Camshafts
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- ACDelco®GM Genuine Parts™ Engine Camshaft Dowel PinGM Genuine Parts™ Engine Camshaft Dowel Pin by ACDelco®. GM Genuine Parts Multi Purpose Pins are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts...Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors$6.96 - $7.75
- ACDelco®Genuine GM Parts™ Camshaft Dowel PinGenuine GM Parts™ Camshaft Dowel Pin 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 your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$3.08 - $4.62
- Mopar®Engine Camshaft Dowel PinEngine Camshaft Dowel Pin by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing technology to...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$3.59 - $9.88
- ACDelco®GM Genuine Parts™ Multi-Purpose Pin (12554553)GM Genuine Parts™ Multi-Purpose Pin (12554553) by ACDelco®. GM Genuine Parts Multi Purpose Pins are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts...Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors$7.75
- ACDelco®GM Genuine Parts™ Multi-Purpose Pin (24575061)GM Genuine Parts™ Multi-Purpose Pin (24575061) by ACDelco®. GM Genuine Parts Multi Purpose Pins are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts...Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors$6.96
- ACDelco®Genuine GM Parts™ Camshaft Dowel Pin (55556593)Genuine GM Parts™ Camshaft Dowel Pin 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 your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$4.62
- Mopar®Engine Camshaft Dowel Pin (MD158443)Engine Camshaft Dowel Pin by Mopar®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Carefully crafted from premium materialsExcellent corrosion and wear resistance$3.59
- ACDelco®Genuine GM Parts™ Camshaft Dowel Pin (11547256)Genuine GM Parts™ Camshaft Dowel Pin 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 your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$4.10
- ACDelco®Genuine GM Parts™ Camshaft Dowel Pin (19316102)Genuine GM Parts™ Camshaft Dowel Pin 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 your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$3.08
- Mopar®Camshaft Dowel Pin (00141195)Camshaft Dowel Pin (00141195) by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing technology...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$9.88
The camshaft, or cam for short, opens and closes the intake and exhaust valves, allowing the fresh air/fuel mixture to enter the cylinder for combustion, and the spent gases to flow out. Most production cams are iron castings that are supported on journals that rotate in bearings, with individual eccentric lobes to actuate each valve. A single cam can be located in the cylinder block, or one or two cams can be mounted on the cylinder head.
On Over Head Valve (OHV) engines, the block mounted cam actuates the valves via lifters that ride on the lobes, pushrods that transfer motion up to the cylinder head, and rocker arms that pivot on shafts or studs. Single Over Head Cam (SOHC) engines operate the valves using followers or pivoting rocker arms, while Double Over Head Cam (DOHC) engines, which have separate cams for the intake and exhaust valves, employ buckets between the cam and valves. The crankshaft drives the cam(s) using a timing chain and gears or timing belt and sprockets, at ½ crankshaft speed. The camshaft must be timed with the crankshaft so that valve opening and closing is perfectly synchronized with piston movement.
OE camshafts are designed for the vehicle’s factory configuration, and if you’ve modified your vehicle and/or have specific performance goals, your engine can produce much more power with an aftermarket performance camshaft. From increased mileage to towing, better street performance and a “lumpy” idle, to all out racing, we have the right grind for every application including hydraulic and solid, flat tappet and roller lifters. Along with the mods listed above, compression ratio, transmission type, differential gearing, and vehicle weight must be factored in when choosing a cam.
Specs will vary, but in general performance camshafts have higher lift to open the valves further, increasing airflow and power. Performance camshafts also typically have longer duration – the valves are open longer, which increases high RPM power. Longer duration is typically accompanied by increased overlap (when both intake and exhaust valves are open), which can enhance cylinder filling at high RPM, but can also result in less vacuum for power accessories at low RPM.
Lobe Separation Angle (LSA), the number of camshaft degrees between the centerlines of the intake and exhaust lobes, is another spec you’ll encounter. In general, a camshaft with a tighter (smaller) LSA makes more torque at lower RPM and increases cylinder pressure; valve overlap is increased, with less idle vacuum and a rougher idle. A wider (larger) LSA reduces maximum torque but the power band is widened and peak torque occurs at a higher RPM. There is more vacuum at idle and idle quality is improved. A cam can also be advanced or retarded during installation to alter the RPM where peak power is delivered.
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