1998 Chevy Truck 1500 5.7L Engine
5.7L V8 • 350 CID • L31 Vortec • Gasoline • VIN R • 8th Digit
Looking for an engine for your 1998 Chevy Truck 1500? This application uses the 5.7L V8 Vortec 5700 (L31) gasoline engine, identified by VIN R in the 8th digit. Verify your VIN and vehicle details before choosing a replacement engine.
1998 Chevy Truck 1500 5.7L Engine Overview
The 1998 Chevrolet C/K1500 was available with several engine configurations, so identifying the correct engine is important before ordering a replacement. The 5.7L V8 is commonly identified as the Vortec 5700, with engine designation L31 and VIN code R.
The engine has a displacement of approximately 5,733 cc, or 350 cubic inches, and uses a traditional overhead-valve V8 design with hydraulic roller lifters. Chevrolet's period specifications list sequential fuel injection, a 4.00-inch bore, a 3.48-inch stroke and a 9.4:1 compression ratio.
For the C/K truck application, Chevrolet listed approximately 255 horsepower at 4,600 rpm and 330 lb-ft of torque at 2,800 rpm, although output can vary depending on the exact truck configuration.
If your truck has the 5.7L gasoline engine and VIN R as the 8th character, this is the engine application you should use as your starting point when checking replacement options.
1998 CHEVY TRUCK 1500
5.7L V8 • VORTEC 5700 • L31 • GASOLINE
VORTEC 5700
L31 V8 GASOLINE ENGINE
FITMENT CHECK: Confirm the complete VIN, engine configuration, emissions equipment and included components before ordering.
Need a Replacement Engine for Your 1998 Chevy Truck?
An engine replacement can become confusing when several engines were available for the same truck generation.
For the 1998 Chevrolet C/K1500, the 5.7L V8 is identified by VIN R in the 8th position. Chevrolet’s owner’s documentation also lists the 5.7L Vortec 5700 with VIN code R.
Before choosing an engine, compare:
- Vehicle year
- Chevy truck model
- Engine displacement
- VIN engine code
- Fuel type
- Engine designation
- Emissions configuration
- Existing engine configuration
- Required accessories and components
A VIN match is an important starting point, but the complete vehicle configuration should still be confirmed.
How to Identify the 5.7L Engine in Your Chevy Truck
The easiest way to begin is by checking your truck’s VIN.
For the 1998 Chevrolet truck application:
8th VIN digit = R
R = 5.7L V8 / L31 gasoline engine
The VIN can be found on the plate at the top-left area of the instrument panel near the windshield. The engine identification can also be checked against the vehicle’s under-hood information and engine identification markings.
Important
Don’t identify the engine using the 8th digit alone if you are ordering a replacement.
Give the sales representative:
Year + Make + Model + Engine Size + VIN
This gives the fitment team more information to verify the application.
Used Engine Options for a 1998 Chevy Truck
A used engine can be an option when the original engine has reached the point where repair or rebuilding is no longer practical.
When comparing an engine, don’t look only at the displacement.
Ask about:
Engine assembly
Find out whether the engine is being supplied as a complete assembly, long block or another configuration.
Accessories
Alternator, starter, intake components, brackets, sensors and other accessories may vary depending on what is included.
Engine configuration
The exact configuration should match the vehicle’s application.
VIN compatibility
Your VIN R application should be confirmed before purchase.
Condition
Ask what condition the engine is in and what testing or inspection information is available.
Included components
What comes with the engine can vary, so confirm the included components with the sales representative.
This is especially important because used and remanufactured engines can be supplied in different configurations.
Why Choose AutomartAutoparts?
Finding the right used engine or transmission can be stressful, especially when you're not sure about compatibility, availability, or where to find the right replacement. Automart Auto Parts helps make the process simple. We have helped many customers find replacement engines and transmissions for a wide range of vehicles, and our parts specialists are here to help you identify the right option for your vehicle.
With so many used engines for sale online, finding the correct replacement can be difficult. Automart Auto Parts helps make the process simpler by helping customers identify appropriate used engine applications based on their vehicle information.
With multiple warehouse locations across the state, we can help customers connect with available parts closer to their area. Our network and inventory sources allow our team to check available replacement engines and transmissions based on your vehicle's requirements.
Trusted by Customers
We've helped many customers with their replacement engine and transmission needs, providing assistance throughout the process.
Multiple Warehouse Locations
With multiple warehouse locations across the state, our network helps us serve customers in different areas and check for available parts closer to them.
Fitment Assistance
Not sure which engine or transmission you need? Our parts specialists can help verify your vehicle and part information before you move forward.
Availability & Pricing
We can check current availability and provide pricing information based on the replacement part your vehicle requires.
A Simpler Way to Find Your Replacement Part
You don't have to spend hours comparing used motors for sale and trying to determine which engine will work with your vehicle.
Tell our team your vehicle's year, make, model, engine size and VIN when available. Our parts specialists can use that information to help identify the appropriate replacement application and check available options.
Whether you need a used engine for a car, truck or SUV, starting with accurate vehicle information makes it easier to narrow down the correct replacement.
Looking for a Chevy Truck Engine Near You?
If you’re searching for a 1998 Chevy Truck engine, online listings can sometimes make the process confusing because several engines were offered in the same truck generation.
Instead of searching only by “5.7L engine,” include the complete application:
1998 Chevrolet C/K1500 + 5.7L + VIN R
This helps narrow the search to the correct engine family and application.
If you’re unsure whether your truck has the L31 Vortec engine, send the complete VIN to an agent for confirmation.
How It Works
Finding the right replacement engine or transmission is simple. Tell us about your vehicle and our parts specialists will help you find the right replacement option.
Tell Us Your Vehicle
Provide your vehicle's year, make, model and engine or transmission information. We may also ask for your VIN to help confirm compatibility.
Tell Us What You Need
Let us know whether you're looking for a used engine, replacement engine, used transmission or replacement transmission.
We Check Availability
Our parts specialists check available inventory and supplier options to help identify a suitable replacement for your vehicle.
Get Your Quote
Once an appropriate option is identified, our team can provide available pricing and relevant part details for you to review.
FAQ
Is the 1998 Chevy Truck 1500 5.7L engine a V8?
Yes. The 1998 5.7L Vortec 5700 is an 8-cylinder V8 gasoline engine. Chevrolet's specifications identify the engine as 5.7L V8 / 350 CID.
What engine is VIN R on a 1998 Chevy Truck?
For the relevant 1998 Chevrolet truck VIN system, R in the 8th position identifies the 5.7L gasoline Vortec engine, engine designation L31.
What Is the L31 5.7L Vortec Engine?
What Does 350 Mean on a 1998 Chevy Truck Engine?
The term 350 refers to the engine’s approximate displacement in cubic inches.
The 5.7L engine has approximately:
350 cubic inches = 5.7 liters
You may therefore see this engine described as:
- 5.7L V8
- 350 V8
- 350 CID
- Vortec 5700
- L31
- VIN R engine
These descriptions can refer to the same basic application, but the complete fitment should still be confirmed before selecting a replacement.
How much horsepower does the 1998 5.7L make?
Chevrolet's 1998 C/K specifications list 255 hp at 4,600 rpm and 330 lb-ft at 2,800 rpm for the applicable C/K configuration. Other configurations had different ratings.
Can I use any 5.7L Chevy engine?
Not automatically. Different years and configurations can have differences in emissions equipment, components, engine configuration and fitment. Verify the exact application before ordering.
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