I am almost done with the np205 rebuild. I am waiting on some used good Ebay shift rails. I am also waiting on a LOT of Buick 350 parts. A turned crankshaft with matching rods and mains included. A TA performance camshaft, Cam bearings, CAST rings, ebay vintage Johnson HT969 USA made lifters, and several other things. I had a very interesting conversation with Mike the owner of TA performance. The premiere Buick nuts candy store. We talked about killing camshafts and how not to. I was pleased to hear him say use Valvoline VR-1 oil. It is high zinc and he said get and use STP motor oil treatment with every oil change. It has even more ZDDP to help these older flat tappet cams survive. And he made an interesting point. Letting our hobby rigs sit for a month or several depletes the oil film on the cam lobes. He said people start their cars after sitting and let it idle to warm up. Big mistake he said as the cam is essentially lacking lube and those lobes have to wait for the oil to run down the valve train and bleed off from the lifters to bathe the lobes with the oil they need to cushion them and protect them against wear. He said start the engine and even though it is cold, run it to 1800 and splash the cam with oil from the crank. This wets the cam lobes and then let it warm up. Don't hold it there but give it a short run at 1800 to throw some oil off the spinning crank. He is also aware that todays oil is indeed NOT backwards compatible with these older engines, and the high zinc and phos needs that they have. Those compounds will kill catalytic converters. That is why they removed ZDDP from oil years ago. So by all means all you guys running older motors like the stock 230, well you should be running high ZDDP oil to help it live longer. At moderately low temperatures ZDDP forms a slippery glass like coating on metal parts that contact other metal parts. So if you are not running high zinc oil, at least use the STP additive. I will mention again I have been feeding my Civi jeeps Valvoline VR-1 for several years now. It does have higher levels of ZDDP. And I hopefully don't need to mention just how crappy Fram filters are. Mkay? LOL Even on TA's site it says stay away from FRAM. I chuckled when I read that. They recommend WIX and that is how I roll also. On a happy ending note, it appears my cylinder heads have the bigger valves. I hope they are not trashed too. Cheers..