Low Oil Pressure on Hard Deceleration, 2.056L with Dual Carbs Options

[Spoke]

I bought this allegedly running-when-it-was-pulled 2L engine last year to upgrade to 2.056L just to find out it already had 96mm P&C.

Internals turns smoothly so I thought I'd do the flame test and clean the engine and put it back together. The engine runs strong and smooth.

As I started driving it harder I noticed on fast deceleration the oil light would come on.

If I let the engine speed come down naturally from about 2k, the oil light doesn't come on.

Last night coming off the highway running about 3.2k, I immediately shifted into neutral to let the engine slow on its own, the oil light came on for a few seconds as the engine was now idling.

I don't have an oil pressure gauge on it to see where the oil pressure is during operation.

Any ideas of what to look at?

[brant]

I'd replace the sending unit too.
put on a dual pole and a real oil pressure gauge
you need to know that info if you want to potentially save a motor

likely you don't have a problem and its a wiring issue
but you need an actual gauge on it, to begin the diagnosis