Out of stock
SKU: COM42-229-4
UPC: 036584500353
MPN: 42-229-4
The COMP CAMS Olds V8 268H Hydraulic Flat Tappet Camshaft (part number 42-229-4) is a high-energy cam profile engineered for Oldsmobile V8 engines spanning 260 to 455 cubic inches. This hydraulic flat tappet design delivers 0.456 inches of lift on both intake and exhaust lobes with a 268-degree duration rating and 110-degree lobe separation angle, optimized to develop peak power between 1,500 and 5,500 RPM. Built for builders and engine enthusiasts seeking reliable, predictable valvetrain performance without the complexity of solid lifters, this cam combines proven hydraulic compensation with street-manners idle and broad torque delivery.
The 268-degree duration and symmetrical 0.456/0.456 lift profile characterize a mid-range performance cam suitable for daily-driven muscle cars and weekend cruisers. The 110 LSA (lobe separation angle) centers the power band in the mid-RPM range, minimizing cold-start valve float while maintaining street driveability. Hydraulic lifters automatically adjust for thermal expansion and component wear, eliminating the frequent valve lash checks required by solid designs. This specification makes the cam accessible to builders without dedicated dyno tuning or extensive tuning experience, while still offering measurable output increases over stock profiles.
This camshaft is intended for Oldsmobile V8 restoration, rebuild, and performance upgrade projects. Whether installing in a freshly bored 455, a carbureted 403, or a rebuilt 350 block, the 268H provides an economical step up in efficiency without requiring valve spring upgrades, pushrod changes, or ignition system modifications. The hydraulic design tolerates modest variations in lifter preload and valvetrain geometry, a practical advantage in field installations where OEM specifications may be unavailable or components show wear. Engine builders and restoration shops routinely specify COMP CAMS hydraulic profiles for customers seeking reliable, repeatable results on a budget.
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