#INDEXING HARLEY EVO CAMSHAFT PLUS#

Our tappets have a lower pushrod seat to help straighten out pushrod angles. Velva Touch hydraulic lifter kits include blocks that feed each tappet a steady supply of oil unlike stock and other manufacturers set ups where one tappet is fed oil and has to fill and pressurize then oil bleeds over to fill and pressurize the next tappet. Please contact us if you have any questions or need help determining what will work in your application. You can also run OEM Evo rocker arms or Evo roller rocker arms in your Shovel by using special stepped spacers and get the specified lift listed for the Evo cam.

You can use your stock Shovel arms with an Evo cam but will loose approximately 9% of the Evo cam specified lift due to the rocker arm ratio difference between the Shovel and Evo. Nobody will be able to look at them and tell you are running an Evo cam. The Shovel/Evo cam kits are bolt in and are identical in appearance to the Shovel cam blocks. If you would like to change the oiling option at a later date you would only need to purchase a 65.00 kit that includes new lower cups,snap rings,pushrod adjusters and nuts. You have the choice of Shovel or Evo oiling at no additional charge. Additional pictures available upon request. Item will be assembled and shipped after you have chosen your options. Please research this subject if you are not familiar with its numerous advantages. Evo grind cams for 53-69 models are available from S&S,Leineweber,Woods and Black Widow Cams. Pushrods can be installed and removed with ease and without any other disassembly. You must check clearances for whatever cam you choose and match the gear pitch of the cam gear to the pinion and breather gear being used. Running an Evo cam in a Shovel is basically a bolt in operation with this kit.

#INDEXING HARLEY EVO CAMSHAFT PLUS#

Take advantage of over 30 plus years of advancement in camshaft technology with many more cam choices compared to the same old limited ancient Shovel cams available. If you are in need of a cam and lifters the Evo conversion kit makes the most sense. Did you know that every complete S&S Panhead and Shovelhead engine sold has an Evo grind cam in it. You will have your choice of Shovel oiling (using original external lines) or Evo oiling (oiling the top end up the pushrods) To use the Evo oiling option you must use rocker arms drilled to accept oiling up the pushrods.(Example:Jims,S&S roller rocker arms or OEM Evo and Jims,S&S Evo roller rocker arms) Lifter blocks are made of cast iron for longevity. Velva Touch lifters have been on the market for over 25 years and have proven to be the best available. The Shovel/Evo cam kits are designed to allow you to run Evo grind camshafts in 53-65 Panheads and 66-84 Shovelheads Inlet Valve Mach Index Calculator Piston Diameter : It all gets too complex for a simple calculator.We left valve Increasing valve size and lifts has the effect of lowering the Mach You can, however, plan your engine setup around the Mach and rpm You will quickly see Harley engines are not high rpm designs. Testing on a wide variety of engines was undertaken to come up with aįlow coefficient at various lifts and crankshaft angles.TheseĬorrection factors gave better predictions of the actual Mach Index.įor simplicity sake use.

Velocity and the area of the valve opening. There is a poor correlation between piston bore diameter, piston Harley Stock Twin Cam 88: Piston Diam 3.75 Valve Diam 1.8 Stroke 4.000

Harley Stock Evo Big Twin: Piston Diam 3.498 Valve Diam 1.8 Stroke 4.250

Indexing harley evo camshaft