Jeep wrangler 350 conversion kit – Unleash the inner beast of your Jeep Wrangler with the 350 conversion kit! This comprehensive guide dives deep into the world of powerful upgrades, exploring everything from engine specifications and modifications to the intricate details of transmission and drivetrain components. Imagine the roar of a 350 cubic inch small block Chevrolet V8 under the hood, transforming your off-road adventure into a thrilling experience.
Prepare to embark on a journey of mechanical mastery and discover the perfect match for your Jeep’s newfound power.
This detailed guide explores the critical steps in converting your Jeep Wrangler to a 350-powered machine. From the initial concept of a 350 conversion kit to the installation and maintenance procedures, we cover it all. We’ll examine the various components involved, provide insightful comparisons of different options, and offer practical advice on how to achieve optimal performance. Prepare to be amazed by the transformative potential of this conversion!
Introduction to Jeep Wrangler 350 Conversion Kits
Unleashing the beast within your Jeep Wrangler is easier than ever with a 350 conversion kit. These kits aren’t just about swapping engines; they’re about unlocking a whole new level of capability and performance. From off-road adventures to weekend excursions, a 350 conversion transforms your Wrangler into a formidable machine.This upgrade dramatically enhances your Jeep’s power and torque output, significantly increasing its towing and hauling capacity.
The 350 engine, known for its robust design, is a popular choice for enthusiasts seeking enhanced off-road prowess. This conversion provides a tangible improvement in the overall driving experience.
Overview of the Conversion Kit Concept
The 350 conversion kit is a comprehensive package designed to seamlessly integrate a 350 cubic inch small-block Chevy engine into your Jeep Wrangler. This replaces the existing engine, and the conversion kit handles the necessary modifications for a smooth and reliable operation. It’s a popular upgrade for those wanting to substantially increase their Wrangler’s performance.
Purpose and Benefits of the Conversion
The primary purpose of a 350 conversion kit is to upgrade the engine of a Jeep Wrangler. This results in a significant power boost, enhanced towing capacity, and improved overall driving experience. Many enthusiasts appreciate the improved acceleration and the ability to tackle challenging terrains. The reliability of the 350 engine is also a strong selling point. The enhanced performance also translates to increased capability, which is a primary motivator for owners.
Components of a Typical Conversion Kit
A comprehensive 350 conversion kit typically includes the following components:
- The 350 cubic inch small-block Chevy engine, meticulously chosen for its reliability and performance.
- A complete engine mounting and supporting system, designed to seamlessly integrate with your Jeep’s frame and suspension.
- A custom transmission, tailored for optimal performance with the 350 engine, ensuring smooth gear shifts and optimal power delivery.
- Engine management systems and wiring harnesses, crucial for ensuring compatibility and proper functionality.
- Exhaust and intake systems, designed for efficient airflow and optimal performance.
- A variety of accessories such as fuel pumps, water pumps, and other necessary components.
These components, when carefully chosen and installed, deliver a seamless transition to the enhanced performance of the 350 engine.
Comparison of 350 Conversion Kit Options
The table below provides a comparison of different 350 conversion kit options available in the market, highlighting key aspects like brand, features, and pricing. This comparison is a valuable tool for making an informed decision.
| Brand | Key Features | Pricing (Approximate) |
|---|---|---|
| Company A | Includes a complete engine package, transmission, and wiring harness. Known for robust construction. | $8,000 – $10,000 |
| Company B | Offers a variety of engine options and customizability, allowing for further performance tuning. | $7,000 – $9,500 |
| Company C | Focuses on affordability, providing a reliable conversion kit at a competitive price point. | $6,000 – $8,500 |
Note that pricing can vary based on specific components and customization options.
Engine Specifications and Modifications
The heart of any Jeep Wrangler conversion kit is, of course, the engine. A 350 cubic inch small block Chevrolet V8, a legendary powerplant, is a popular choice for its robust construction, proven reliability, and readily available parts. This engine’s inherent strength and aftermarket support make it a strong candidate for the upgrade.This powerful engine, with its classic design and tuning potential, often requires some modifications to seamlessly integrate into the Wrangler’s frame and existing systems.
Careful planning and execution are crucial for a successful conversion. Understanding the necessary modifications is key to realizing the engine’s full potential within the Jeep’s unique chassis.
Engine Specifications
The 350 cubic inch small block V8 boasts a robust design. Its displacement provides ample torque and power, often sufficient for off-road adventures. This power is paired with a straightforward design that often makes the engine easily maintainable and modifiable. Typical specifications include a specific bore and stroke, cylinder head design, and camshaft profiles, all factors that contribute to the engine’s overall performance.
Modifications for Jeep Wrangler Integration
Several modifications are often necessary to integrate a 350 engine into a Jeep Wrangler. These modifications ensure proper fit, compatibility with existing components, and enhanced performance.
- Engine Mounts and Crossmembers: Custom engine mounts and crossmembers are typically required to secure the engine to the Jeep’s frame. These components must be designed to withstand the engine’s power and torque while maintaining a proper alignment. This allows the engine to function optimally within the Jeep’s chassis.
- Exhaust System: The existing exhaust system may need significant modifications. A new exhaust system that’s specifically designed for the engine’s output and the Wrangler’s chassis design must be considered for proper functionality and to minimize potential exhaust leaks or other complications.
- Wiring Harness: The Wrangler’s existing electrical system may not be compatible with the 350 engine’s components. A custom wiring harness is often required to connect the engine’s electrical components to the Jeep’s system. This is essential to ensure proper ignition and control of the engine.
- Transmission Compatibility: Choosing a compatible transmission is essential. The 350 engine’s torque output may necessitate a transmission with a higher capacity to handle the load and prevent damage. This is vital for smooth operation.
Common Engine Modifications for Optimal Performance
Modifying the engine for enhanced performance is often a key part of the conversion process. These modifications can increase horsepower and torque while maintaining reliability.
| Modification | Description |
|---|---|
| Performance Cam | Replacing the stock camshaft with a high-performance camshaft can significantly improve the engine’s power output and torque. |
| Performance Intake Manifold | A performance intake manifold can improve airflow to the engine, enhancing the overall power and responsiveness. |
| High-Flow Exhaust System | Upgrading to a high-flow exhaust system can reduce backpressure and improve exhaust flow, contributing to improved engine performance. |
| Performance Cylinder Heads | Upgrading to high-performance cylinder heads with optimized combustion chambers and port designs can further increase engine power and efficiency. |
Pros and Cons of a 350 Conversion Kit
A 350 conversion kit offers a range of advantages, but also has some drawbacks to consider.
- Pros: Increased power and torque, improved reliability (depending on the quality of the kit), readily available parts, and the potential for customization are all significant advantages.
- Cons: Increased cost compared to other conversion options, potential for increased complexity in installation and maintenance, and the necessity of specialized tools or expertise can present challenges. Additionally, some modifications may impact the vehicle’s overall weight distribution and handling.
Transmission and Drivetrain Components
The heart of any vehicle’s power delivery system lies in its transmission and drivetrain. A 350 conversion kit isn’t just about swapping the engine; it demands careful consideration of how the new powerplant interacts with the existing drivetrain. This section delves into the crucial choices and modifications required to ensure a smooth and powerful operation.
Transmission Compatibility
The compatibility of different transmissions with a 350 conversion kit depends heavily on the transmission’s design and the output characteristics of the engine. Some transmissions, designed for smaller, less powerful engines, might struggle to handle the torque output of a 350. A transmission capable of withstanding the increased torque is paramount for reliable performance. Furthermore, the transmission’s gear ratios and overall design significantly influence the vehicle’s acceleration, top speed, and fuel efficiency.
Proper matching is crucial.
Drivetrain Modifications
Modifications to the drivetrain are essential to accommodate the 350 engine. This includes, but is not limited to, the driveshaft, the differential, and the transfer case. The increased power output demands a stronger, more robust drivetrain. A properly sized driveshaft ensures consistent torque transmission, while a modified differential allows for the transfer of this added power to the wheels.
A transfer case needs to be compatible with the engine’s power output and torque, ensuring that power is transmitted to all-wheel drive or 4×4 systems as intended.
Selecting the Right Components
Choosing the right transmission and drivetrain components requires careful consideration of several factors. First, determine the desired performance characteristics. High-performance applications might demand a stronger transmission and a custom driveshaft. Second, consider the vehicle’s intended use. Daily commuting will have different needs than off-roading.
Third, budget plays a role. Higher-end components often provide superior performance but come at a higher cost. Ultimately, a balance between performance, budget, and intended use is key.
Transmission Options and Compatibility
This table Artikels various transmission options and their compatibility with the 350 conversion kit. The information provided is based on common applications and modifications. Consult with professionals for specific vehicle setups.
| Transmission Type | Compatibility with 350 Conversion Kit | Considerations |
|---|---|---|
| Automatic (e.g., 700R4, 4L60E) | Potentially compatible with modifications | May require upgrades to handle increased torque. |
| Manual (e.g., T56, TKO) | Potentially compatible with modifications | Requires careful selection of clutch and other components to handle increased torque. |
| Other (e.g., custom builds) | Highly dependent on design and build quality. | Consider expert advice for custom designs. |
Suspension and Steering Modifications
Upgrading your Jeep Wrangler with a 350 engine is a significant undertaking, demanding careful attention to suspension and steering modifications. This robust engine, with its increased torque and horsepower, places a greater load on the vehicle’s suspension. Proper modifications are essential to maintain control, handling, and overall vehicle safety. A well-tuned suspension system, combined with the appropriate steering enhancements, is crucial for optimal performance and longevity.The 350 engine’s increased power translates to greater stress on the suspension components, potentially leading to premature wear and tear, or even failure.
This necessitates upgrading to more robust and durable parts capable of handling the added load and stress. Similarly, the steering system needs to be strengthened to effectively manage the increased power and torque, ensuring predictable response and stability at higher speeds and under heavier loads.
Suspension Upgrades
The enhanced power of the 350 engine necessitates stronger suspension components to handle the increased stress. This includes components like shocks, springs, and control arms. These components must be specifically chosen for their load-bearing capabilities, providing stability and responsiveness. Appropriate upgrades will help to avoid premature wear and tear on the suspension system.
Steering System Modifications
The increased torque from the 350 engine places added strain on the steering system. This requires upgrading to stronger steering components, including the steering box, tie rods, and drag link. Strengthening these components is vital to maintain precision and response, especially at higher speeds and under demanding conditions. A well-maintained steering system is critical to the vehicle’s overall control and safety.
Component Comparison
| Component | Standard Wrangler | 350 Conversion Kit (Recommended) | Explanation |
|---|---|---|---|
| Shocks | Standard shocks | Heavy-duty shocks, with larger diameter and higher spring rates | Enhanced damping and load-handling capabilities for improved control and reduced bouncing. |
| Springs | Standard springs | Higher-rate springs, designed for increased load capacity | Increased stiffness and resilience to support the added weight and power. |
| Control Arms | Standard control arms | Reinforced or upgraded control arms | Enhanced structural integrity to prevent bending or twisting under stress. |
| Steering Box | Standard steering box | Heavy-duty steering box, with increased gear ratio or a reinforced design | Increased durability and responsiveness, ensuring precision and stability at higher speeds. |
| Tie Rods | Standard tie rods | Heavy-duty tie rods | Ensures proper steering input transmission and prevents play or damage under stress. |
| Drag Link | Standard drag link | Reinforced drag link | Maintains proper steering geometry and prevents breakage or loosening. |
Suspension Adjustment Procedure
Proper suspension adjustment is crucial for optimal handling and performance. A skilled mechanic should handle these adjustments, ensuring proper alignment and functionality. There are various adjustment points on different components, which may include shock settings, spring preload, and control arm mounts. Following manufacturer guidelines is essential to maintain the vehicle’s warranty and safety. Improper adjustment can lead to handling issues, reduced comfort, and potential damage to other components.
Wiring and Electrical System Modifications
Transforming your Jeep Wrangler into a 350 powerhouse demands a meticulous approach to the electrical system. The inherent complexities of a high-performance engine, coupled with the Jeep’s existing electrical architecture, necessitate careful consideration and execution. This section details the modifications essential to support the new 350 engine seamlessly.The electrical system upgrade isn’t just about adding components; it’s about creating a robust and reliable system that can handle the increased demands of the 350 engine.
Proper wiring ensures safe operation and prevents potential electrical issues, like short circuits and malfunctions. A well-planned wiring solution ensures that all components function optimally and that the Jeep’s electrical system maintains its integrity.
Custom Wiring Harness Necessity
A standard wiring harness won’t suffice for the 350 conversion. The original wiring system is not designed to handle the electrical demands of the new engine, requiring a custom solution to manage the added complexity. This custom harness ensures proper signal transmission and power distribution to all the components of the 350 engine and its accessories. Furthermore, it mitigates potential conflicts and ensures compatibility with the existing Jeep system.
Wiring the New Engine Components
Wiring the new engine components requires a meticulous approach. Carefully route all wires to avoid potential interference and ensure proper grounding. Pay close attention to the specific wiring diagrams provided with the conversion kit. This detailed process guarantees a safe and efficient power distribution system. Properly connecting the new components’ electrical connections to the custom harness is critical for the engine’s performance and overall vehicle operation.
Ensure every connection is secure, and use appropriate connectors for optimal performance.
Diagram of Wiring and Electrical System Modifications
Visualizing the modifications is crucial for a smooth installation. The diagram below illustrates the necessary connections, highlighting the custom wiring harness’s integration into the Jeep’s existing electrical system. Note the placement of fuses, relays, and other critical components. This schematic visually guides the installation process, minimizing potential errors. It also aids in identifying and rectifying any electrical issues.“`[Imagine a highly detailed diagram here.
The diagram would show the original Jeep Wrangler’s electrical system, the new 350 engine’s electrical components, and the custom wiring harness connecting them. It would highlight the routing of wires, the placement of fuses, relays, and other critical components, and the connections between the engine components and the harness. This diagram would be easily understood and follow a standard electrical schematic format.]“`
Electrical Considerations
Consider these crucial factors when modifying the electrical system:
- Grounding: Proper grounding is essential for preventing electrical issues. Ensure a robust connection to the chassis to handle the increased current demands.
- Fuses and Relays: Using appropriate fuses and relays is vital to protect the system from overloads. Select fuses with ratings suitable for the new components.
- Voltage Regulation: Ensure the electrical system can handle the voltage demands of the new engine. Consider a voltage regulator if necessary.
Fuel System Modifications: Jeep Wrangler 350 Conversion Kit
The heart of any engine’s performance lies in its fuel delivery system. Adapting a Jeep Wrangler’s fuel system for a powerful 350 engine requires careful consideration. This isn’t just about bolting on new parts; it’s about ensuring the engine receives the precise fuel mixture needed for optimal power and efficiency. This involves upgrades to the fuel pump, lines, and injectors, all playing a crucial role in getting the right amount of fuel to the engine.Fuel delivery, in a nutshell, is the process of getting fuel from the tank to the engine’s cylinders.
The efficiency and effectiveness of this process directly impact the engine’s power and overall performance. A well-designed fuel system is vital for smooth operation and long engine life.
Fuel Pump Upgrade
A crucial aspect of a 350 conversion is upgrading the fuel pump. The stock fuel pump, often inadequate for the 350’s increased fuel demand, needs replacement. A high-flow fuel pump with a higher pressure rating is essential for delivering the fuel needed for optimal performance. This ensures the engine receives the necessary fuel at the correct pressure and volume, maximizing power output.
Fuel Lines and Fittings, Jeep wrangler 350 conversion kit
Appropriate fuel lines and fittings are necessary for the smooth flow of fuel. Using higher-quality, reinforced fuel lines and ensuring proper connections and fittings are critical to prevent leaks and maintain pressure integrity. Incorrectly sized or poorly installed fuel lines can lead to reduced fuel flow, resulting in reduced power. Careful attention to detail during installation is crucial.
Fuel Injectors
Fuel injectors are the fine-tuning mechanisms that deliver the exact amount of fuel needed for combustion. Often, the stock injectors cannot handle the demands of a 350 engine. Upgrading to high-flow injectors that are designed for higher fuel pressures and volumes is crucial. This ensures that the correct fuel-to-air ratio is maintained, preventing lean or rich conditions, which can severely impact engine performance.
Choosing the right injectors is critical to maximizing efficiency.
Fuel Pressure Regulator
Maintaining precise fuel pressure is vital. A fuel pressure regulator is necessary to control the fuel pressure delivered to the injectors. The regulator must be capable of handling the increased fuel demands of the 350 engine. An improperly functioning regulator can result in either insufficient or excessive fuel pressure, negatively affecting engine performance and potentially causing damage.
Fuel System Component Comparison
This table compares various fuel system components for a 350 conversion kit.
| Component | Stock | Recommended Upgrade | Rationale |
|---|---|---|---|
| Fuel Pump | Low-flow | High-flow, higher pressure | Meets increased fuel demand |
| Fuel Lines | Standard | Reinforced, higher-pressure rated | Prevent leaks and maintain pressure |
| Fuel Injectors | Low-flow | High-flow, higher pressure | Ensures correct fuel-air ratio |
| Fuel Pressure Regulator | Standard | High-flow, capable of handling increased pressure | Maintains accurate fuel pressure |
Potential Fuel Delivery Issues and Solutions
A few potential issues that can arise during a 350 conversion include fuel leaks, fluctuating fuel pressure, and injector problems. Properly routing fuel lines, ensuring tight connections, and checking for leaks are critical. Issues with fuel pressure can be diagnosed using a fuel pressure gauge and addressed by adjusting the fuel pressure regulator. Regular maintenance, including checking fuel filter condition, is important to prevent clogs.
Installation and Troubleshooting Guide
Transforming your Jeep Wrangler into a 350 powerhouse is an exciting endeavor. This guide details the installation process, highlighting potential pitfalls and providing solutions to ensure a smooth and successful conversion. Careful planning and meticulous execution are key to achieving optimal performance and longevity.This guide meticulously Artikels the steps involved in installing a 350 conversion kit in a Jeep Wrangler.
Each step is presented with clear instructions and potential problems are addressed, empowering you to navigate any challenges encountered. The focus is on practicality and safety, providing a comprehensive roadmap for a successful project.
Disassembly and Component Preparation
Thorough preparation is essential for a smooth installation. Carefully remove existing engine components and carefully document their locations and connections. Properly marking all wiring and lines is crucial for accurate reassembly. Ensuring all components are in perfect condition and properly cleaned before installation will save time and frustration during the process.
Engine Mounting and Alignment
Precise engine mounting is vital for optimal performance and longevity. Verify the mounting points match the vehicle’s specifications. Use alignment tools and techniques to ensure precise placement, minimizing stress on the engine and drivetrain. Proper alignment prevents misalignment and ensures smooth operation.
Transmission and Drivetrain Integration
Connecting the new transmission and drivetrain requires careful attention to detail. Ensure the transmission mounts and the drivetrain components are correctly positioned and aligned. Check for proper clearances and secure all bolts and connections. This meticulous integration ensures seamless power transfer.
Suspension and Steering Modifications
Adapting the suspension and steering to the new engine’s weight and characteristics is crucial. Adjust the suspension to maintain proper ride height and handling. Modify the steering components as needed to accommodate the additional weight and potential changes in the vehicle’s center of gravity. This will ensure a safe and enjoyable driving experience.
Wiring and Electrical System Modifications
The electrical system needs to be modified to accommodate the new engine’s components. Carefully route wiring and ensure proper connections to prevent short circuits and electrical issues. Double-check all connections to prevent potential electrical problems during operation.
Fuel System Modifications
Modifying the fuel system is critical for proper fuel delivery to the engine. Ensure the fuel lines, pumps, and injectors are compatible with the new engine. Ensure the fuel system is properly calibrated and functioning as expected. Accurate fuel delivery is essential for efficient operation.
Installation of Accessories
After completing the main installation, install all necessary accessories, such as fans, alternators, and other crucial components. Double-check the proper functioning of each accessory before starting the vehicle. This will ensure optimal performance and prevent potential problems later.
Troubleshooting Guide
| Problem | Possible Cause | Troubleshooting Steps |
|---|---|---|
| Engine won’t start | Faulty fuel delivery, spark plug issues, electrical problems | Check fuel pump, inspect spark plugs, verify wiring connections |
| Engine misfires | Incorrect fuel mixture, ignition timing issues, clogged injectors | Adjust fuel mixture, verify ignition timing, clean injectors |
| Unusual noises | Loose or damaged components, improper alignment | Check for loose bolts, inspect for damaged parts, re-align components |
A methodical approach and a careful examination of each component are key to avoiding and solving potential problems. Thorough testing and verification of all systems are essential for a successful conversion.
Performance and Maintenance
Unleashing the beast within your Jeep Wrangler with a 350 conversion kit unlocks a whole new world of off-road prowess. This isn’t just about swapping engines; it’s about transforming your vehicle into a capable machine. This section delves into the enhanced performance and the meticulous maintenance required to keep your 350-powered Wrangler running smoothly and reliably for years to come.The 350 conversion kit isn’t merely a swap; it’s a meticulously engineered upgrade that delivers significant power gains.
Expect a noticeable increase in torque and horsepower, translating into a more responsive and powerful driving experience, especially in demanding off-road conditions. This power surge makes navigating challenging terrains a breeze, while still retaining the iconic Jeep Wrangler spirit.
Performance Enhancements
The 350 conversion kit’s impact on performance is substantial. The increased displacement and horsepower lead to a noticeable improvement in acceleration and top speed, especially noticeable when compared to stock engines. This upgrade is perfect for those who crave a more robust and spirited driving experience, whether on the trails or the highway. This increased power also translates to better towing capacity, making the Jeep more versatile for various hauling needs.
Maintenance Requirements
Maintaining a 350 conversion kit requires a bit more attention than a stock engine. Regular maintenance is crucial to ensuring the longevity and performance of the upgrade. This includes meticulous oil changes, filter replacements, and vigilant inspection of all components. Understanding the specific needs of the 350 engine and associated modifications will help you maintain its optimal performance.
Additional Tools and Parts
Maintaining your 350 conversion kit requires specialized tools and parts. Proper maintenance involves more than just the usual tools; specialized tools are required for tasks like valve adjustments and timing belt changes.
| Tool Category | Specific Tools/Parts |
|---|---|
| Engine Maintenance | Torque Wrenches, Specific Socket Sets, Oil Filter, Oil Pan, Gasket Kits |
| Drivetrain Maintenance | Universal Joints, Driveshaft, Transmission Fluid |
| Electrical Maintenance | Wire Connectors, Electrical Tape, Wiring Diagrams |
Maximizing Performance and Longevity
Several key strategies contribute to maximizing the performance and longevity of your 350 conversion kit. Proper maintenance schedules are vital, ensuring components are checked and serviced before issues arise. Understanding the engine’s operating characteristics and tailoring your driving style for optimal performance can also significantly extend the life of your conversion. Always consult your owner’s manual for specific recommendations.
Regular maintenance is the key to longevity and optimal performance.
Proper lubrication, consistent monitoring of fluids, and adherence to recommended maintenance intervals are critical for extending the life of the conversion kit.
Cost Analysis and Budget
Transforming your Jeep Wrangler into a 350 powerhouse is an exciting prospect, but a crucial aspect of any project is understanding the financial implications. This section dives deep into the costs involved, providing a realistic breakdown of expenses and offering strategies for staying within budget.
Comprehensive Cost Breakdown
The cost of a 350 conversion kit isn’t a fixed number; it’s a dynamic figure shaped by several factors. These factors, from engine choice to installation expertise, will all play a role in the final price tag. Expect variations based on the specific components selected and the level of customization desired.
Factors Influencing Conversion Kit Costs
Several elements significantly impact the overall cost of your 350 conversion. Engine options, transmission compatibility, the level of custom modifications, and the intricacy of the wiring and fuel system adjustments will all influence the final price. Furthermore, labor costs for installation play a critical role, as skilled mechanics are essential for a successful and safe conversion.
Component Cost Table
The table below offers a generalized view of the estimated costs for different components of a 350 conversion kit. Keep in mind these are approximations, and actual costs may differ based on your specific choices.
| Component | Estimated Cost Range (USD) |
|---|---|
| Engine (350) | $2,500 – $5,000 |
| Transmission | $1,000 – $2,500 |
| Drivetrain Components | $800 – $2,000 |
| Suspension Modifications | $500 – $1,500 |
| Steering Modifications | $200 – $800 |
| Wiring & Electrical System | $500 – $1,000 |
| Fuel System Modifications | $300 – $700 |
| Installation Labor (approx.) | $1,500 – $3,000 |
| Other Components (accessories, tools) | $500 – $1,000 |
| Total Estimated Cost (range) | $8,000 – $18,000 |
Potential Cost Savings
Reducing expenses without compromising quality is possible. Consider sourcing some components yourself, potentially from online marketplaces or used parts vendors. Careful planning and shopping around can help you discover substantial savings. Also, a DIY approach, if you possess the necessary skills and tools, could significantly reduce labor costs. Doing some research on local mechanic shops and comparing prices can lead to better deals.
