Hello, this is my first post on this forum. I currently have a 1966 fastback with a 1989 302 in it. A little back story... 10 years ago we replaced the motor that was in it when I purchased it, drove it around with no issues. Then I got a little wild and decided to change out the cam. We also changed the intake, carb, and got rid of points. Right after all this I was no longer getting any oil pressure. Changed the oil pump, pickup, sending unit and gauges. Still no luck. My car has been sitting long enough and I'm ready to start tackling the issues now but the main issue is this motor. I'm looking for any thoughts on where I might have gone wrong. Im not sure if this is the proper forum for my problem so if it is please direct me elsewhere. Thanks!

Brian

 

hook up a mechanical gauge if you haven't and check again or go to plan b.

pull the distibutor

spin it up counter clockwise with a 1/2" drill.

if you have no oil pressure drain the oil.

if you see ultra fine metal flake in it, it is bearings. they will reflect in the sunlight.

drag a magnet through it to see if there is steel.

if there is much of either your engine is toast.

if noit try another oil pump from mellings.

disassemble and clean it first.

 

If you were getting oil pressure, and then immediately after all the work, stopped getting oil pressure it's very doubtful you have worn out bearings.
Even with worn bearings you will still have some oil pressure.

Capt. Obvious says, "Did you forget to install the oil pump drive shaft?"
(one of the best mechanics I know has done this )

As suggested above, put a mechanical gauge on it (temporarily under the hood) to know for sure what's going on.
And spinning the oil pump from the top side with a drill is a good suggestion also.

Something else to check:
Did you put the engine-to-body ground cable back on?
Are the other gauges working properly?


Let us know what you find out.







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how about checking the oil pressure sending switch and wiring? see if the switch is plugged with crud preventing it from giving a reading to your gauge. yo usaid you changed the sending unit. did you get the right one? if i remember correctly, years ago when i put in aftermarket gauge set, the water and oil sending switches were different than stock.

 

Thanks guys. I will be trying your suggestions out. When we installed the oil pump we did the drill deal and had no issues. The sending unit caused some headache but we did all the research we could and tried multiple units and gauges all with the same result. Would the wrong cam cause these issues? It's been 10 years since I dove into this motor so I don't remember what cam we put in. I'm in the process now of finding the original specs for what this motor should have so we can have a starting point. Again thank you for the help and the silly questions. I'm just trying to do things right this time and appreciate any help I can get.

 

this comment makes no sense. how do you know the oil pump was working?



no.

 

Did you get a sending unit for a '66 or a '89?








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