Get IN TOUCh - Lunati Power

1 OUR HISTORY. THE RACER'S COMPANY. Winning racers don't find victory lane by accident. It takes dedication, knowledge, drive and Power to beat your competition. At Lunati , we have racing pumping through our veins. Our determination and dedication to supply enthusiasts with superior internal engine components is unmatched in the aftermarket industry. For over 40 years, we have proven this on race tracks and streets all over America. So when the time comes to upgrade your engine, you can count on Lunati 's one-on-one customer service and premium parts to put the competition in your rearview mirror. IT'S WHO WE ARE. At Lunati , we understand that as a racer or engine builder, you need valvetrain and bottom end components that can handle extreme race conditions and produce race winning Power levels. We also know how important it is for our products to be backed by real people who provide personalized customer support.

2 In 1969, Joe Lunati founded this company on a philosophy that continues to this day to produce a diverse, race-proven product line that includes camshafts and related valvetrain products, pistons, connecting rods and crankshafts. We employ a knowledgeable, in-house tech support team that is ready to work directly with you, no matter how large or small your request. Get IN TOUCh Contact us by one of the means listed below with technical questions or to purchase parts. That's right unlike the big guys, we'll work with and sell directly to you. Customer Support Line: (662) 892-1500, , 7am-6pm CST. Website: (Live Chat Available). Email: Facebook: Twitter: 2 :: Table of Contents TABLE OF CONTENTS. Valvetrain section Timing Sets Adjustable Cam Gear Camshafts Adjustable Timing Camshaft Tech resources Cam Steps To Selecting A Lunati Cam Lock Camshaft Part Number Cam Phaser Limiter Camshaft Tech Degree Kits And Components Distributor Camshaft Master Footnote Double Roller Timing Camshaft Upgrade Double Row Timing AMC.

3 14 Gear GM LS Timing Single Roller Timing Race Timing Thrust Bearings/Wear Thrust Harley Valve Springs Valve Spring Tech Lash Specialty Lifters Oil Hydraulic Rev Seat Solid Valve Spring Valve Pushrods Miscellaneous section Rocker Arms Apparel ..330. Aluminum Rocker Driven Racing Guide Rocker Steel Rocker Stud looking for rotating assembly components? If so, Lunati has you covered. This catalog is only a listing of Lunati VALVETRAIN components please call us at 662-892-1500 to order your complete rotating assembly or rotating components today. Tech Support: 662-892-1500 :: 1. FOOTNOTE INDEX. Camshaft Master Footnote Listing 1. Requires machining on cylinder heads. 15. Requires screw-in studs and guide plates. 2. Adjustable valve train required. 16. 1962-69 use part #5024-16. 3. Includes 4 groove valve locks. For single groove see valve 17. Timing set accomodates one-piece fuel pump eccentric.

4 Lock or spring kit section. 18. Requires distributor gear upgrade. 4. Use lifter part #70998-16 for oiling through the pushrods. 19. For engines with multi-groove valves, see spring kit or valve 5. Valve locks consist of 1/2 set 2 groove; 1/2 set 4 groove. For lock section. single groove see valve lock or spring kit section. 20. Fits only certain years. 6. Pre-1968 use part #71812-16 hydraulic lifters. 21. Part #80775-16 only works with non-adjustable factory 7. Engines with self-aligning rocker arms must use part rocker arms, use part #5600-16 for adjustable rockers. # 85340-16. 22. Works in 1964-88 models only. 8. Requires upgraded gear, thrust button and wear plate. 23. Fits 260-403 engines only. See pushrod section for 400, 455. 9. 1992-1994 LT1/LT4, use part #92126; 1995 and up, use part engines. #92128. 24. Camshaft retaining plate part #90212 recommended. 10. Requires thrust button and wear plate.

5 25. Fits 1964-88 models only. 1989 and up, use .312" diameter 11. Includes Torrington roller thrust bearing. valve stem and bead style locks. 12. Truck engines have .400" taller block. 26. Kit does not include timing set. 13. Most aluminum heads come standard with 11/32" valve 27. Kit includes springs, retainers, locks, seals and locators. stems. Use appropriate valve locks, retainers, and seals. 28. Timing set accomodates two-piece fuel pump eccentric. 14. Requires part #86005-16 stud kit except on factory aluminum heads. NOTE. On all camshaft charts on pages 14-271, there is a column labeled Pre-2011 Cam #. In 2011, Lunati transitioned to a SMART part numbering system, however, the pre-2011 cam numbers can still be referenced when using this catalog and ordering. 2 :: Lunati incorporates over 40 years of experience into every camshaft design to create the most technologically advanced cams on the market today, with more throttle response, quicker acceleration and bigger horsepower numbers.

6 From the Voodoo series of camshafts that deliver more area under the curve than any other series of camshafts, to the budget- friendly BareBones series that will boost horsepower without breaking the bank, Lunati carries a camshaft to fit every racer's need. CAMSHAFT TECH INFO. Types of Camshafts & Lifters CAMSHAFTS. Hydraulic Flat Tappet Hydraulic flat tappets are self-adjusting due to the valve controlled plunger within the tappet body. It operates to pre-load the pushrod by using oil system pressure to maintain this pre-load in the closed valve position. Hydraulic tappets are quieter than solid tappets since there is no lash or free-play. However, it is generally agreed that they fall short of offering optimum performance above 6000-6500 RPM. Many cheaper designs fall even shorter than this. This poor performance at high RPM is due mainly to the inability of the lifter to bleed down the excess oil pressure and doesn't allow the valves to seat.

7 Hydraulic Roller lifters The hydraulic roller tappet camshaft can provide the best of both worlds. All Late Model engines have used this design since the mid to late 1980s. They provide most of the virtues of a solid/mechanical roller tappet while providing the benefits of quiet operation and ease of valve lash setting. This type of design still has the limitations of an oil bleed-off control type follower. If your application requires high RPM potential you should use a solid roller design. Solid/Mechanical Flat Tappet VALVE SPRINGS. The solid/mechanical tappet is essentially a solid link between the cam lobe and the pushrod. In most cases, it is a simple heat treated cylinder with a radiused contact face. It allows more RPM potential than that of the hydraulic tappet since there are no worries about the inability of the lifter to bleed down. Solid lifters do, however, require lash or clearance to allow for part expansion as the engine heats up.

8 Solid/Mechanical Roller The solid/mechanical roller tappet allows for the most aggressive lobe designs. Roller tappets allow faster, steeper . opening and closing ramps. This allows the cam to produce more lift for a given duration. They are not limited to a particular lifter diameter to obtain higher cam lifts. They also contain a roller that reduces friction between the cam and followers. ROCKER ARMS. Roller cams require the use of higher valve spring forces, making high engine speeds (over 10,000 RPM) possible. Flat Tappet vs. Roller Manufacturers and racers have used flat tappet camshaft systems over the years with great success. However, most favor roller tappet cams (when rules permit their use) because roller cams have distinct advantages over flat tappets. Friction PUSHRODS. Sliding frictional forces are higher than rolling frictional forces. Therefore, a roller cam takes less horsepower to turn and generally does not wear out as quickly.

9 An added benefit is that roller tappets do not require replacement when changing cams. And, if pop-up solid roller tappets are used, the cam can be swapped without removing the intake manifold. Profile If a cam profile has more area under the curve it has the potential to make more Power and torque. Roller profiles can be more aggressive and accelerate the tappet more than a flat tappet profile. Flat tappet profiles can only be shaped up to the point where the tappet digs into the profile. Roller tappet profiles are not limited by this condition so much so that timing sets even inverted radius profiles are possible. This benefits engine performance in two ways: more tappet lift can be achieved without the added duration that would normally be required to ramp up a flat tappet to the added lift making the curve more pointy; the lift curve can be made broader without increasing lift.

10 Of course, both of these benefits can be combined to create a profile that can easily outperform flat tappet cams. Cost miscELLANEOUS. Unfortunately, roller camshaft systems cost more than a flat tappet cam and lifters. Much of the added cost is due to the lifters. However, roller tappets can be reused, whereas flat tappets can not. If you tear down your engines frequently, the rollers can be used over and over again, provided they are not damaged or show signs of wear. 4 :: CAMSHAFT TECH INFO. Should I Install New Lifters with My New Camshaft? CAMSHAFTS. If you are installing a new flat tappet camshaft in your engine, you MUST install new lifters. The lifter/lobe contact area is under a tremendous amount of pressure, and the lifter and lobe must establish a rotating pattern together. The following illustration demonstrates why: NEW CAM WITH NEW CAM WITH. NEW LIFTERS USED LIFTERS.