GMC 250 Engine Parts

Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:

• Unsurpassed quality that you can trust
• Uses leading edge materials
• State-of-the-art manufacturing
• Exacting tolerances
• Meets or exceeds OEM specifications

Complete kit includes retainers and locks. Springs made of highest quality spring wire. Springs precision wound to close tolerances. Includes superior quality steel retainers. Includes 7 degree heat-treated valve stem locks. Retainers and locks black oxide coated. Non-Rotator style: Dyno tested and street proven. Great match to Edelbrock camshaft kit.

Product Features:

• For Use With Cast Iron Heads
• Springs Made of Highest Quality Spring Wire
• Springs Precision Wound To Close Tolerances
• Use with Original Equipment Heads Only

Product Features:

• Hydraulic roller tappet style camshaft
• Reduces friction and eliminates break-in problems
• Reduces friction and eliminates break-in problems
• Permit higher valve velocities for increased performance
• Maintains good manifold vacuum and drivability

Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.

Product Features:

• Imperial Swirl-Cool engine oil cooler kit
• Size: 1-1/2″ x 6-1/2″ x 18″
• Heavy-duty applications
• All except Chevrolet V8 applications
• Universal Cooler, NOT a direct OE replacement. User to determine fitment prior to installation
• Heavy duty applications
• All except Chevrolet V8 applications
• Universal Cooler, NOT a direct OE replacement. User to determine fitment prior to installation
• Heavy duty applications
• All except Chevrolet V8 applications

ARP only uses premium grade 8740 alloy and a proprietary ARP2000 alloy that are rated for superior to “aircraft” quality alloy steels. Secondly, each stud is placed vertically into special racks and precisely heat-treated to 200,000 psi for the 8740 material and 220,000 psi for the ARP2000 material. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best. 

Product Features:

• 1/2″ 12-Point, 3/16″ Allen Socket Size(s)
• 8740 Chromoly
• Black Oxide
• Small Block Chevy
• Sold As A Kit

Product Features:

• Valve Cover Gasket

Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:

• Unsurpassed quality that you can trust
• Uses leading edge materials
• State-of-the-art manufacturing
• Exacting tolerances
• Meets or exceeds OEM specifications

Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:

• Unsurpassed quality that you can trust
• Uses leading edge materials
• State-of-the-art manufacturing
• Exacting tolerances
• Meets or exceeds OEM specifications

Edelbrock part #4860 S/B Chevy Chrome Timing Cover (with Welded Reinforcement Plate) This stamped steel timing covers for small-block Chevrolet has a reinforcement plate welded to the inside of the cover for added strength. This timing cover is ideal for

Product Features:

• Stamped Steel Material
• Comes W/ Front Crankshaft Seal Installed
• W/ Welded Reinforcement Plate
• Chrome Finish
• Ideal For Preventing Camshaft Walk When Used W/ Thrust Button

All Pro Series bolts are cold forged to ensure molecular integrity, heat treated prior to thread rolling and machining, and are rated at 200,000 PSI tensile strength. ARP Pro Series head bolt kits are application specific, designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP zero defect zero failure quality standard. Hardened and parallel ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12 point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more stretch to compensate for the additional compression of gaskets.

Product Features:

• Pro Series Bolts Are Cold Forged To Ensure Molecular Integrity, Heat Treated Prior To Thread Rolling And Machining
• Nominally Rated At 200,000 PSI Tensile Strength
• These Fasteners Deliver Superior Strength And Meet The ARP Zero Defect Zero Failure Quality Standard
• Bolts Have A Reduced Wrenching Hex Or 12 Point Head And Wide Area Flange To Eliminate The Need For Valve Train Removal For Cylinder Head Retorquing And Permits The Use Of Larger Diameter Valve Springs

you have probably heard many a horror story about someone losing an engine when the oil pump fell off into the pan because of a broken bolt. Well, you can put your mind at ease when using ARP premium grade oil pump bolt and stud kits. You have a choice of black oxide finished 8740 chrome moly steel or low maintenance stainless steel. Both are nominally rated at 170,000 PSI tensile strength to provide you with plenty of clamping force. Moreover, take your pick between conventional hex style or 12 point designs. This is insurance that no conscientious engine builder should be without The studs come with flat washers and nuts, while the Ford bolt kit has flat washers only. These inexpensive fasteners can literally save your engine.

Product Features:

• Nominally Rated At 170,000 PSI Tensile Strength To Provide You With Plenty Of Clamping Force
• Premium Grade Oil Pump Stud
• The Studs Come With Flat Washers And Nuts
• Black Oxide Finished 8740
• Hi-Volume
• 3.125″

Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:

• Formulated for prelubrication cam lobes, lifters & engine bearings
• Increases load carrying capacity
• Holds fast to surfaces
• Exacting tolerances
• Meets or exceeds OEM specifications
• 4.0 oz. Squeeze Container

The Edelbrock #5087 E-210 Cylinder heads are designed for use with 1955-1986 Small-Block Chevy applications. The Edelbrock E-Series cylinder heads are a step up in affordable performance from our E-Street line. They feature larger runners for increased ai

Product Features:

• Complete Pair For Mechanical Flat Tappet
• 64cc Combustion Chamber Volume
• 210cc Intake/75cc Exhaust Runner Volume
• 2.08 in. Intake/1.6 in. Exhaust Valve Diameter
• 0.562 in. Deck Thickness

A new Melling oil pump shaft is recommended to complete every new oil pump install. Melling offers a complete line of high quality shafts for domestic and import pump applications. A new oil pump shaft is necessary due to possible metal fatigue, cracking

Product Features:

• Manufactured from high quality materials for consistent durable wear
• Precision engineered for optimum fit and function
• Designed for long-life and worry-free performance
• Meets or exceeds original equipment specifications

Sealed Power« Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.

Product Features:

• Steel-backed bronze alloy lining with overplate
• Popular for fatigue resistance & strength
• Provides conformability required for older apps
• Our standard material is comparable to competitors performance bearing
• Note – This material offers less resistance to wear & corrosion than other materials.
• Utilizes ISO & QS certified manufacturing

Our unique Multi-Layered steel head gasket embossment formation process optimizes the embossment radius, reduces stress points, enhances gasket conformability, and provides uniform clamp load distribution. This all results in superior surface contact between block and cylinder head. All head gasket layers/spacers go through an additional process to significantly reduce forming induced stress. Advantages are reduced brittleness in material, increased flexibility and deformation retention. This stabilizes the gasket, resulting in reduced cylinder bore distortion and improved combustion seal fro the extreme cylinder pressures found in high compression, supercharged and turbocharged applications. A proprietary polymer coating ensures the micro-seal of engine coolant and oil fluids. A typical MLS head gasket requires a smoother (30Ra) surface finish than composite head gaskets. Mr. Gasket’s proprietary polymer coating will seal a surface finish twice as rough (60Ra) as a typical MLS head gasket. For high performance street, drag race and oval track use.

Product Features:

• Gasket bore – 4.035 inch: Compressed thickness – .040 inch
• Manufactured from 3-layer premium grade stainless steel and state of the art laser cutting
• Optimized sealing embossments seals extreme cylinder pressure
• Provides excellent stability and reduces cylinder bore distortion.
• Proprietary polymer coating ensures the micro seal of engine coolant and oil fluids.
• Ideal for supercharged, turbocharged, nitrous oxide and extreme compression ratio engines
• For high-performance street, drag race and oval track use

Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.

Product Features:

• Steel-backed Babbitt lining material
• Used in automotive and high-performance
• Babbitt is designed to perform under extreme loads w/o damaging other engine parts
• Babbitt is more environmentally friendly than other material
• ISO & QS certified manufacturing

If you have ever installed a rocker stud into a cylinder head and watched it wobble as it screwed in, you knew from the beginning that the rocker geometry was going to be inconsistent all over the place. ARP rocker studs are concentric within 0.005 T.I.R. thread pitch to thread pitch. They run in straight and true. Lengths are exact designed to provide positive seating every time. An extra large radius base offers greater resistance to flex. Available in both High Performance and Pro Series models. To be used with ARP patented Perma Loc(TM) adjusters.

Product Features:

• Made Of 8740 Chrome Moly Forgings
• Heat Treated To 180,000 PSI
• Excellent For Elapsed Time Bracket Racing, Limited Rule Oval Track Competition And Street Use
• Lengths Are Exact Designed To Provide Positive Seating Every Time
• Set of 16
• .800″ Adjuster Thread Length
• 3/8-24 Shank Diameter and Thread
• 3/8″ Typical Small Block Application

Product Features:

• Designed for 1500 to 6500 Performance
• Maximum Power in High-RPM with Good Low-End Torque
• Matched to Edelbrock Performer RPM Intakes
• 10 to 12 in. of Manifold Vacuum at Idle
• More Lift and Duration than Most Street Camshafts
• Includes Hydraulic Lifters and Assembly Lube
• Dyno Matched/Street Proven Performance
• Take The Guesswork Out Of Camshaft Selection

Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:

• Meets or exceeds all original equipment specifications
• Application specific design to ensure a perfect fit
• Premium quality parts
• Engineered and manufactured specifically for the repair environment
• Unsurpassed quality you can trust

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Product Features:

• Meets or exceeds all original equipment specifications
• Application specific design to ensure a perfect fit
• Engineered for the sealing repair environment
• Unsurpassed quality you can trust
• Validated for fit, form, and function

Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:

• Meets or exceeds all original equipment specifications
• Application specific design to ensure a perfect fit
• Engineered and manufactured specifically for the repair environment
• Unsurpassed quality you can trust
• Includes all parts needed to complete the repair

Mr. Gasket Oil Dipstick is similar in design to original equipment, it can be installed with simple hand tools.

Product Features:

• Fits Chevy Small Block 1955-79 283-400 CID
• Block Mounted
• Chrome Plated Steel

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Design type: spring loaded; multi-lip
• Temperature range: -40 Deg. F to 400 Deg. F / -40 Deg. C to 204 Deg. C
• Excellent high temperature capabilities
• Compatible with wide range of fluids
• Delivers quality and reliable performance for every type of repair

The engineers at ARP spent quite a bit of time developing these highly effective, unique oil pan studs. They are designed to make it as easy as possible to install a pan and seal it properly. You will note that the studs have a radiused bullet nose that serves to locate the pan rails, then allow the nuts to be easily installed without the worry of cross threading. For those who prefer bolts, ARP got you covered, too. Both are available in black oxide finished chrome moly steel or rust proof stainless steel. Also, you may choose between conventional hex style or the space saving 12 point nuts. The stud kits come complete with a special locking flanged nut, while the bolt kits come with washers.

Product Features:

• Designed To Make It As Easy As Possible To Install A Pan And Seal It Properly
• Bolt Kits Come With Washers
• Stud Kits Come Complete With A Special Locking
• Easily Installed Without The Worry Of Cross-Threading