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1998 GMC Engines & Components
Showing In Stock Items. Show All 99 Items.
Proform Super-Street Roller Rocker Arms
These Proform Super-Street roller rocker arms will help rid your engine of internal friction. They feature a race-proven, cage bearing fulcrum and roller tip. The Super-Street rocker arms not only unleash horsepower, but they also lengthen valvetrain component life and reduce wear and tear on valve stem tips. Proform rockers are precision-machined to ensure consistency and ratio accuracy, and they have a great looking anodized finish.
( 128 )
$189.99
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$245.99
Clevite H-Series Main Bearings
Clevite H-Series main bearings were developed primarily for NASCAR racing, but are well suited to other types of competition engines as well. They're especially good for engines that run at medium-to-high revs. They have steel backings with carefully selected overlays and a high crush factor, plus a medium level of eccentricity. H-Series bearings have enlarged chamfers at the sides for greater crank-fillet clearance and are made without flash plating for better seating. They are also available with either 180 degree or 360 degree oil grooves, as well as an extra 0.001 in. of clearance.
( 140 )
$101.99
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$174.99
Summit Racing™ Mechanical Lifters
These Summit Racing™ mechanical lifters are manufactured using the tightest tolerances in the industry, ensuring optimum performance. The crown of the lifters is ground to a precise radius for proper break-in and to guarantee long life. The Summit Racing™ mechanical lifters feature an oil-metering band milled to the correct depth to prevent too much oil from being delivered to the top of the motor and to prevent horsepower loss.
( 2 )
$109.99
Melling Shark Tooth Oil Pumps
Smoother, tighter, and quicker--Melling Shark Tooth oil pumps utilize helical asymmetrical technology to improve the heartbeat of the traditional internal gear pump. The use of this new gear design feeds your engine an increased flow of oil without the usual pulsing. How much more? About 10 to 25 percent more volume! Equip your setup for a powerful bite of high performance; install one of these Melling Shark Tooth oil pumps. Melling Shark Tooth pumps are: * Smoother--significant reduction in pressure ripple (pulsing) also means a reduction in torque ripple in pump drive, improved distributor operation, a reduction in spark scatter, and improved distributor gear wear and intermediate shaft wear * Tighter--improved sealing of gear tips to housing provides reduced internal leakage and improved efficiency and performance * Quicker--increased inlet vacuum equals faster primes
( 43 )
$148.99
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$203.99
On Sale
Mr. Gasket Cast Aluminum Valve Covers
Mr. Gasket cast aluminum covers are constructed of high quality die-cast aluminum for an excellent fit. They are available in polished, finned, and ball-milled versions to fit a variety of engines. Features: * Top quality cast aluminum construction * Choice of smooth top polished, finned, or ball-milled designs * Some available in tall versions for additional rocker arm clearance * Thick gasket rail area for excellent sealing * Pre-punched breather openings with baffles * Includes mounting hardware
( 91 )
$124.95
$112.45
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$138.95
King XP-Series Coated Rod Bearings
Give your engine the winning edge with King XP-Series coated rod bearings. Built off the revolutionary XP-Series tri-metal construction, King's factory-applied pMaxKote nano-composite coating takes protection to the next level without adding any additional thickness! These high performance race bearing sets are available for fitment on a wide range of specific vehicle applications. pMaxKote provides: * Superior seizure resistance * Superior cavitation resistance * Superior wear resistance * Superior protection against oil starvation
( 10 )
$125.99
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$144.99
Clevite Coated H-Series Main Bearings
Clevite coated H-Series main bearings were developed primarily for NASCAR racing, but are also well-suited to other types of competition engines. They are especially good for engines that run at medium-to-high revs. They have steel backings with carefully selected overlays and a high crush factor, plus a medium level of eccentricity. These H-Series bearings feature Clevite's exclusive TriArmor coating, the industry's only moly/graphite treatment. The sophisticated blend, in a low-friction PTFE polymer base, offers extraordinary protection and lubricity. Clevite H-Series bearings have enlarged chamfers at the sides for greater crank-fillet clearance and are made without flash plating for better seating. They come with 180 degree oil grooves, and can be ordered with an extra 0.001 in. of clearance if needed.
( 4 )
$149.99
On Sale
Mr. Gasket Aluminum Valve Covers
Mr. Gasket aluminum valve covers are fabricated from 100 percent TIG-welded 6061 T-5 aluminum sheeting for a perfect lightweight fit. Available in natural, polished, powdercoat, or anodized finishes, they'll enhance the appearance of any engine compartment. The covers feature an extended sealing lip to positively locate and secure the gasket from moving, eliminating oil leaks. These valve covers can be ordered with plain or finned tops, and each piece includes a 1 1/4 in. diameter breather hole (except where noted). Order the model designed for fitment on your make/model and engine type.
( 79 )
$220.95
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$243.95
$198.85
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$219.55
Edelbrock Performer-Plus Series Lifters
Performer-Plus lifters from Edelbrock are designed to handle the torque and horsepower that the Performer-Plus camshafts produce. They are also matched perfectly by Edelbrock to provide consistent power.
( 10 )
$134.95
COMP Cams Solid Lifters
For the enthusiast who chooses a solid lifter cam, COMP Cams offers the highest quality solid lifters available today. These lifters are manufactured using the tightest tolerances in the industry, ensuring optimum performance. The crown of the lifters is ground to a precise radius for proper break-in and to guarantee long life. The oil-metering band is milled to the correct depth to prevent too much oil from being delivered to the top of the motor, and to prevent horsepower loss. Order the size and quantity needed for your engine application.
( 28 )
$184.95
Earl's Performance Oil Filter Bypass Adapters
Many installations, particularly oil cooler installations, require the oil filter to be relocated. Earl's has bypass adapters for most spin-on and many bolt-on applications. They're designed to be quick and easy to install.
( 13 )
$130.95
Derale Engine Oil Filter Relocation Kits
Now you can easily move your vehicle's oil filter to a more convenient location for quicker and easier filter changes with one of these Derale Performance engine oil filter relocation kits. They work great for engine swaps, too! The kits are available for hundreds of vehicles; order the model recommended for your application.
( 39 )
$104.38
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$112.40
King XP-Series Coated Main Bearings
Give your engine the winning edge with King XP-Series coated main bearings. Built off the revolutionary XP-Series tri-metal construction, King's factory-applied pMaxKote™ nano-composite coating takes protection to the next level without adding any additional thickness! Order the replacement main bearings designed for fitment with your engine. pMaxKote™ provides: * Superior seizure resistance * Superior cavitation resistance * Superior wear resistance * Superior protection against oil starvation
( 8 )
$116.99
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$141.99
PRW Sportsman Steel Roller Tip Rocker Arms
PRW Sportsman steel roller tip rocker arms are an ideal choice for a significant cross-section of engines. Anything from a mild street rebuild to the performance demands of off-track, Circle Track, and drag racing. These 4340 chromoly steel rocker bodies feature a longer pivot slot for higher lift camshafts. They're much stronger than stamped steel, so rocker arm flex is negligible. The roller tip minimizes scrubbing from the valve stem pushing forcefully against the valve guide. This reduces friction and frees up an additional 15 to 30 hp over stock models. PRW Sportsman steel roller tip rocker arms are an excellent performance alternative to stock rockers. Order the set recommended for your specific vehicle and engine size. Features, items, and specs: * Wide assortment of ratios to suit almost any cam profile * PRW RockerLocs * Rated at 350 lbs. open spring pressure * Heat-treated pivot balls
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$163.25
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$207.41
Howards Cams Double Roller Billet Steel Timing Sets
Howards Cams double roller billet steel timing sets are designed for accuracy and long life. Lightweight by design, these sets feature a billet steel cam sprocket with lightening holes, a heat-treated crank sprocket, and a black oxide coating. They also include large .250 in. diameter seamless roller chains.
( 66 )
$124.99
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$125.99
Chevrolet Performance Engine Oil Pans
Swap out your old engine oil pan with a quality replacement from Chevrolet Performance. They are manufactured from durable steel or aluminum and have a black painted or natural finish. Available for different sizes and styles of engines, Chevrolet Performance parts are sure to keep the engine oil in the pan, where it belongs.
( 48 )
$229.99
On Sale
Mr. Gasket Chrome Valve Covers
These chrome valve covers from Mr. Gasket are the perfect addition to your engine. They have Mr. Gasket quality and a great price. The covers have a thick-gauge steel with a durable chrome finish, and most are available in short or tall versions.
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$124.95
$112.45
ACDelco GM Genuine Parts Harmonic Balancers
ACDelco GM Genuine Parts harmonic balancers help reduce torsional vibrations by connecting to the crankshaft of your vehicles engine. They serve as pulleys for your engine's accessory drive belts, and are GM recommended replacements for your vehicle's original component. These GM Genuine Parts harmonic balancers have been manufactured to fit your GM vehicle, providing you with the same performance, durability, and service life you expect from General Motors.
( 49 )
$115.99
ICT Billet Air Conditioning Compressor and Power Steering Bracket Kits
LS conversions are extremely popular for cars, trucks, and street rods. ICT Billet air conditioning compressor and power steering bracket kits are designed for LS swaps to add air conditioning and power steering. These brackets are milled from aerospace-grade billet aluminum for impressive strength and longevity. ICT Billet air conditioning compressor and power steering bracket kits will allow you to add these comforts to your classic.
Not Yet Reviewed
$246.99
Chevrolet Performance Oil Pumps
Chevrolet Performance oil pumps are offered for an extensive range of cars, trucks, vans, and SUVs. Made from high-quality materials by a name you trust, they're available in both wet and dry sump styles, as well as standard and high-volume. Order the oil pump model designed for fitment on your vehicle application.
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$125.05
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$222.99
ACDelco Water Pump Pulleys
ACDelco offers dependable and durable water pump pulleys for just about every vehicle on the road today. Their steel replacements are a one-piece construction, making them less likely to fail under normal conditions—plus, their black finish helps to resist corrosion. Aging pulleys can cause premature belt wear and reduce the performance of your water pump. You're choosing a direct fit with a no-hassle install and renewed efficiency when you purchase an ACDelco water pump pulley.
( 8 )
$123.99
Chevrolet Performance Timing Covers
Chevrolet Performance timing covers are built to the highest quality standards to ensure an excellent fit and leak-free seal. They're available in various materials, finishes, and configurations for fitment on specific make/model and engine applications.
( 13 )
$132.99
Melling High-Volume Oil Pumps
Melling high-volume oil pumps give you an additional 20 to 25 percent of much-needed oil volume for your performance application. For those of you who need added pressure, many pumps are supplied with a high-pressure spring (where noted). The pumps are built using a proprietary casting process, which yields maximum performance and reliability. Every Melling oil pump is completely pressure-tested, including idle and bypass pressure, before it leaves the factory. Dozens of models are available for fitment; order the pump and options needed for your vehicle.
( 363 )
$125.99
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$206.99
Dorman Oil Pans
Oil is the lifeblood of your engine, so it deserves a superior reservoir--such as one of these Dorman oil pans. They are constructed of painted stamped steel or natural finish aluminum for long-lasting durability. Each replacement unit is manufactured to OEM specs, ensuring a precise fit that provides an additional layer of efficiency and convenience without any modifications. Leaks, rust, damage, or an engine rebuild are all good reasons to install a new oil pan. Nearly 200 models are available, with various configurations, capacities, and sump styles. Find the Dorman oil pan to fit your car, truck, van, or SUV--and keep the vital lubricants flowing. Oil drain plugs and drain plug gaskets are sold separately.
( 236 )
$108.99
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$180.99
