Comp Cams Evolution Retro-Fit Hydraulic Roller Lifters For Holden Engines - 85331-16
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.
A 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.
Edelbrock products offer improved performance and aesthetics for a broad array of vehicles and engines. 'Proven performance' is the philosophy by which Edelbrock was founded and it continues to this day with the highest standards for performance and quality. Edelbrock core products are engineered manufactured and tested in the USA to ensure the best quality possible. This is further backed by some of the best warranties in the industry and a highly qualified technical support staff.
The smaller volume within the hydraulic cartridge creates one of the most responsive and quietest lifters on the market.
The patented cartridge lifter provides most consistent performance of any set of lifters in the aftermarket.
Startup noise is greatly reduced and a precision controlled bleed down rate ensure excellent performance at high RPM.
The patented cartridge design also allows for an incredibly stiff lifter body
greatly reducing body distortion and further ensuring consistent hydraulic performance.
When you design and sell the best-engineered performance products in the world
you have to have a rigorous testing program. Why? Without adequate testing
there's no way to stand behind your product with confidence. That's why every product we design and sell at Edelbrock is tested and approved by Edelbrock engineers in a real world environment on state-of-the-art equipment. Our three Super Flow computerized engine dynos are capable of measuring 11 separate engine variables up to speeds of 12
000 rpm. For 2007
we added a new Super Flow SF902 engine dyno. It's fully automated and programmable to simulate various driving situations
and is equipped with WinDyn software for the very latest in testing equipment. For real-world tuning
there's our Super Flow model SF-840 eddy-current chassis dyno that can handle up to 1
000 hp at the wheels and speeds of 200 mph. When all testing is completed
the results evaluated
and the part has passed all performance criteria
then
and only then
is the product deemed ready for production. These precise testing procedures are applied to the entire Edelbrock line for performance that's guaranteed. Edelbrock test vehicles are driven by Edelbrock engineers and employees to get a "real world" feeling for the performance improvements. Our products are also tested and used by professional race car teams and drivers. Working with these talented individuals is just another extension of our research and development process so when we say "proven performance" we really mean it! Top racing teams in all forms of motorsports rely on Edelbrock to produce parts that they can count on to win races and championships. Further underscoring our commitment to the racing community
Edelbrock is the only aftermarket intake manifold manufacturer licensed by NASCAR.
