Pump Advisory

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Cad Company's higher Volume, higher pressure "Gold" and "Black" oil pumps are factory new with cast iron housings.

All performance oil pumps, including the race pumps, are modified here at Cad Company, in house. In order to improve the performance of the oil pumps, each pump body is ported and radiused.

It was brought to our attention that certain manufacturers say you cannot increase volume without lengthening the pump rotors. This is true if you perceive "volume" as the result of the mathematical formula for figuring out theoretic results. What we refer to as "higher volume", the manufacturers prefer to call "efficiency". And, in conversations with a tech reps, they have acknowledged that all the modification and hard work we put into our pumps will increase the efficiency of the pumps by a certain percentage. We do not now, and never have, claimed that raising pump pressure increases flow.

The primary advantage to our pumps was shown quite clearly during dyno testing - the nice thing about a modern, fully equipped dyno, is that you can graph everything. When checking the oil pressure graphs, a few things became obvious. Aside from slightly higher idle oil pressure, our Gold series pump produced a nice clean pressure curve as RPM increased. The standard replacement pump did not - pressure fluctuated wildly, dropping as low as 8 PSI. Basically, the volume of oil being pushed into the oil passages was not consistently higher than the volume of oil exiting those passages, therefore causing pressure to drop, and causing oil starvation at the nether regions of the engine. Our Gold series pump didn't exhibit that problem.

When it comes to fuel pumps, there is no such thing as too much capacity. During testing, we found that on even medium level street engines, well under 400 HP, fuel pressure supplied by the standard ‘high flow’ replacement pump dropped off to the point of having to stop the pull less than halfway through as the carb’s fuel bowl was emptied, resulting in detonation. Note that these pulls were only to be 8 seconds at WOT, and most hot rods see more extended periods of WOT than that… The other consideration is too much pressure - Cad Company's High Perf fuel pumps tend to generate enough pressure to unseat the needle valve during pressure spikes, such as sudden deceleration, causing a flooded engine. Running a High Perf pump on a street car or truck without a pressure regulator is strongly discouraged. Note that these pressure spikes could cause a ruptured fuel pump diaphragm in rare cases without a return line.

The Flow Kooler™ water pump fits the same as the OE replacement pumps, but pushes approximately 30% more coolant at idle. If you have (or wish to prevent ahead of time) an overheating problem that occurs while sitting in traffic or other low RPM situations, this pump is the trick.