You can see from the specs above the cam bearings are basically identical P-4 standard DUR-PP-4T coated, SOME use PB-9 check carefullyĬross reference- ACL: 5C292 CLE: SH- 292S DUR: P-4 FMO: 1220M TAKE THE EFFORT TO MEASSURE AND VERIFY BEARING LOCATIONS AND CLEARANCESĬam Bore: 2.140 inches (number-1), 2.130 inches (number-2 and number-5), 2.120 inches (number-3 and number-4) cam bearing inside diameter: 1.950 inches
(VERIFY CAREFULLY WITH YOUR APPLICATIONS NEEDS WITH YOUR SUPPLIER)
The correct cam bearings for the engine you have is very impotent some take a grooved rear cam bearing #396 Clevite SH615S 65-66 only!!! Taking the effort to be observant, measure, and ask questions rather than just jamming parts in anyplace, will save you from making lots of expensive mistakes noticing the location of oil feed holes, and taking pictures and notes, on the outer and inner dimensions and that generally one edge is beveled to make installation easier, note that some cam bearings have a reverse side oil feed groove while other brands do not! notice that the oil feed passages and main cap grooves tend to measure differently and not all bearings fit all locations Get into the habit of taking notes, examining details and measuring the cam bearings. Thinking and potentially custom clearancing or at least reading the instructions,Īnd as most experienced engine builders will tell you ,Īlmost nothing you can buy fits and functions correctly in out-of-the-box, conditionĬarefully, inspected, and correctly clearanced, and fitted. Instead of acting logically and actually measuring, Invariably involve, throwing away some component,Īnd installing some new out of the box part,
So many guys seem to be under the absurd impression that any and all solutions, Yes it involves knowing how components are intended to function and accurate precision measurement and access to some specific tools and a skilled well equiped machine shop you can trust, is a mandatory factor and skill set. for at least one and frequently several locations in the block so they must be located in the matched locationsĮngine building is about 75% technology and science and 10% art, and 15% skill gained through experience,over time.ĭoing it successfully mandates the person involved, in the process, can accurately observe, think, and recognize problems,Īnd if required, stop and think up solutions.
#Corvette ls1 cam bearings how to
Youll need a cam bearing installation tool or your local machine shop can install the bearings for you, if your not doing this regularly, have them do it, as its cheaper and easier,on a one time install basis, but if you are doing it frequently GET a decent tool and learn how to use it, keep in mind its MANDATORY that the oil feed holes in the block align with the feed holes in the cam bearings once they are installed ,but theres an oil feed groove that is machined in the block under some bearings and may not be under others, be observant, think things through ,that must be lined up with the oil feed hole, from an engineering perspective the ideal location for the oil feed holes to provide the max cam journal support are indicated in the diagram posted below and most cam bearing sets come with instructions, in most cases that locates the cam bearing feed hole in the 12o,clock to -2 o,clock location with the block in its normal orientation,THIS IS WHERE THE CAM BEARING MANUFACTURERS SUGGEST YOU INSTALL THE BEARINGS FOR MAXIMUM CAM JOURNAL SUPPORT AND DURABILITY ,AS THIS LOCATION ALLOWS THE MAX OIL WEDGE SUPPORT TO BE FORMED AND MAINTAINED, AS THE ENGINE RUNS, you certainly don,t want the oil feed hole located where the max oil film support needs to be or in a location restricting flow to the bearing, but read thru the links provided, and be aware that the cam bearings are FREQUENTLY a different diam.
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