Engines, Bare Blocks
Circle Track Engines Bare Blocks at JJ Motorsports
Bare engine blocks are the perfect starting point for building a custom power unit tailored to your car’s needs. Designed with durability and precision, these blocks support high-power outputs for late models, modifieds, and street stocks. Combine them with additional engine-building essentials to construct a race-ready engine with confidence.
Shop trusted brands like Chevrolet Performance for LSX cast iron blocks and Dart for SHP iron options. Explore related categories such as Circle Track Engines Blocks and Components for additional parts or Circle Track Engines and Components for complete upgrades.
Top Circle Track Engines Bare Blocks
- Chevrolet Performance Chevy Performance LSX Cast Iron Block - 4.185 Bore Finished 19417353 – 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. Engine for high-power outputs in late models, modifieds, and street stocks.
- Chevrolet Performance Chevy Performance LSX Cast Iron Block - Semi Finish 9.260 DH 19417351 – LSX Bowtie Bare Block, 3.880 in Bore, 9.260 Deck, Iron, Orange Powder Coat, GM LS-Series, Each. Designed for maximum value and high performance in GM LS-Series engines.
- Dart SBF SHP Iron Block 4.000 Bore 9.500 DH 31375135 – SHP Bare Block, 4 in Bore, 9.500 Deck, 1-Piece Seal, Iron, Small Block Ford, Each. Built for durability and precision in circle track 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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Chevrolet Performance Chevy Performance LSX Cast Iron Block - 4.185 Bore Finished 19417353
CHEVROLET PERFORMANCE
$5,573.06Engine 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 Chevrolet Performance 19260099 - LSX Finished and Honed 4.185” Bowtie Bare Block The LSX Bowtie Engine Block showcases three major...GMP19417353- SKU:
- GMP19417353
- Availability:
- Ships Same Business Day
- Weight:
- 268.00 LBS
$5,573.06 -
Chevrolet Performance Chevy Performance LSX Cast Iron Block - Semi Finish 9.260 DH 19417351
CHEVROLET PERFORMANCE
MSRP: $5,038.95$5,038.94Engine LSX Bowtie Bare Block 3.880 in Bore 9.260 Deck Iron Orange Powder Coat GM LS-Series Each The next generation of high performance GM blocks has been released! It's the amazing LSX bowtie block, designed from the ground up to deliver maximum value...GMP19417351- SKU:
- GMP19417351
- Availability:
- Ships Same Business Day
- Weight:
- 250.00 LBS
MSRP: $5,038.95$5,038.94 -
Dart SBF SHP Iron Block 4.000 Bore 9.500 DH 31375135
DART
$2,699.99EngineSHPBare Block4 in Bore9.500 Deck1-Piece SealIronSmall Block FordEachDRT31375135- SKU:
- DRT31375135
- Availability:
- Ships Same Business Day
- Weight:
- 238.00 LBS
$2,699.99 -
Dart SBC Little M Iron Block 9.025 4.125/400 31192211
DART
$3,799.99Engine Little M Bare Block 4.125 in Bore 9.025 Deck 400 Main 4-Bolt Main 2 Piece Seal Iron Small Block Chevy Each Build a better Bowtie on a budget with Dart's Little M small block Chevy cast iron bare blocks--they offer more than just standard small...DRT31192211- SKU:
- DRT31192211
- Availability:
- Ships Same Business Day
- Weight:
- 203.00 LBS
$3,799.99 -
Dart SBC Little M Iron Block 9.025 4.125/350 31191211
DART
$3,799.99Engine Little M Bare Block 4.125 in Bore 9.025 Deck 350 Main 4-Bolt Main 2 Piece Seal Iron Small Block Chevy Each Build a better Bowtie on a budget with Dart's Little M small block Chevy cast iron bare blocks--they offer more than just standard small...DRT31191211- SKU:
- DRT31191211
- Availability:
- Ships Same Business Day
- Weight:
- 180.00 LBS
$3,799.99 -
Dart SBC Little M Iron Block 9.025 4.000/350 31191111
DART
$3,799.99Engine Little M Bare Block 4.000 in Bore 9.025 Deck 350 Main 4-Bolt Main 2 Piece Seal Iron Small Block Chevy Each Build a better Bowtie on a budget with Dart's Little M small block Chevy cast iron bare blocks--they offer more than just standard small...DRT31191111- SKU:
- DRT31191111
- Availability:
- Ships Same Business Day
- Weight:
- 182.00 LBS
$3,799.99 -
Dart SBC Little M Iron Block 9.025 4.125/400 31182211
DART
$3,999.99EngineLittle MBare Block4.125 in Bore9.025 Deck400 Main4-Bolt Main2 Piece SealIronSmall Block ChevyEachDRT31182211- SKU:
- DRT31182211
- Availability:
- Ships Same Business Day
- Weight:
- 238.00 LBS
$3,999.99 -
Dart SBC Little M Iron Block 9.025 4.000/350 31181111LT
DART
$6,934.99Designed for high-performance applications Features a robust Little M design for enhanced durability Bare block construction allows for custom builds 4.000-inch bore for optimal airflow and performance 9.025-inch deck height for improved engine...DRT31181111LT- SKU:
- DRT31181111LT
- Availability:
- Ships Same Business Day
- Weight:
- 230.00 LBS
$6,934.99 -
Dart LS Iron Block - 9.240/ 4.125 w/Steel Main Caps 31837211
DART
$4,499.99LS Iron Block - 9.240/ 4.125 w/Steel Main Caps Engine LS Next Bare Block 4.125 in Bore 9.240 Deck 4-Bolt Mains 1 Piece Seal 0.375 in Extended Cylinders Iron GM LS-Series Each Designed from a clean slate approach the LS Next Iron block has addressed the...DRT31837211- SKU:
- DRT31837211
- Availability:
- Ships Same Business Day
- Weight:
- 238.00 LBS
- MFG Part #:
- 31837211
$4,499.99 -
Dart SBC Pro SHP Iron Block 9.025 4.125/400 31162212
DART
$3,799.99SBC Pro SHP Iron Block 9.025 4.125/400EngineSHP ProBare Block4.125 in Bore9.025 Deck400 Main4-Bolt Mains2 Piece SealBBC Camshaft BoreIronSmall Block ChevyEachDRT31162212- SKU:
- DRT31162212
- Availability:
- Ships Same Business Day
- Weight:
- 186.00 LBS
- MFG Part #:
- 31162212
$3,799.99 -
Chevrolet Performance Chevy Performance LSX Cast Iron Block - 4.065 Bore Finished 19417352
CHEVROLET PERFORMANCE
MSRP: $5,565.20$5,565.19Engine LSX Bare Block 4.065 in Bore 9.240 Deck 6-Bolt Main 1-Piece Seal 6-Bolt Head Iron Orange GM LS-Series Each Chevrolet Performance LSX Bowtie engine blocks are designed for the advanced competition engine builder. They feature Siamese cylinder...GMP19417352- SKU:
- GMP19417352
- Availability:
- Ships Same Business Day
- Weight:
- 252.00 LBS
MSRP: $5,565.20$5,565.19Qty in Cart: 0Quantity:Price:MSRP: $5,565.20$5,565.19Subtotal: -
Chevrolet Performance Alm Engine Block - Bare 6.2L LSA 12673476
CHEVROLET PERFORMANCE
$3,812.04Engine6.2L LSABare Block4.065 in Bore9.240 in Deck1-Piece SealAluminumGM LS-SeriesEachGMP12673476- SKU:
- GMP12673476
- Availability:
- Ships Same Business Day
- Weight:
- 110.00 LBS
$3,812.04Qty in Cart: 0Quantity:Price:$3,812.04Subtotal: -
Dart SBF SHP Iron Block 4.125 Bore 9.500 DH 31375235
DART
$2,699.99EngineSHPBare Block4.125 in Bore9.500 Deck1-Piece SealIronSmall Block FordEachDRT31375235- SKU:
- DRT31375235
- Availability:
- Ships Same Business Day
- Weight:
- 204.20 LBS
$2,699.99Qty in Cart: 0Quantity:Price:$2,699.99Subtotal: -
Dart SBF SHP Iron Block 4.125 Bore 8.200 DH 31374275
DART
$2,699.99EngineSHPBare Block4.125 in Bore8.200 Deck4-Bolt Main1-Piece SealIronSmall Block FordEachDRT31374275- SKU:
- DRT31374275
- Availability:
- Ships Same Business Day
- Weight:
- 150.00 LBS
$2,699.99Qty in Cart: 0Quantity:Price:$2,699.99Subtotal: -
Dart SBF SHP Iron Block 4.000 Bore 8.200 DH 31374175
DART
$2,699.99EngineSHPBare Block4 in Bore8.200 Deck4-Bolt Main1-Piece SealIronSmall Block FordEachDRT31374175- SKU:
- DRT31374175
- Availability:
- Ships Same Business Day
- Weight:
- 250.00 LBS
$2,699.99Qty in Cart: 0Quantity:Price:$2,699.99Subtotal: -
Dart SBC Little M Block 4.125 Bore 9.325 DH .391 RC 31182225
DART
$3,999.99EngineLittle MBare Block4.125 in Bore9.325 in Deck4-Bolt Main2-Piece Seal0.391 in Raised Cam LocationIronSmall Block ChevyEachDRT31182225- SKU:
- DRT31182225
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$3,999.99Qty in Cart: 0Quantity:Price:$3,999.99Subtotal: -
Dart SBC Iron Little M Block 4.125 Bore 9.025 DH 31181215
DART
$3,999.99EngineLittle MBare Block4.125 in Bore9.025 in Deck4-Bolt Main2-Piece Seal0.391 in Raised Cam LocationIronSmall Block ChevyEachDRT31181215- SKU:
- DRT31181215
- Availability:
- Ships Same Business Day
- Weight:
- 210.00 LBS
$3,999.99Qty in Cart: 0Quantity:Price:$3,999.99Subtotal: -
LS Aluminum Block - 4.120 Bore 9.240 D/H 54903U
RACING HEAD SERVICE
$6,575.95EngineBare Block4.120 in Bore9.250 DeckStandard Main6-Bolt Mains1 Piece Seal6-Bolt HeadAluminumNaturalGM LS-SeriesEachRHS54903U- SKU:
- RHS54903U
- Availability:
- Ships Same Business Day
- Weight:
- 140.00 LBS
$6,575.95Qty in Cart: 0Quantity:Price:$6,575.95Subtotal: -
Dart LS SHP Pro Block 4.125 Bore 9.240 DH 31867212
DART
$4,699.99Engine SHP Bare Block 4.125 in Bore 9.240 Deck 4-Bolt 1 Piece Seal Iron GM LS-Series Each Dart Machinery continues the evolution of the LS Next platform by releasing the SHP LS Next PRO block! Designed for high performance applications, the SHP LS NEXT...DRT31867212- SKU:
- DRT31867212
- Availability:
- Ships Same Business Day
- Weight:
- 240.00 LBS
$4,699.99Qty in Cart: 0Quantity:Price:$4,699.99Subtotal: -
Dart SBC Little M Iron Block 9.025 4.125/350 31181211
DART
$3,999.99EngineLittle MBare Block4.125 in Bore9.025 Deck350 Main4-Bolt Main2 Piece SealIronSmall Block ChevyEachDRT31181211- SKU:
- DRT31181211
- Availability:
- Ships Same Business Day
- Weight:
- 255.00 LBS
$3,999.99Qty in Cart: 0Quantity:Price:$3,999.99Subtotal:
