Correct Oil Filter for SB

bwhitejr said

The oil we used is Castrol GTX 20-50W.

I need to look up all the places where there could be internal leaks. How can I tell if I really have a HV oil pump once I get the pan off?

I noticed the 90 deg oil filter adapter has a plug in the end on the suction side. Could I put a gauge on that and be able to tell anything?

I really hate to do this ,but it sounds like we might need to pull the motor out of the car over the Christmas Holidays. (Hope it is warm enough). If it is not obvious like a missing plug I am not sure what to look for.

bwhitejr

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Wow that really is low pressure for having a hv pump and using 20w50.

Like Bob said the HV pump is thicker than a stock pump and all I've seen have a tag on one of the body screws that says HV.

As far as internal leaks the only ones there can be are the ones allready mentioned. Bob noted the plugs behind the cam thrust plate could do it. The 360 in my Cuda was rebuilt when I got it and it had low oil pressure so I pulled it out and checked it over and found those plugs missing and thought great I found the problem. I put it back together and it didn't hardly gain even 5 psi. Aparently the thrust plate seals it up pretty good.

Yes that is a port to check oil pressure at but that's not a suction port. The only place you have suction is at the input of the oil pump. Everything else has pressure. That's just the pressure input to the filter. Theoretically you should read the same psi as it does up top but there might be a small difference.

I hate to say it but it does sound like you need to pull it out and go through it.