20839: JIM S POWER GLIDE TAPPET BLOCK KIT. INCLUDES FOUR TAPPETS FRONT AND REAR TAPPER BLOCKS MOUNTING SCREWS AND GASKETS. FITS BIG TWINS 1953 TO 1984 (OEM: 1029-53B) | ||
![]() Picture may not correctly represent this product. | By Jims Machining Panhead or Shovelhead engines can now have all the benefits of the hydraulic tappets fitted to Evo-lution engines eliminating the total oil loss of the stock hydraulic units. Made of 7075-T651 alumin-um rated at 83,000 psi, twice as strong 6061-T6 aluminum. Capable of the highest rpm's engines can safely turn, at a valve lift of .700". Machined to the center line of the cam and held to a tolerance of .002". Bores are held .0002" perpendicular to the mounting flange. Includes front and rear tappet blocks, 4 Big Axle Power-glideTM tappets, tappet block gaskets and instructions. Shipping dimensions: 4.25" x 9.50" x 3.25" Approximate Weight: 2.68 lbs | Checking stock and price
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