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Chevrolet V-8 By-Pass Oil Filter

Its 1955 and Chevrolet trucks and cars offer their first small block V-8, a light weight with 265 cubic inches. (Not counting their short lived V-8 in 1917-18).

This series of V-8’s, along with the high pressure inline 235 six cylinder (1954-62), are probably the most successful engines in the General Motor’s history up to that time. With proper maintenance they were long lasting and repairs were possible even by medium skilled “shade tree” mechanics.

As with their 235 six cylinders through 1962, the first V-8 did not come with an oil filter. It was a Chevrolet dealer accessory. Adding an oil filter was usually done by the dealer from a GM kit. There was no place on the side of the engine block to receive a filter! To create this V-8 filter assembly the Chevrolet Division used a canister from a 235 six cylinder and welded a right angle lip on the bottom. Here, this unit was secured under the thermostat housing on top of the intake manifold. Quite unique!

The big change was in 1956.

It was this second year of the 265 V-8 that GM added a position in the engine block casting for the oil filter on the lower side. This was not a spin-on filter but was in a canister held to the block by a large center bolt. Now for the first time the new truck or car had a factory installed “full flow” oil filter like vehicles today. Motor oil goes through the filter before it reaches the engine!

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Accessory Oil Filter Installed

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Oil fill pipe on side of canister

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Close up. Lip under water outlet

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265 V-8 without option oil filter

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