Evolution Retro Fit Tie Bar Hydraulic Roller Lifters GM LS1, LS2 LS3, 5.7L, 6.0L, 6.2L, L98,

Comp Cams 89571-16, Cartridge Evolution Hydraulic Roller Lifters, Tie Bar, Retro-Fit for the LS1 LS2 LS3 Engines. 

Comp Cams new Evoluiton Hydraulic Roller Lifters with Hydraulic Cartridge Technology is a revolutionary patented roller tappet lifter. A combination of a self-contained hydraulic cartridge within a thick wall lifter body and accompanying reduced oil volume that is less effected by oil aeration delivers the most consistent bleed rates between each lifter on the market.

The smaller volume within the Comp Cams hydraulic cartridge creates one of the most responsive and quietest LS lifters on the market today. Startup noise is greatly reduced and a precision-controlled bleed down rate ensures excellent performance at high RPM. The Comp Cams cartridge design also allows for an incredibly stiff lifter body, greatly reducing body distortion and further ensuring consistent hydraulic performance. Comp Cams has patented this HCT tappet lifter and is a completely new design that was developed specifically by COMP Cams to meet the demanding performance and durability required for modern street and performance street engines. The HCT and proprietary manufacturing processes of these lifters ensure precision and longevity that exceed any lifter on the market. Other features include increased duration and lift to the camshaft and two oiling features. Another industry first is the fact that the hydraulic element of this patented lifter is serviceable, allowing anyone to rebuild lifters in his or her own garage.

Lifter Diameter:    0.842 in

Lifter Style:    Hydraulic Roller

Lifter Seat Height:    2.66 in

Retainment:   Linkbar// Tie Bar

Lifter Travel:    .150 in

Recommended Preload:   0.100 in

Pushrod Seat Offset:   N/A

Oil Band Top:    1.42 in

Oil Band Bottom:    0.93 in

Lifter Overall Height:    3.23 in

Linkbar Bottom:   2.59 in

Lifter Wheel Diameter:    0.700 in

Roller Type:    Needle Bearing

Lifter Finish:    As Ground

Lifter Seat Cup Diameter:   0.3125 in