Racing Engine Blocks & Components
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- Milodon®Front Main Cap (11501)Front Main Cap (11501) by Milodon®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality...Painstakingly designed to meet your racing needsState-of-the-art manufacturing technology$129.15
- Milodon®Main Caps (11525)Main Caps (11525) by Milodon®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an...Painstakingly designed to meet your racing needsState-of-the-art manufacturing technology$536.31
- Milodon®Main Caps (11190)Main Caps (11190) by Milodon®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an...Painstakingly designed to meet your racing needsState-of-the-art manufacturing technology$293.43
- Milodon®Main Caps (11520)Main Caps (11520) by Milodon®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an...Painstakingly designed to meet your racing needsState-of-the-art manufacturing technology$536.31
- PRW®Billet Steel Main Caps (1793891)Billet Steel Main Caps (1793891) by PRW®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$14.83
- PRW®Billet Steel Main Caps (1793501)Billet Steel Main Caps (1793501) by PRW®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$14.83
- PRW®Billet Steel Main Caps (1745501)Billet Steel Main Caps (1745501) by PRW®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$263.56
- PRW®Billet Steel Main Caps (Chevy Big Block V8) (1794541)Billet Steel Main Caps by PRW®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit for a...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$14.83
- PRW®Billet Steel Main Girdle Kit (0940800)Billet Steel Main Girdle Kit (0940800) by PRW®. PRW Billet Steel Main Girdles are engineered to help eliminate theblock flex andcap walk that occurs as a result of stress while under extreme loads, or during nitrous oxide power bursts...Helps eliminate cap walk and block flexManufactured from premium quality 1045 billet steel$236.87
- PRW®Billet Steel Main Girdle Kit (0955700)Billet Steel Main Girdle Kit (0955700) by PRW®. PRW Billet Steel Main Girdles are engineered to help eliminate theblock flex andcap walk that occurs as a result of stress while under extreme loads, or during nitrous oxide power bursts...Helps eliminate cap walk and block flexManufactured from premium quality 1045 billet steel$215.87
- PRW®PQx™ Main Cap Stud Kit (1000313)PQx™ Main Cap Stud Kit (1000313) by PRW®. PRW main girdle stud kits help eliminate main cap walk and also protect the threads in your engine block. The main girdle studs work with the main girdles to help strengthen the foundation for...Made with precision and quality in mindDesigned to meet your specific needs$183.60
- RHS®Billet Steel Main Cap (549100-1)Billet Steel Main Cap (549100-1) by RHS®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect...Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability$122.95
- RHS®Inner Cylinder Sleeve (549104-1)Inner Cylinder Sleeve (549104-1) by RHS®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$81.95
- RHS®Inner Cylinder Sleeve (549103-1)Inner Cylinder Sleeve (549103-1) by RHS®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$80.95
- RHS®Main Cap Fastener (549304-1)Main Cap Fastener (549304-1) by RHS®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit...Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability$6.95
- RHS®Outer Driver Side Cylinder Sleeve (549114-1)Outer Driver Side Cylinder Sleeve (549114-1) by RHS®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$89.95
- RHS®Outer Driver Side Cylinder Sleeve (549113-1)Outer Driver Side Cylinder Sleeve (549113-1) by RHS®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$83.95
- RHS®Outer Passenger Side Cylinder Sleeve (549110-1)Outer Passenger Side Cylinder Sleeve (549110-1) by RHS®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$100.95
- RHS®Outer Passenger Side Cylinder Sleeve (549111-1)Outer Passenger Side Cylinder Sleeve (549111-1) by RHS®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$102.95
- RHS®Side Main Cap Fastener (549305-1)Side Main Cap Fastener (549305-1) by RHS®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a...Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability$6.95
- Racing Power Company®Valley Cover Plate (R5320BK)Valley Cover Plate (R5320BK) by Racing Power Company®. Crafted with expertise and care, this product sports the elaborate design and features unsurpassed quality. It is made using smart materials and leading technological advancements...Elaborately engineered using leading technologySports the refined design and ensures high quality$72.43
- Racing Power Company®Valley Cover Plate (R5310)Valley Cover Plate (R5310) by Racing Power Company®. Crafted with expertise and care, this product sports the elaborate design and features unsurpassed quality. It is made using smart materials and leading technological advancements to...Elaborately engineered using leading technologySports the refined design and ensures high quality$47.41
- Racing Power Company®Valley Cover Plate (R5315BK)Valley Cover Plate (R5315BK) by Racing Power Company®. Crafted with expertise and care, this product sports the elaborate design and features unsurpassed quality. It is made using smart materials and leading technological advancements...Elaborately engineered using leading technologySports the refined design and ensures high quality$72.05
- Racing Power Company®Valley Cover Plate (R5310BK)Valley Cover Plate (R5310BK) by Racing Power Company®. Crafted with expertise and care, this product sports the elaborate design and features unsurpassed quality. It is made using smart materials and leading technological advancements...Elaborately engineered using leading technologySports the refined design and ensures high quality$47.41
- Racing Power Company®Valley Cover Plate (R5315)Valley Cover Plate (R5315) by Racing Power Company®. Crafted with expertise and care, this product sports the elaborate design and features unsurpassed quality. It is made using smart materials and leading technological advancements to...Elaborately engineered using leading technologySports the refined design and ensures high quality$72.05
- Racing Power Company®Valley Cover Plate (R5320)Valley Cover Plate (R5320) by Racing Power Company®. Crafted with expertise and care, this product sports the elaborate design and features unsurpassed quality. It is made using smart materials and leading technological advancements to...Elaborately engineered using leading technologySports the refined design and ensures high quality$70.86
- Replace®383CI Stroker Engine Short Block (SP53)383CI Stroker Engine Short Block (SP53) by Replace®. Designed utilizing the latest technology, this product by Replace features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$4,265.35
- Replace®598 Dart Race Series Engine Short Block (SP45)598 Dart Race Series Engine Short Block (SP45) by Replace®. This bullet proof short block is designed for racing or max effort street build; drive train upgrades may be needed. This short block is built with a mild compression ratio...Reverse engineered to ensure any factory defects are eliminatedDyno proven horsepower gains$7,385.67
- Speedmaster®Engine Block (1-286-015-01)Engine Block (1-286-015-01) by Speedmaster®. The next level of performance is these aluminum Chevy small blocks. Block is ready for the street racer or all out racer with added strength and cubic inches. All the factory flaws redesigned...Ductile iron sleevesExtra thick cylinder walls & decks$2,916.60
- Speedmaster®Engine Block (1-286-014-02)Engine Block (1-286-014-02) by Speedmaster®. The next level of performance is these aluminum Chevy small blocks. Block is ready for the street racer or all out racer with added strength and cubic inches. All the factory flaws redesigned...Ductile iron sleevesExtra thick cylinder walls & decks$3,366.60
An engine block is the base for all major powertrain components including a cylinder head, transmission, etc. Meant to withstand huge thermal and mechanical loads, the blocks are designed according to the expected power, stresses, and durability. Racing engine blocks are designed mainly for those who want to squeeze more horsepower from their vehicles. In general, the main difference between racing motors and their factory counterparts is greater strength, higher performance, ability to work at much higher RPMs, and some specific possibilities you may need to adapt the motor to your requirements.
For instance, you may want to increase the bore diameter, change the stroke length, install roller cam bearings, choose between the wet or dry sump, and so on. While building a racing engine, much attention is devoted to the material; often, it's lightweight and strong aluminum with steel sleeves and main caps. Some manufacturers intentionally leave steel sleeves slightly protruding above the deck of the block, providing a so-called stepped deck option, an alternative to a wire O-ring meant to increase the seal pressure around the cylinder.
Besides, racing engine blocks are designed and built according to the highest precision requirements, using the most accurate honing and controlling clearances in all crucial areas. Also, aftermarket manufacturers find and eliminate pretty much any potential weak points of the stock motors, which usually appear when the factory powerplant is heavily loaded and/or operates at high RPM. A performance crankshaft is made ideally balanced, oil passages and holes are reconsidered to provide sufficient lubrication in all working modes, the piston design can vary to match specific applications, and so on. There are many methods developed in the racing environment throughout the years, and our online store is ready to supply you with high-quality racing engine blocks and related components using the finest technical solutions.