1958 GMC PM253 Valve Cover and Cylinder Heads

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:

• Head sets contain gaskets and seals necessary for a valve grind or head reconditioning job
• Application specific design to ensure a perfect fit and premium seal
• Premium quality parts you can trust
• Engineered and manufactured specifically for the repair environment
• Unsurpassed quality you can trust
• Contains all the parts needed to complete the repair unless otherwise noted

Holley is pleased to offer their Vintage Series Small Block Chevy Valve Covers.

Product Features:

• Designed to fit all 1958-86 Small Block Chevy engines with perimeter bolt patterns
• Die-cast aluminum construction ensures high detail and reduces the opportunity for warping of the valve cover flange and oil leaks
• 3.3″ tall (3.5″ overall) with pre-installed internal oil baffles (oil fill and PCV grommets also included)
• Available with and without emissions provisions for your custom application (emissions compliant model includes pre-installed internal oil baffles in both covers, as well as PCV and oil fill grommets)
• Offered in natural cast, polished, satin black with machined fins, and factory orange with machined fins

These new products are the first of the Vintage Series family of die-cast aluminum dress up products featuring a classically inspired finned design and a retro-style Holley script brand mark.

Product Features:

• Designed to fit all 1958-86 Small Block Chevy engines with perimeter bolt patterns
• Die-cast aluminum construction ensures high detail and reduces the opportunity for warping of the valve cover flange and oil leaks
• 3.3″ tall with a solid body for non-emissions applications or custom crankcase ventilation setups
• Available with and without emissions provisions for your custom application (emissions compliant model includes pre-installed internal oil baffles in both covers, as well as PCV and oil fill grommets)
• Offered in natural cast, polished, satin black with machined fins, and factory orange with machined fins

These new products are the first of the Vintage Series family of die-cast aluminum dress up products featuring a classically inspired finned design and a retro-style Holley script brand mark.

Product Features:

• Designed to fit all 1958-86 Small Block Chevy engines with perimeter bolt patterns
• Die-cast aluminum construction ensures high detail and reduces the opportunity for warping of the valve cover flange and oil leaks
• 3.3″ tall (3.5″ overall) with pre-installed internal oil baffles (oil fill and PCV grommets also included)
• Available with and without emissions provisions for your custom application (emissions compliant model includes pre-installed internal oil baffles in both covers, as well as PCV and oil fill grommets)
• Offered in natural cast, polished, satin black with machined fins, and factory orange with machined fins

Holley is pleased to offer their Vintage Series Small Block Chevy Valve Covers.

Product Features:

• Designed to fit all 1958-86 Small Block Chevy engines with perimeter bolt patterns
• Die-cast aluminum construction ensures high detail and reduces the opportunity for warping of the valve cover flange and oil leaks
• 3.3″ tall (3.5″ overall) with pre-installed internal oil baffles (oil fill and PCV grommets also included)
• Available with and without emissions provisions for your custom application (emissions compliant model includes pre-installed internal oil baffles in both covers, as well as PCV and oil fill grommets)
• Offered in natural cast, polished, satin black with machined fins, and factory orange with machined fins

High quality valve covers that help you solve rocker clearance issues. Great for when you just can’t seem to stop those thin steel ones from leaking oil. Good for high performance street, drag and oval track racing. They feature an extended sealing lip to positively locate and secure the gasket and stop it from moving to eliminate oil leaks. These Mr. Gasket covers are precision die cast for light weight and a perfect fit.

Product Features:

• Fits small block Chevy engines
• Polished cast aluminum construction
• Tall design cover for added rocker clearance
• Sold as a pair
• Stops Gasket From Moving
• A Perfect Fit
• Beautifully Polished To A High Luster

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

Inside tang-to-taper relationship held tightly for repeatable valve spring installed heights

Product Features:

• For simplicity, any Super Lock fits any COMP Cams 10° retainer – just choose the correct lock for you valve size and application
• Super Locks are recommended in all race applications

Machined Steel Set of 100 – 7 Degree, 11/32", Single Groove Race Locks

10 Degree, 11/32", Single Groove Lock with Lash Cap Recess

Machined Steel 7 Degree, 11/32", Single Groove Race Lock

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 for 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. Mr. Gasket provides a Limited Lifetime Warranty for MLS cylinder head gaskets.

Product Features:

• Gasket bore – 4.060″ Thickness – .040″
• 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

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

High Performance head bolts are available with a reduced wrenching hex or 12 point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 PSI (which is 15 Percent stronger than Grade 8) and kits come complete with hardened parallel ground washers.

Product Features:

• High Performance Head Bolts Are Available With A Reduced Wrenching Hex Or 12 Point
• Wide Area Flanged Head That Eliminates The Need For Valve Train Removal To Facilitate Cylinder Head Retorquing
• Rated At 180,000 PSI Tensile Strength
• High Performance Head Bolts Are Stronger

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

High Performance head bolts are available with a reduced wrenching hex or 12 point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 PSI (which is 15 Percent stronger than Grade 8) and kits come complete with hardened parallel ground washers.

Product Features:

• High Performance Head Bolts Are Available With A Reduced Wrenching Hex Or 12 Point
• Wide Area Flanged Head That Eliminates The Need For Valve Train Removal To Facilitate Cylinder Head Retorquing
• Rated At 180,000 Psi Tensile Strength
• High Performance Head Bolts Are Stronger