stranded with costly block damage. This complete kit eliminates guesswork by providing all the freeze plugs needed for a full Small Block Chevy rebuild,...PIOPE100R- SKU:
- PIOPE100R
- Availability:
- Ships Same Business Day
- Weight:
- 0.71 LBS
- MFG Part #:
- PE-100-R
$19.99 -
350 Chevy Freeze Plug Kit - Brass PE-100-B
PIONEER
$38.99Freeze plugs are critical engine sealing components that prevent coolant leakage and protect your block from freeze damage—especially vital if you're rebuilding or maintaining a classic Small Block Chevy. This brass kit provides all the freeze plugs you...PIOPE100B- SKU:
- PIOPE100B
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- MFG Part #:
- PE-100-B
$38.99 -
350 Chevy Freeze Plug Kit PE-100
PIONEER
$13.99Freeze plugs are critical engine components that prevent catastrophic coolant system failure—a single compromised plug can lead to costly internal damage. The PE-100 kit addresses this vulnerability with a complete set of OEM-specification plugs...PIOPE100- SKU:
- PIOPE100
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- MFG Part #:
- PE-100
$13.99 -
Mr. Gasket SB Chevy Head Dowels (2 Pieces) 4375
MR. GASKET
$13.22Cylinder head dowels are critical alignment components that ensure precise positioning of your cylinder head on the block, preventing gasket misalignment and potential coolant leaks. Mr. Gasket's steel dowels provide the repeatability and accuracy that...MRG4375- SKU:
- MRG4375
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 4375
$13.22 -
Moroso Bellhousing Dowel.014off 37936
MOROSO
$29.99Bellhousing alignment is critical for smooth power delivery and long transmission life, especially in high-performance applications where engine torque can expose even minor misalignment issues. The Moroso Bellhousing Dowel provides precision locating...MOR37936- SKU:
- MOR37936
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MFG Part #:
- 37936
$29.99 -
Moroso Bellhousing Dowel.007off 37934
MOROSO
$29.99Precision bellhousing alignment is non-negotiable when you're building a high-performance engine combination. Moroso's .007" offset dowel pins ensure repeatable, exact concentricity between your engine block and transmission—eliminating runout that can...MOR37934- SKU:
- MOR37934
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MFG Part #:
- 37934
$29.99 -
Moroso Bellhousing Dowel solid straight 37932
MOROSO
$23.99Bellhousing dowel pins are critical alignment components that prevent bell housing misalignment during high-load engine runs—a common failure point in forced induction and high-horsepower applications. Moroso's solid steel dowels provide the extra length...MOR37932- SKU:
- MOR37932
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- MFG Part #:
- 37932
$23.99 -
Moroso Sbc Offset Head Dowels 37930
MOROSO
$23.99Cylinder head alignment is critical for engine sealing and performance—even small inconsistencies can lead to gasket failures and compression loss. The Moroso SBC Offset Head Dowels correct common manufacturing tolerances in Small Block Chevy and Mopar...MOR37930- SKU:
- MOR37930
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- 37930
$23.99 -
Moroso Sbc Offset Head Dowels 37920
MOROSO
$23.99Cylinder head dowel alignment is critical to engine longevity and performance—even minor misalignment can cause gasket failure, compression loss, and catastrophic engine damage. The Moroso SBC Offset Head Dowels correct factory tolerances with precision...MOR37920- SKU:
- MOR37920
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- 37920
$23.99 -
Moroso Sb Chevy Deck Plug Kit 37800
MOROSO
$24.99Deck plugs are essential for sealing unused ports on your Small Block Chevy engine block, preventing coolant leaks and maintaining system integrity during high-performance operation. This Moroso kit provides all six plugs needed for a complete seal,...MOR37800- SKU:
- MOR37800
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MFG Part #:
- 37800
$24.99
