It is possible to use the OE lifters and tie bars in an older 2-piece rear main seal block, but you must drill and tap holes in the lifter valley for the spider, which is a major hassle. Buy It Now. Perhaps one of the best deals on the planet for a small-block hydraulic roller cam is the GMPP Hot hydraulic roller cam package that can be purchased in several different configurations. Never combine guided rocker arms with pushrod guideplates. BRAND. If you plan on building more than one engine, think about the major advantages of using one of the larger-diameter professional degree wheels. JavaScript seems to be disabled in your browser. $141.99 $ 141. Don’t use a roller lifer on a flat tappet cam or vice versa. On a 3/8-inch stud using 24 threads-per-inch (tpi), this means that a 1/2–turn on the adjuster from zero lash preloads the lifter by 0.020 inches. At the time of publication, this package runs roughly around $800. Send us a message, and we will try to accommodate your request. You have several options when mounting the degree wheel to the crank snout. Merely turn the crank counterclockwise roughly 50 to 60 degrees and then turn the crank clockwise again until you reach the 0.050-inch closing point. Before the days of these large diameter degree wheels and pro mounts, the next best thing was to use what is called a crank nut. For example, crank gears are often marked with a circle, square, triangle, and other symbols not obvious of what they represent. Now, start by tightening the lash on the exhaust by 0.004 inches (to 0.016 inches total) and evaluate the power. DEGREE WHEEL,18 IN Item Weight 4.07 pounds Product Dimensions 18.5 x 19 x 0.5 inches Item model number 62191 Is Discontinued By Manufacturer No Manufacturer Part Number 62191 OEM Part Number 62191 Cover Included DEGREE WHEEL,18 IN While some may think that this process requires a pile of expensive tools, you can do it very easily with a degree wheel, a crank nut, dial indicator and magnetic base, and a length of coat hanger wire— that’s it. Simply right click on the above degree wheel and save a copy. Be aware that they don’t all read out the same way. For example, if the wheel rotated counterclockwise 23 degrees and clockwise for 21 degrees you have a 44 degree arc Split this figure and you have 22 degrees. The 360 degree marks are cut after anodizing to produce highly contrasting lines. Then turn the wheel and see if the degree wheel reads the same number of degrees “off” the 90s at each of the four locations. One of the first things that you will need is a degree wheel, this will tell you EXACTLY where you are at when you turn the engine over. Either of these situations is easy to fix. Worse yet, one change may cancel out the other and then you miss an opportunity entirely. Clean the new camshaft and lube all the cam lobes with the break-in lubricant supplied by the manufacturer. As we mentioned in Chapter 2, Chevy converted from flat tappet hydraulic cams to hydraulic rollers beginning in 1987. This is easy to see because the lifter’s rate of change on the dial indicator slows down. If the degree wheel reads' 40 degrees from T.D.C. We have seen at least three different degree wheel designs and more probably exist. This kit includes the cam, 1.6:1 roller rockers, springs, retainers, shims, and keepers. Most cam cards indicate this position for the intake at BTDC. Mr Gasket 1570 Universal Degree Wheel. The extra large wheel makes it a lot easier to dial the numbers in. Even the pro model snout mount has some slack, and it’s best to be sure. With the lifter on the base circle of the cam, slowly turn the engine clockwise until the dial indicator reads 0.050 inches of lifter rise and jot down the position of the degree wheel. It is just the degree wheel that comes, for the price and my laziness to make one this is a good deal. This means your camshaft is actually two degrees retarded since it is opening and closing two degrees later than indicated on the cam card. The best procedure for checking cam thrust clearance is to use a custom timing-chaincover that allows you to place a dial indicator plunger directly on the cam gear. The best degree wheel mount we’ve found is one sold by Powerhouse and COMP Cams. Before we start with the cam degreeing, it’s also a good idea to check that all the lifters fit their lifter bores without sticking and can rotate easily in their bores. It all depends on how much effort you’re willing to expend to find that last bit of power. Degree wheel download Another option is to make a timing tape as described below. Unfortunately, the degreeing process requires you to turn the engine counterclockwise, which loosens the crank bolt and allows the degree wheel to turn, which only serves to cause frustration. Do not put heavy moly lube on a roller cam lobe. Skip to the beginning of the images gallery, By removing the crank hub or balancer and using a Moroso Crankshaft Socket Tool, engine builders have a positive way to turn over the engine, Tool makes it easier to locate TDC and BDC when degreeing camshafts, Broached keyway allows the socket (which fits 1/2" drive) to slide over the crankshaft snout and key. Remember that since intake closing is the most important of the four-valve positions, by moving the cam ahead, we have also moved to an earlier intake closing point. For years, everyone has been using hydraulic flat tappet and roller cams for the street because they didn’t want to be slaves to lashing valves. This is a full 7" diameter degree wheel. 4.0 out of 5 stars Ok. If you don’t have a cam tool, you can use a length of 5/16-inch threaded rod. A good handle also saves nicks and bumps on the cam bearings. Hardware for the dial indicator is top choice, Highly recommend Read more. Estimated Ship Date: Today. Then record the number on the degree wheel. This heavy paste can actually block oil to the lifter and cause a premature failure. The whole reason for these specialty tools is a quest for accuracy. If the power didn’t change or we lost some peak power, then we know we don’t need more exhaust duration, but there’s still one more test. Count 22 degrees from either outboard mark and mark this new spot on the degree wheel. You also need some kind of pointer for the degree wheel. This much preload makes it far easier for the lifters to “pump up” and cause problems. Some of the degree wheel kits use custom mounts for the dial indicator, but the magnetic bases are inexpensive now and they’re the easiest to use. All the major cam companies sell a complete cam degree kit, such as this kit from COMP. You can also use offset bushings in the cam gear if you don’t have a multi-keyway crank sprocket. Keep in mind that when you remove the crank gear, this means removing the degree wheel from the crank snout. Be careful to match up the mark on the crank gear keyway with its proper mark on the crank tooth to ensure the cam is actually in its correct position. This could cause a binding situation guaranteed to cause some destruction and lots of metal filings in the oil. All you need to complete the kit is pushrods, assuming you already have the eight factory tie-bars and “spider.”. Comparing the opening and closing points of the intake valve against the manufacturer’s cam card, you now know exactly where Number One intake lobe is timed relative to piston Number One and therefore the rest of the engine. This mount was originally designed for use with those large-diameter professional degree wheels, but smaller wheels that also accommodate this larger crank mount are available. These crank nuts are inexpensive, but you quickly learn that the nut requires an expensive adjustable wrench in order to turn the engine over. The Hot cam is least expensive when using tall OE-style hydraulic roller lifters. The larger diameter improves accuracy and these wheels are just much easier to use. If not, find out why before you continue. Top Rated Seller Top Rated Seller. There are two types of piston stops, one for the cylinder head off the engine and the other for when the head is bolted on. What you discover is that it takes more time to set everything up than it does to actually determine where the cam is positioned. Let’s say that the numbers are 24 degrees BTDC and 20 degrees ATDC. Conversely, if your numbers indicate an opening at 36 BTDC and a closing of 64 ABDC, then the cam is advanced by two degrees. You can use this tool to establish accurate pushrod length and also to measure total travel of the rocker tip across the valve tip. If you want to use a stud girdle, keep in mind that you have to loosen the girdle bolts in order to change lash and then tighten it back and recheck the lash because lash changes with the girdle tight. The cool thing about these kits is that most street roller cams, especially the hydraulic roller versions, require no special machine work. You also need a dial indicator to measure lifter rise and combine that with a magnetic base. The heavy engine lube or moly paste helps prevent galling or damage to the gear during the break-in process. Written by Graham Hansen and Posted with Permission of CarTechBooks. The degree wheel pointer can be as slick or as simple as you like. COMP Cams (8) Mr. Gasket (1) Proform (4) This is a test. This is also a good place to lobby for poly locks for all small-blocks, regardless of the style of rocker arm you’re using. Assembly in a car is exactly the same except that you have to deal with cramped quarters and perhaps have to remove some of the car’s sheetmetal to squeeze the cam in through the front. Even the cam drive ends up being the same. Even with the pro model snout that locates on the keyway, you must always re-establish TDC just to be sure. Look at your cam card, if the opening and closing numbers are given at a checking height of 0.015 inches for example (this is a mechanical lifter cam), then rotate the engine clockwise until the dial indicator reads 0.015. The Number One intake lobe on all small-block Chevys is the second lifter from the front. Once we have TDC set, now use your fabricated lifter or cam follower along with the dial indicator and magnetic base to read lifter movement. 57. The trick is to drill the back of the cam gear only deep enough so that the bushing is captured and flush with the back of the cam gear. Just be sure to move the valve with the spring as a unit. This tool requires the degree wheel to have a large center opening for the mount, which means you may have to buy a new degree wheel to match. If MPH goes up, you’re working in the right direction. Even if you don’t buy the GMPP Hot cam, you can still enjoy the benefits of the one-piece, hydraulic roller cam block by minimizing your investment. If peak power improves, it’s because of the later closing exhaust and increased overlap, which means we probably lost a little low-speed torque as well. The degree rings are profiled to match the crank hubs for a positive lock and consistent orientation of the degree marks. It may seem obvious, but always use the correct style of lifter when degreeing the cam. Once the bearings are installed, take the time to install the cam before the final assembly procedure. It’s possible that an efficient exhaust port in a set of aftermarket heads don’t need as much exhaust duration. Summary: A must have engine building tool that makes it easier to turn motor over while degreeing cam. We are open and shipping daily. Make sure all 16 lifters fit snugly in their bores without hanging up or sticking. Start by installing the cam correctly, then go about using the tools already in place with the engine to finetune it to make more power. Or you can make your own out of a piece of scrap steel or aluminum with a center-mounted bolt and nut as a stop. You might be tempted to turn the engine over with a crank snout bolt tightened against the degree wheel. Soaking them overnight is a good idea. 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