Racing Engine Blocks & Components
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- Mr. Gasket®Valley Cover Gasket (61021G)Valley Cover Gasket (61021G) by Mr. Gasket®. 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 deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$49.95
- Mr. Gasket®Valley Cover Gasket (4798G)Valley Cover Gasket (4798G) by Mr. Gasket®. 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 deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$13.72
- PCE®Bare Iron Engine Block (Chevy Big Block V8) (PCE286.1057)Bare Iron Engine Block by PCE®. Build your dream engine The next level of performance is these cast iron Chevy Big Blocks. Designed to look standard under your bonnet, and work with stock components. Block is ready for the street racer...Expertly Crafted from the highest grade materialsDesigned with breakthrough technology$2,316.60
- PRW®3 Each Main Cap (1745402)3 Each Main Cap (1745402) by PRW®. PRW Billet Steel Main Caps raise the bar in the high performance industry. The combination of top quality and reasonable pricing sets new standards. They know that when you receive your new PRW...CNC machinedManufactured from 1045 low carbon steel$210.76
- PRW®Billet Steel Main Girdle Kit (0945511)Billet Steel Main Girdle Kit (0945511) 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®Billet Steel Main Girdle Kit (0935000)Billet Steel Main Girdle Kit (0935000) 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®Billet Steel Main Girdle Kit (0940311)Billet Steel Main Girdle Kit (0940311) 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®Billet Steel Main Girdle Kit (0940000)Billet Steel Main Girdle Kit (0940000) 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$192.87
- PRW®Billet Steel Main Girdle Kit (Chevy Big Block V8) (0945400)Billet Steel Main Girdle Kit 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 in high...Helps eliminate cap walk and block flexManufactured from premium quality 1045 billet steel$215.87
- PRW®Billet Steel Main Girdle Kit (Ford Big Block V8) (0946000)Billet Steel Main Girdle Kit 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 in high...Helps eliminate cap walk and block flexManufactured from premium quality 1045 billet steel$215.87
- PRW®Main Cap (1730201)Main Cap (1730201) by PRW®. PRW Billet Steel Main Caps raise the bar in the high performance industry. The combination of top quality and reasonable pricing sets new standards. They know that when you receive your new PRW performance...CNC machinedManufactured from 1045 low carbon steel$184.36
- PRW®Main Cap (1740002)Main Cap (1740002) by PRW®. PRW Billet Steel Main Caps raise the bar in the high performance industry. The combination of top quality and reasonable pricing sets new standards. They know that when you receive your new PRW performance...CNC machinedManufactured from 1045 low carbon steel$175.56
- PRW®Main Cap (1745403)Main Cap (1745403) by PRW®. PRW Billet Steel Main Caps raise the bar in the high performance industry. The combination of top quality and reasonable pricing sets new standards. They know that when you receive your new PRW performance...CNC machinedManufactured from 1045 low carbon steel$237.16
- PRW®Main Cap (1735003)Main Cap (1735003) by PRW®. PRW Billet Steel Main Caps raise the bar in the high performance industry. The combination of top quality and reasonable pricing sets new standards. They know that when you receive your new PRW performance...CNC machinedManufactured from 1045 low carbon steel$175.56
- PRW®Main Cap (1735002)Main Cap (1735002) by PRW®. PRW Billet Steel Main Caps raise the bar in the high performance industry. The combination of top quality and reasonable pricing sets new standards. They know that when you receive your new PRW performance...CNC machinedManufactured from 1045 low carbon steel$201.96
- PRW®Main Cap (1735001)Main Cap (1735001) by PRW®. 4 Bolt Replacement with Flat Surface Mount. PRW Billet Steel Main Caps raise the bar in the high performance industry. The combination of top quality and reasonable pricing sets new standards. They know that...CNC machinedManufactured from 1045 low carbon steel$193.16
- PRW®Main Girdle (0934700)Main Girdle (0934700) 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 in high...Helps eliminate cap walk and block flexManufactured from premium quality 1045 billet steel$192.87
- PRW®Main Girdle (Ford FE V8) (0944800)Main Girdle 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 in high performance engines....Helps eliminate cap walk and block flexManufactured from premium quality 1045 billet steel$215.87
- RHS®12-Point Main Cap Nut (549303-1)12-Point Main Cap Nut (549303-1) 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$8.95
- RHS®LS Block Torque Plate (549150-1)LS Block Torque Plate (549150-1) 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$683.57
- RHS®LS Block Torque Plate Set (549150)LS Block Torque Plate Set (549150) 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 deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$1,162.88
- RHS®LS Race Bare Engine Block (54902)LS Race Bare Engine Block (54902) by RHS®. Engineers at RHS® have designed a high-performance aluminum engine block for GM LS applications to meet the needs of race and street performance engine builders alike. Additionally, this...Rolled threads on all threaded holes for added strengthGen III/Gen IV compliant with race mounts for Gen I, Gen II, Gen III & Gen IV engines$5,268.60
- RHS®LS Race Bare Engine Block (54902U)LS Race Bare Engine Block (54902U) by RHS®. Engineers at RHS® have designed a high-performance aluminum engine block for GM LS applications to meet the needs of race and street performance engine builders alike. Additionally, this...Rolled threads on all threaded holes for added strengthGen III/Gen IV compliant with race mounts for Gen I, Gen II, Gen III & Gen IV engines$5,165.38
- RHS®LS Race Bare Engine Block (54903)LS Race Bare Engine Block (54903) by RHS®. Engineers at RHS® have designed a high-performance aluminum engine block for GM LS applications to meet the needs of race and street performance engine builders alike. Additionally, this...Rolled threads on all threaded holes for added strengthGen III/Gen IV compliant with race mounts for Gen I, Gen II, Gen III & Gen IV engines$5,268.60
- RHS®LS Race Bare Engine Block (54904)LS Race Bare Engine Block (54904) by RHS®. Engineers at RHS® have designed a high-performance aluminum engine block for GM LS applications to meet the needs of race and street performance engine builders alike. Additionally, this...Rolled threads on all threaded holes for added strengthGen III/Gen IV compliant with race mounts for Gen I, Gen II, Gen III & Gen IV engines$5,165.38
- RHS®LS Race Bare Engine Block (54905)LS Race Bare Engine Block (54905) by RHS®. Engineers at RHS® have designed a high-performance aluminum engine block for GM LS applications to meet the needs of race and street performance engine builders alike. Additionally, this...Rolled threads on all threaded holes for added strengthGen III/Gen IV compliant with race mounts for Gen I, Gen II, Gen III & Gen IV engines$5,165.38
- RHS®LS Race Bare Engine Block (54906)LS Race Bare Engine Block (54906) by RHS®. Engineers at RHS® have designed a high-performance aluminum engine block for GM LS applications to meet the needs of race and street performance engine builders alike. Additionally, this...Rolled threads on all threaded holes for added strengthGen III/Gen IV compliant with race mounts for Gen I, Gen II, Gen III & Gen IV engines$5,268.60
- RHS®LS Race Bare Engine Block (54906U)LS Race Bare Engine Block (54906U) by RHS®. Engineers at RHS® have designed a high-performance aluminum engine block for GM LS applications to meet the needs of race and street performance engine builders alike. Additionally, this...Rolled threads on all threaded holes for added strengthGen III/Gen IV compliant with race mounts for Gen I, Gen II, Gen III & Gen IV engines$5,165.38
- RHS®LS Race Bare Engine Block (54900)LS Race Bare Engine Block (54900) by RHS®. Engineers at RHS® have designed a high-performance aluminum engine block for GM LS applications to meet the needs of race and street performance engine builders alike. Additionally, this...Rolled threads on all threaded holes for added strengthGen III/Gen IV compliant with race mounts for Gen I, Gen II, Gen III & Gen IV engines$5,268.60
- RHS®LS Race Bare Engine Block (54900U)LS Race Bare Engine Block (54900U) by RHS®. Engineers at RHS® have designed a high-performance aluminum engine block for GM LS applications to meet the needs of race and street performance engine builders alike. Additionally, this...Rolled threads on all threaded holes for added strengthGen III/Gen IV compliant with race mounts for Gen I, Gen II, Gen III & Gen IV engines$5,165.38
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.