Engine Kits

Sealed Power HT951 Buick/Olds/Pontiac Valve Lifter
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Sealed Power HT951 Buick/Olds/Pontiac Valve Lifter



Part #: HT951
List Price: $6.36
Our Price: $2.99
You Save: $3.37



Buick Oldsmobile Pontiac V8 HT951 Valve lifter are 100% Rockwell tested. .842 or 27/32 dia Buick 1964-84 Oldsmobile 350-455 1965-79 Pontiac 326-455,
Interchange

TO BE USED AS A GUIDE ONLY - Application Must Be Verified

AE CLEVITE H951
DANA/PERFECT CIRCLE 2131674
DYNAGEAR/MANLEY ML951H
ELGIN HL1951
ENGINETECH L951
FEDERAL MOGUL/SEALED POWER HT951
GM 17085567
GM 5231355
GM 5231360
GM 5231615
GM 5232265
GM 5232320
GM 5232375
GM 5232385
GM 5232570
GM 5232575
GM 5232675
GM 5232750
GM 5232755
GM 5232780
GM 5232895
GM 5232900
MELLING JB951
MORESA H304
PIONEER VT951
STANADYNE 12304
TRW VL49
WOLVERINE HL1951

Sealed Power Hydraulic Valve Lifters

The basic function of a hydraulic lifter is to ride up and down on the cam lobe and open the valves when the cam rotates. Sounds simple doesn't it? Wrong !

The hydraulic lifter is one of the most complex components of an internal engine, with a multitude of moving parts with the main purpose of maintaining zero lash. When the camshaft is at the beginning of lift, all the lifter internal components are in the zero-lash position. The check ball is seated and has sealed the high pressure chamber. Starting valve lift cycle (where the camshaft pushes the lifter up), the valve spring applies force on the lifter, which slightly depresses the internal components. Then, a controlled leak-down occurs: An internal spring pushes the internal components firmly against the push rod to remove any lash in the system, after which the process starts all over again.

A hi strength, break in additive is now required for installation of new flat tappet lifters.  Recent changes in engine oils have eliminated zinc and phosphorus from typical oils and this is absolutely necessary for new cam/lifter installations. We recommend a Competition Cams # 159 for this application.