Oil + additive viscosity

Hi guys.
I have installed the fitting without the check valve in it. Also I drilled it to about 370 thou from anout 300 thou. I took it for a run to see if there was any difference. There was marginal difference in overall pressure difference. I gave it a wot run from 30mph to about 100 mph and the pressure sustained at 50psi. This may have done some difference. Yes it did drop but marginally. Still early to tell. The temp was much hotter that day so that gave it a harder run. I dont think there is a conceren. Its mainly driven mildly. Yes this engine is different to my previous 318 block but that was a stocker while this 360 has more work done to it with Edlebrock alloy heads, 10.7:1 and a stage 3 cam. 3000 stall to boot. So I guess its not a direct comparison with my previous block since this will be under more stress. Next step is I am going to change the mechanical gauge to see any difference also. One pic is at idle and the other at wot.
Regards.
Billy D...

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