Valves & Valvetrain Parts
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- Pioneer Automotive®Engine Push Rod Guide PlateEngine Push Rod Guide Plate by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$20.74 - $75.12
- COMP Cams®Push Rod Guide PlatePush Rod Guide Plate by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering staff. It ensures...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$7.95 - $76.95
- Crane Cams®Push Rod Guide PlatePush Rod Guide Plate by Crane Cams®. High-performance engine builders and street tuners who crave for maximum performance out of their vehicle, choose these top-grade performance products painstakingly designed by Crane Cams. Revel in...Designed to unlock more performance out of your vehicleBump up engine power to the next level$20.74
- PRW®Pushrod GuideplatesPushrod Guideplates by PRW®. PRW Pushrod Guide Plates are heat-treated steel alloy and a must have for todays high performance engines. Guide plates reduce the unwanted sideways motion of the pushrod under load. This keeps the rocker...Made from heat-treated steel alloyBlack oxide coated to resist corrosion$22.80 - $49.00
- ACDelco®Genuine GM Parts™ Push Rod Guide PlateGenuine GM Parts™ Push Rod Guide Plate by ACDelco®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$6.71 - $21.11
- ACDelco®Genuine GM Parts™ Push Rod Guide Plate (12562369)Genuine GM Parts™ Push Rod Guide Plate (12562369) by ACDelco®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$6.71
- Melling®High Performance™ Push Rod Guide Plate (MGP1084)High Performance™ Push Rod Guide Plate (MGP1084) by Melling®. Melling lists several GM and Ford guide plate applications as a part of the Melling select program. Melling select guide plates are manufactured from high quality heat...Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability$11.67
- Melling®High Performance™ Push Rod Guide Plate (MGP1074)High Performance™ Push Rod Guide Plate (MGP1074) by Melling®. with 7/16" Mount Hole. Melling lists several GM and Ford guide plate applications as a part of the Melling select program. Melling select guide plates are manufactured from...Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability$21.56
- Melling®High Performance™ Push Rod Guide Plate (MGP1014)High Performance™ Push Rod Guide Plate (MGP1014) by Melling®. Melling lists several GM and Ford guide plate applications as a part of the Melling select program. Melling select guide plates are manufactured from high quality heat...Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability$12.97
- Pioneer Automotive®5/16" Flat Push Rod Guide Plate (821002)5/16" Flat Push Rod Guide Plate (821002) by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your vehicle and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$40.18
- Pioneer Automotive®Push Rod Guide Plate (821001)Push Rod Guide Plate (821001) by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$20.74
- COMP Cams®Flat Push Rod Guide Plate (4808-1)Flat Push Rod Guide Plate (4808-1) by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering staff. It...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$7.95
- COMP Cams®Flat Push Rod Guide Plate Set (4851-8)Flat Push Rod Guide Plate Set (4851-8) by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$31.95
- COMP Cams®Flat Push Rod Guide Plate Set (4818-8)Flat Push Rod Guide Plate Set (4818-8) by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$24.95
- COMP Cams®Flat Push Rod Guide Plate Set (4810-8)Flat Push Rod Guide Plate Set (4810-8) by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$24.95
- COMP Cams®Flat Push Rod Guide Plate Set (4808-8)Flat Push Rod Guide Plate Set (4808-8) by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$24.95
- COMP Cams®Raised Push Rod Guide Plate Set (4838-8)Raised Push Rod Guide Plate Set (4838-8) by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$54.95
- COMP Cams®Raised Push Rod Guide Plate Set (4804-8)Raised Push Rod Guide Plate Set (4804-8) by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$65.95
- COMP Cams®Raised Push Rod Guide Plate Set (4803-8)Raised Push Rod Guide Plate Set (4803-8) by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$59.95
- COMP Cams®Raised Push Rod Guide Plate Set (4834-8)Raised Push Rod Guide Plate Set (4834-8) by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$60.95
- COMP Cams®Raised Push Rod Guide Plate Set (4820-8)Raised Push Rod Guide Plate Set (4820-8) by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$54.95
- COMP Cams®Raised Push Rod Guide Plate Set (4806-8)Raised Push Rod Guide Plate Set (4806-8) by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$54.95
- COMP Cams®Raised Push Rod Guide Plate Set (4802-8)Raised Push Rod Guide Plate Set (4802-8) by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$30.95
- COMP Cams®Raised Push Rod Guide Plate Set (4800-8)Raised Push Rod Guide Plate Set (4800-8) by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$30.95
- COMP Cams®Two-Piece Adjustable Flat Push Rod Guide Plate Set (4835-8)Two-Piece Adjustable Flat Push Rod Guide Plate Set (4835-8) by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$76.95
- Crane Cams®Guide Plates (36650-1)Guide Plates by Crane Cams®. High-performance engine builders and street tuners who crave for maximum performance out of their vehicle, choose these top-grade performance products painstakingly designed by Crane Cams. Revel in an...Designed to unlock more performance out of your vehicleBump up engine power to the next level$20.74
- PRW®Stepped Push Rod Guide Plates (1145400)Stepped Push Rod Guide Plates (1145400) by PRW®. PRW Pushrod Guide Plates are heat-treated steel alloy and a must have for todays high performance engines. Guide plates reduce the unwanted sideways motion of the pushrod under load. This...Made from heat-treated steel alloyBlack oxide coated to resist corrosion$49.00
- ACDelco®Genuine GM Parts™ Push Rod Guide Plate (12551399)Genuine GM Parts™ Push Rod Guide Plate (12551399) by ACDelco®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$21.11
Valves allow gases to flow in and out of the cylinders, and seal the combustion chambers so compression can develop. They open and close in response to the lobes on the camshaft via the valvetrain. The air/fuel mixture flows in when the intake valve opens, and the spent exhaust gases flow out when the exhaust valve opens after the power stroke. Every engine has at least one intake and exhaust valve, while many have a pair of each.
Valvetrains differ according to camshaft location. On Over Head Valve engines the cam is in the cylinder block. On Over Head Cam engines one or two cams are on the cylinder head. On OHV engines lifters ride on the camshaft lobes, pushrods transfer motion up to the cylinder head, and rocker arms pivot on shafts or studs actuating the valves. OHC valvetrains may have pivoting rocker type followers and lash adjusters or buckets between the cam and valves.
Valvetrain problems are often caused by excessive clearance. As cam lobes, lifters/followers, pushrods, and rocker arms wear, clearance is increased. Once clearance starts to increase, the pounding experienced by each component becomes greater as the lash opens and is taken up during valve operation. This can result in bent pushrods and broken rocker arms. The most common valve failure is overheating, especially on exhaust valves, which causes the valve to “burn” and distort and/or crack.
Miles and engine heat can also take their toll on valve springs. The valve springs must have enough pressure to keep the valves closed and maintain valve lash. Seat pressure is usually 70-90 lbs. on a stock engine with open pressure at 200 lbs. or more. Weak valve springs can’t exert the proper amount of pressure, which can cause misfire and loss of power as engine speed increases, resulting in “valve float”, where the valves fail to close. In extreme cases valve float can allow the valves to contact the pistons on some engines, bending or breaking the valves and cracking or breaking the pistons.
Performance valvetrain components must be much stronger to function at high RPMs and overcome stiff valve spring pressure to open larger valves. Higher valve spring pressure is needed to prevent valve float at high RPM. Performance rocker arms and valve spring retainers are made of lighter materials to enable the engine to rev easier and achieve higher RPM, and components like roller lifters and roller rockers reduce power-robbing friction. Most performance pushrods are made of strong chrome moly steel, and larger diameter pushrods are available for some applications. No matter whether you’re looking for a stock replacement or a performance unit, we are your one-stop shop.
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