{"product_id":"evolution-retro-fit-hydraulic-roller-lifters-for-holden-engines","title":"Evolution Retro-Fit Hydraulic Roller Lifters For Holden Engines","description":"Evolution Hydraulic Roller Lifters with Hydraulic Cartridge Technology (HCT) are a revolutionary patented tappet. Not just an Original Equipment replacement,  they are an all-new bespoke design started from a blank canvas developed specifically by COMP Cams to meet the demanding performance and durability our customers desire for their modern and performance street engines. The HCT and proprietary manufacturing processes of these lifters ensure precision and longevity that exceed any lifter on the market.A combination of a self-contained, drop-in hydraulic cartridge within a thick-wall lifter body and accompanying reduced oil volume less affected by aeration delivers the most consistent bleed rates between each lifter. The smaller volume within the hydraulic cartridge creates one of the most responsive and quietest lifters on the market today. Startup noise is greatly reduced, and a precision-controlled bleed-down rate ensures excellent performance at high RPM. The cartridge design also allows for an incredibly stiff lifter body, greatly reducing body distortion and further ensuring consistent hydraulic performance. Other features include increased duration and lift to the camshaft and two oiling features. Another industry first, the hydraulic element of this patented lifter is serviceable, allowing anyone to rebuild lifters in their garage.This set of Evolution hydraulic roller lifters for Holden engines features a seat height of 2.63 inches and 0.125 inches of travel with needle-bearing wheels.\r\n\u003cul\u003e\t\u003cli\u003eA combination of self-contained hydraulic cartridge and accompanying reduced oil volume that is less effected by oil aeration delivers the most consistent bleed rates between each lifter.\u003c\/li\u003e\r\n\t\u003cli\u003eThe smaller volume within the hydraulic cartridge creates one of the most responsive and quietest lifters on the market.\u003c\/li\u003e\r\n\t\u003cli\u003eThe patented cartridge lifter provides most consistent performance of any set of lifters in the aftermarket.\u003c\/li\u003e\r\n\t\u003cli\u003eStartup noise is greatly reduced and a precision controlled bleed down rate ensure excellent performance at high RPM.\u003c\/li\u003e\r\n\t\u003cli\u003eThe patented cartridge design also allows for an incredibly stiff lifter body\u003c\/li\u003e\r\n\t\u003cli\u003egreatly reducing body distortion and further ensuring consistent hydraulic performance.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cb\u003eVehicle Specific\u003c\/b\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eHolden V8 1969-1999253-308-350\u003c\/li\u003e\r\n\r\n\u003c\/ul\u003e\r\n\u003ch3\u003eAttributes:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eBrand Name: \u003c\/b\u003eCOMP Cams\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eGTIN: \u003c\/b\u003e00036584001010\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eLifter Body Diameter: \u003c\/b\u003e.842\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eLifter Finish: \u003c\/b\u003eGround\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eLifter Seat Cup Diameter: \u003c\/b\u003e5\/16\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eLifter Seat Height: \u003c\/b\u003e2.630\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eLifter Style: \u003c\/b\u003eHydraulic Roller\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eLifter Travel: \u003c\/b\u003e0.125\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eLifter Wheel Diameter: \u003c\/b\u003e.700\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eOil Band Bottom: \u003c\/b\u003e.93\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eOil Band Top: \u003c\/b\u003e1.42\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eRecommended Preload: \u003c\/b\u003e.075\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eRetention Method: \u003c\/b\u003eLinkbar\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eRoller Type: \u003c\/b\u003eNeedle Bearing\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003eExtended Information:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eCountry of Origin: \u003c\/b\u003eUS\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eEmissions : \u003c\/b\u003eEmissions Compliance Exempt\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eLife Cycle Status: \u003c\/b\u003eAvailable To Order\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003ePacking Information:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eQuantity of Each: \u003c\/b\u003e16\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003ePackage UOM: \u003c\/b\u003eEA\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eDimension: \u003c\/b\u003e7 x 5.5 x 3 inches\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eWeight: \u003c\/b\u003e6 POUNDS\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cdiv id=\"sema-product-fitment\" class=\"product__accordion accordion fitment\"\u003e\u003c\/div\u003e","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":44334473052205,"sku":"BDQQ-85331-16","price":1453.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0646\/2780\/2157\/files\/COMP_85331-16_LIFTERS_Evolution-HCT-Holden-Roller_V2.jpg?v=1762858116","url":"https:\/\/montgomeryparts.com\/products\/evolution-retro-fit-hydraulic-roller-lifters-for-holden-engines","provider":"Montgomery Parts","version":"1.0","type":"link"}