Lifter - Pro Magnum - Hydraulic Flat Tappet - 0.842 in OD - Oldsmobile / Pontiac V8 - Set of 16

Engine Valve Lifter

Pro Magnum Hydraulic Flat Tappet Lifters. Specifically designed to perform at higher engine speeds. Proper position of internal piston at higher RPM prevents lifters from harmful "pumping up". Unique design yields significant power increase over standard hydraulic lifters. Adjustable valve train required. Pre-load .002"-.004" with engine warm. Applications: Oldsmobile V8 260-455, Pontiac V8 326-455. Specifications: .842" Diameter - 96g Weight - 2.01" Seat Height.

Additional Information

These Pro Magnum hydraulic lifters are designed to perform at high RPM without any harmful pumping up. These lifters for Oldsmobile 260-455 and Pontiac 326-455 yield significant power increase over standard hydraulic lifters.

Part Type

Engine Valve Lifter Kit

Product Overview

*Pro Magnum Hydraulic Lifters*
• Specifically designed to perform at higher engine speeds
• Proper position of internal piston at higher RPM prevents lifters from harmful “pumping up”
• Unique design yields significant power increase over standard hydraulic lifters
• Adjustable valve train required
• Pre-load .002"-.004" with engine warm

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Details

Product Downloads

#	Document Type	Download
1.	Catalog

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Lifters, Hydraulic Flat Tappet, Oldsmobile, Pontiac, Set of 16

These COMP Cams Pro Magnum hydraulic lifters are specifically designed to perform at higher engine speeds. When engines are equipped with a hydraulic camshaft, high rpm is limited by the improper positioning of the internal piston as the lifter inevitably "pumps up." This improper location results in broken valves, and, therefore, leads to lost power or sometimes even engine failure. These lifters offer a distinct advantage over standard high-performance hydraulic lifters, especially in race applications where a hydraulic lifter must be used.