Type 1 oil pump modifications for full flow, be sure to check this! Options

[crash914]

Here are a couple of pictures showing what the differences are between a stock type 1 oil pump and a modified for type 4 use one.

This pump is also plugged for full flow. don't do this if you don't have a full flow take off cover. You will destroy your engine..

about 1/8 inch needs to be removed from the snout of the pump. Hopefully you can see that the pump won't seat as it hits the cam.

[McMark]

Full flow is, at it's most basic, simply blocking any route bypassing the oil filter. So all the oil MUST go through the filter. The stock filter console has a spring loaded ball valve. Going 'full flow' would be a simple as tack welding the ball to the seat. But most often the setup is done by blocking the oil pump outlet, installing a pump cover with an outlet built in, removing the stock filter console and installing a block off plate instead, then removing one of the gallery plugs and using that to reintroduce the oil after it goes through whatever external filter/cooler combo you run.

I'm not really sold on the supposed benefits. It adds a lot of junctions that are potential leak points, which I don't like. The only logic that makes sense to me is that with a higher oil pressure, you may tend to lift the ball valve off its seat more frequently than a stock motor. But I think there are ways to address this issue without having to do the oil pump/cover/fittings/lines/external filter/etc setup.

Of course, if you're running an external oil cooler, it makes much more sense since the oil has to exit the case at some point to get to the cooler.