
The Gen V 454 cid big block Chevy engine is a popular choice for those seeking a powerful and reliable engine. With its large displacement, it was commonly used in a variety of vehicles, from muscle cars to trucks and even marine craft. When it comes to stroking the Gen V 454, there are a few factors to consider.
The Gen V 454 engine had a bore of 4.25 inches and a stroke of 4 inches. To increase the displacement, you can bore out the cylinders and install a stroker crankshaft. However, it is important to note that the safe limit for boring a production big block engine is typically around 0.060 inches. Racing blocks can sometimes be bored up to 0.120 inches, but this is considered risky and may require additional testing to ensure the structural integrity of the cylinder walls.
By installing a stroker crankshaft with a longer stroke, you can further increase the displacement. A popular combination is to use a 4.25-inch stroker crank, which can result in a displacement of around 510 cubic inches. However, it is important to consult with a professional or a machine shop to ensure that the chosen bore and stroke combination is safe for your specific engine and application.
In conclusion, the Gen V 454 offers a great platform for building a powerful engine, and with the right combination of boring and stroking, you can significantly increase its displacement and horsepower. However, it is crucial to prioritize the engine's reliability and longevity by staying within the safe limits and using high-quality components.
Characteristics | Values |
---|---|
Displacement | 7.4L |
Engine Type | Big-block |
Generation | Gen V |
Horsepower | 1,800 |
Bore | 4.25-inch |
Stroke | 4.00-inch |
What You'll Learn
- The Gen V 454 cid big block Chevy engine build can be turbocharged to produce 1,800 horsepower
- The Gen V 454 engine was introduced in 1991 and featured a one-piece rear main seal, four-bolt main caps, and cast aluminium valve covers
- The Gen V 454 engine was rated at 230 horsepower and 380 lb-ft torque and was used in GM's 2500 and 3500 pickups
- The Gen V 454 engine can be built on a budget by reusing stock parts and focusing on high-flow induction and performance camshafts
- The Gen V 454 engine can be stroked out to 632 cubic inches to produce 815 horsepower
The Gen V 454 cid big block Chevy engine build can be turbocharged to produce 1,800 horsepower
Gomez started with a factory Gen V 454 cid block and found various parts on eBay and automotive forums to build out the engine. He used a standard stroke/journal Eagle crankshaft, Manley discontinued aluminum rods, and custom-bore pistons. He also got some heads from Speedmaster79 and filled them with PAC valve springs and Ferrea heavy-duty oversized valves.
Gomez then milled the block to get the piston closer to the deck and found a used solid roller camshaft from Crane Cams, COMP Cams 'gold' rockers, a Jomar stud girdle, and Crower lifters. He also got custom tapered 7/16ths pushrods from Smith Brothers, a single-plane manifold, and a 4500 series throttle body from Speedmaster79.
To finish the build, Gomez added a 112mm Precision turbo, a custom-built air-to-water intercooler, an electric pump fuel system, and a Haltech 2500 computer. This setup produces 1,800 horsepower on 30 psi of boost and keeps the air/fuel ratio at 11.3 on e85. All that power goes through an 8.2 10-bolt rear end with 33-spline axles and a Strange spool.
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The Gen V 454 engine was introduced in 1991 and featured a one-piece rear main seal, four-bolt main caps, and cast aluminium valve covers
The Gen V 454 engine was introduced in 1991 and featured several design improvements over its predecessor, the Mark IV 454 engine. One of the key enhancements was the introduction of a one-piece rear main seal, which provided better gasket sealing and reduced the risk of leaks. This was a significant upgrade compared to the Mark IV, which used a two-bolt or four-bolt main seal configuration, depending on the application.
Another important feature of the Gen V 454 was the use of four-bolt main caps across all five main caps. This design choice improved the engine's structural integrity and provided a more robust platform for higher performance applications. Additionally, the Gen V 454 engines featured cast aluminium valve covers, which not only enhanced the engine's aesthetic appeal but also improved gasket sealing.
The Gen V 454 engines also underwent several updates in the valvetrain, including the use of a hydraulic flat tappet cam and non-adjustable bolt-down rocker arms. These changes aimed to optimise performance and reliability. However, it is worth noting that the Gen V did not include roller lifters or cam setup, which would be introduced in the subsequent Gen VI big block engines.
The Gen V 454 engine, also known as the L19 engine, was utilised in various GM vehicles, including their 2500 and 3500 pickup trucks. It was in production from 1991 to 1995 and was rated at 230 horsepower and 380 lb-ft of torque. Despite being superseded by the Gen VI in 1996, the Gen V remains a popular choice for engine builders due to its performance potential and budget-friendly nature.
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The Gen V 454 engine was rated at 230 horsepower and 380 lb-ft torque and was used in GM's 2500 and 3500 pickups
The Gen V 454 engine was introduced in 1991 as an update to the previous Mark IV 454 engine. The Gen V engine featured a series of improvements, including a one-piece rear main seal, four-bolt main caps, a hydraulic flat tappet cam, and cast aluminium valve and timing covers for better gasket sealing. The valvetrain was also updated to a non-adjustable design. These changes resulted in an engine that was more powerful and efficient than its predecessor.
The Gen V 454 engine was rated at 230 horsepower and 380 lb-ft of torque, which was a slight decrease from the previous Mark IV version. However, this engine was still a powerful option for GM's 2500 and 3500 pickups, offering ample power and torque for towing and hauling heavy loads. The Gen V 454 was also famously used in the 1991-1993 454SS pickup model, a half-ton truck that borrowed the 454 V8 from the heavy-duty lineup.
In terms of build and specifications, the Gen V 454 featured a hydraulic flat tappet cam and non-adjustable bolt-down rocker arms. The engine block casting was updated with a one-piece rear main seal and four-bolt main caps, improving the block's integrity. The main oil gallery was relocated, and the mechanical fuel pump mount was removed. Cast aluminium valve and timing covers were used, providing better gasket sealing.
The Gen V 454 engine was a popular choice for those seeking a powerful and reliable engine for their GM pickups. With its high torque output and ample horsepower, it was well-suited for towing and hauling applications. The engine's reputation for durability and performance made it a favourite among truck enthusiasts, ensuring its place in GM's lineup for several years.
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The Gen V 454 engine can be built on a budget by reusing stock parts and focusing on high-flow induction and performance camshafts
One of the most important aspects of building a high-performance engine on a budget is to find ways to reuse stock parts and save money where possible. This can involve scouring junkyards, eBay, and automotive forums for used parts that can be refurbished and reused. For example, Joshua Gomez, an experienced engine builder, started his Gen V 454 build with a factory Gen V 454 block and managed to find various used parts online to complete his build.
When it comes to the Gen V 454 engine, there are a few key areas to focus on to maximize performance while keeping costs down. Firstly, high-flow induction is essential. This involves improving the airflow into the engine to increase power. This can be achieved through the use of larger intake valves, high-flow cylinder heads, and a performance intake manifold. Another critical aspect is the camshaft. A performance camshaft with the right specifications for your particular engine build will help to ensure optimal power output and torque.
When building a Gen V 454 engine on a budget, it is also important to prioritize your spending. While you may want to upgrade every component, it is often more cost-effective to focus on the parts that will have the biggest impact on performance. For example, reusing the stock "tin," V-belt accessory drive, and other non-essential parts can free up money in your budget to spend on high-flow induction and a performance camshaft.
Additionally, it is worth considering the condition of the engine you are starting with. If you are starting with a used engine, it may be necessary to perform some basic maintenance and upgrades to ensure the engine is in good working order. This could include tasks such as honing the cylinders, installing new rings, and painting the block. While these tasks may add to the overall cost, they are essential to ensuring the reliability and performance of your engine.
Finally, it is worth noting that building an engine on a budget often requires a balance between performance and cost. While you may not be able to achieve the absolute maximum power output, a well-built Gen V 454 engine with high-flow induction and a performance camshaft can still provide impressive results without breaking the bank.
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The Gen V 454 engine can be stroked out to 632 cubic inches to produce 815 horsepower
The process of stroking out an engine involves increasing the displacement of the engine by making modifications to the crankshaft and connecting rods. In the case of the Gen V 454 engine, this involves using a longer stroke crankshaft and connecting rods with a larger diameter. This allows the pistons to travel a greater distance within the cylinder, increasing the engine's displacement.
The benefits of stroking out an engine include increased torque and power output, as well as improved airflow and breathing capabilities. The larger bore and stroke allow for larger valves and ports, which can improve the engine's breathing and airflow efficiency. This, in turn, can lead to increased horsepower and torque output.
However, stroking out an engine also has its drawbacks. The longer stroke can increase the friction and drag created by the piston rings against the cylinder wall, reducing the engine's efficiency. Additionally, the longer stroke can also increase the weight of the rotating assembly, which can affect the engine's rev capability and acceleration.
Nevertheless, for enthusiasts craving the pull of a Mark IV-style rat engine, stroking out a Gen V 454 to 632 cubic inches is a viable option to consider. It allows for the retention of the classic big-block Chevy look while providing a significant increase in horsepower and torque output.
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Frequently asked questions
The maximum bore for a Gen V 454 is 4.25 inches. This is the same bore size as the 427 engine, but the 454 has a longer 4-inch stroke.
A Gen V 454 build can be stroked to around 505 cubic inches with a 4.350-inch bore and a 4.250-inch stroke. This is a significant increase from the standard 454 cubic inches.
Stroking a Gen V 454 increases the engine's displacement, resulting in more power. Longer strokes deliver bigger cubes and more torque, which is ideal for applications that require high torque, such as towing or racing.
While stroking a Gen V 454 can increase power, it is important to consider the limitations. Longer strokes can lead to a parasitic energy penalty, reducing high-rpm power. Additionally, there is a limit to the stock block's bore capability, and excessive stroking may require a custom build.