Suitable as an upgrade for LS1 LS2 LS3 L76 L77 L98 powered Holden Commodore & HSV V8 VT VX VY VZ VE VF
Set of 16 GM/Delphi LS7 style replacement stock lifters for all VT-VF LS1 LS2 LS3 L76 L77 L98. These lifters are the replacement part for anyone looking to upgrade their LS engine with a new set of GM lifters. They are also a great option for those wanting to remove the factory AFM/DOD lifters from their L76 or L77 engine (as part of a AFM/DOD removal). These lifters have several upgrades that make them a perfect addition to your LS engine build.
Benefits:
- Anti-varnish design minimizes sensitivity to accumulation of dirt, gum and varnish
- Chrome alloy ball check valve provides more precise valve opening and closing events
- Hardened steel body and plunger minimize wear for life-of-engine service
- Low-friction roller bearing helps maximize fuel economy
- Roller surface is optimized to minimize the cost of cam lobe processing without loss of performance
- Oil metering provides lubrication to push rod interfaces and other valve train components
- Optimized dynamic performance design enables better control of the valve event at all engine speeds
- Optimized to minimize occurrence of cold start noise with adequate oil supply
Specifications:
- Set of 16 LS7 type lifters for LS-Series engines
- Maximum engine operating speed 6,000+ rpm (typical)
- Roller follower material High alloy bearing steel
- Roller follower crown radius 585 mm
- Roller follower diameter 17.775 mm
- Recommended maximum Hertzian contact stress 1,900 MPa with steel cam
- 1,650 MPa with austempered ductile iron cam
- 1,550 MPa with nodular iron cam
- Oil supply pressure 100-500 kPa (typical)
- Body outside diameter 21.4 mm (standard)
Fitment notes:
- Suitable as an upgrade for LS1 LS2 LS3 L76 L77 L98 powered Holden Commodore & HSV V8 VT VX VY VZ VE VF
- L76 & L77 only suitable as a replacement when removing AFM/DOD system.
Genuine LS7 Delphi Lifters, made in the USA with Gold Circlip. These are a genuine lifter, however you must soak in oil 24 hours before use. You must check preload, lifter bore etc. before install. These do not come with any warranty due to too many variables that can affect lifter install.
https://www.enginebuildermag.com/2011/06/getting-to-the-bottom-of-hydraulic-lifter-preload/ more information here.
