Part Number: SUM-8707 Comprised of two distinct parts, the cams and the shaft, the camshaft is the element that enables valves to open. The camshaft's duration determines how long the intake/exhaust valve is open for, therefore it is a key factor in the amount of power that an engine produces. Performer RPM Camshaft And Lifter Kit #7122 For Small-Block Ford 289-302 V8. Offer excludes truck freight and oversize fees.

Estimated Ship Date: Camshafts are used in internal combustion engines (to operate the intake and exhaust valves),[1][2] mechanically controlled ignition systems and early electric motor speed controllers.


The camshaft uses lobes (called cams) that push against the valves to open them as the camshaft rotates; springs on the valves return them to their closed position. ...Loading The camshaft was described in 1206 by Muslim engineer Al-Jazari.

Valid on orders shipped in the contiguous United States. Higher valve lift can have the same effect of increasing peak power as increased duration, without the downsides caused by increased valve overlap. As engine speeds increased through the 20th century, single overhead camshaft (SOHC) engines— where the camshaft is located within the cylinder head near the top of the engine— became increasingly common, followed by double overhead camshaft (DOHC) engines in more recent years.

This system was mainly used in electric multiple units and electric locomotives. Advancing the camshaft (shifting it to ahead of the crankshaft timing) increases low RPM torque, while retarding the camshaft (shifting it to after the crankshaft) increases high RPM power. [21][22], The timing (phase angle) of the camshaft relative to the crankshaft can be adjusted to shift an engine's power band to a different RPM range. BEST SELLERS.



Camshafts are made from metal and are usually solid, although hollow camshafts are sometimes used. Lift, 113+4 LSA, GM, LS, 3-Bolt, Each. how far open the valve is). Part Number: SUM-1106 Terms of Use | Privacy and Security | Site Accessibility

More Detail... Est. Everything you need for anything you drive.

However, overhead camshaft bearings do not always have replaceable shells, in which case the whole cylinder head must be replaced if the bearings are faulty.

You won’t find a bigger selection of camshafts anywhere else! More specifically, your camshaft is responsible for pulling and pushing air out of the engine for a balanced yet powerful performance. 2102. [21], There are several factors which limit the maximum amount of lift possible for a given engine. $269.95. Add to Wish List Add to Compare.

...Loading Order this item and get free delivery and handling on your entire order! Stage 4 Pro LS Truck Swap Cam, 226/230 112+4, .545 /.545 Lift, 3-bolt, 4.8, 5.3, 5.7, 6.0, 6.2, 7.0, LS1 LS2 LS6 LS7 LS9 LS3 LQ4 LQ9 LH6 LY6, Each. An alternative used in the early days of OHC engines was to drive the camshaft(s) via a vertical shaft with bevel gears at each end. The following alternate systems have been used on internal combustion engines: In mechanically timed ignition systems, a separate cam in the distributor is geared to the engine and operates a set of breaker points that trigger a spark at the correct time in the combustion cycle. A lift value of 0.050 in (1.3 mm) is often used as a standard measurement procedure, since this is considered most representative of the lift range that defines the RPM range in which the engine produces peak power. The method of construction is usually either, This page was last edited on 4 September 2020, at 18:51.

Curbside pickup is preferred. From mild lobe patterns to highly aggressive profiles, we’ve got a broad range of camshaft styles and grinds to meet your performance demands. A camshaft uses egg-shaped “cams” to open and close engine valves (one cam per valve), while a crankshaft converts “cranks” (the up/down motion of the pistons) to rotational motion. Another option was to use a triple eccentric with connecting rods; these were used on certain W.O. [17][19] In general, increasing a camshaft's duration typically increases the overlap, unless the Lobe Separation Angle is increased to compensate. Please check details and hours of operation for your retail store before you visit. The valvetrain layout is defined according to the number of camshafts per cylinder bank. A camshaft, driven by an electric motor or a pneumatic motor, was used to operate contactors in sequence. © 2001-2020 AutoZone, Inc. All Rights Reserved.

More Detail... Camshaft, DOD Delete, 1-Bolt, Hydraulic Roller, GM LS Truck, Each. Camshafts in automobiles are made from steel or cast iron, and are a key factor in determining the RPM range of an engine's power band.

Part Number: SUM-8701 Therefore a V6 engine with a total of four camshafts (two per cylinder bank) is usually referred to as a double overhead camshaft engine, although colloquially they are sometimes referred to as "quad-cam" engines. The bearings of camshafts, similar to those for the crankshaft, are plain bearings that are pressure-fed with oil. The lobe separation angle (LSA, also called lobe centreline angle) is the angle between the centreline of the intake lobes and the centreline of the exhaust lobes. 11/16/2020

More Detail... Est. Stage 2 LS Truck Swap Cam, 218/227 112+2, .523/.524 Lift, 3-bolt, 4.8, 5.3, 5.7, 6.0, 6.2, LS1 LS2 LS3 LS6 LS7 LS9 LQ4 LQ9 LH6 LM7 L96, Each. Camshaft seals are usually made of durable rubber materials that allow them to have a long service life. [15] For OHC and DOHC engines, the camshaft operates the valve directly or via a short rocker arm.[15].
Stage 3 Pro LS Turbo Cam. [19] Secondly, increased lift means a steeper camshaft profile is required, which increases the forces needed to open the valve. More Detail... Camshaft, Hydraulic Flat Tappet, Advertised Duration 303/303, Lift .488/.488, Chevy, Small Block, Each. In a four-stroke engine, the valves are opened only half as often; thus, two full rotations of the crankshaft occur for each rotation of the camshaft. Firstly, increasing lift brings the valves closer to the piston, so excessive lift could cause the valves to get struck and damaged by the piston. [17][19] The power and idle characteristics of a camshaft with the same duration rating that has been determined using different lift points (for example 0.006 or 0.002 inches) could be much different to a camshaft with a duration rated using lift points of 0.05 inches.

Duration, 0.605 in./0.598 in.