Is my new build doomed because I bought a flat tappet?

Use a high-zinc content oil like 20W-50 Valvoline VR-1 (by far, the best) or Mobile 1 Racing oil.

In 1994 the industry removed zinc from motor oils because it had a negative effect on catalytic converters. While this benefited newer engines, it dealt a death blow to older engines with flat tappet camshafts and, as a result, worn out camshafts became the norm. The lubricating properties of zinc and phosphorous are essential for maintaining the longevity of older internal combustion engines.

Zinc can damage catalytic converters. For that reason, the EPA has mandated that zinc levels be reduced in today's oils. Most, if not all, modern automotive and truck engines are using overhead camshafts or roller lifters. These motors don't require a lot of zinc because the loads on the cams and lifters aren't as great as those in flat lifter motors
Avoid the problem by choosing the right oil-- that has a zinc content of at least .11%. If you're running zero zinc content oil in an old engine

Bottom Line:
It the vehicle doesn’t have a catalytic converter, use a high zinc-content motor oil.

2014 engine oil zinc content chart sorted by viscosity, zinc content, brand name


Just a quick update for this one - Mobil 1 15w50 has ~1300 ppm of zinc and is good for flat tappet cams. I wouldn't use 15w50 in a new build though unless your clearances are on the loose side.

https://www.mobil.com/lubricants/-/...-1/pdf/emsga-mobil1productguide-v2-9-1-22.pdf
 
Having a hard time getting the camera to see these gouges.

here are some. the rest are all similar

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Those might live but I would have them resurfaced instead of taking the chance. If a lifter eats her pigs, it takes the cam lobe and sends shrapnel throughout the engine. Is it worth it knowing they aren't perfect to start with?
Its just the waiting to get the parts then to inspect them then send them back wait rinse and repeat.
Back in the day I dont think I even looked, just threw them in and no problems.
If someone said, "thats nothing, they will wear a bit and polish themselves out that would be ok" but with all the problems I seen I am really scrutinizing everything.
I called comp cams and sent some pictures but they had no definitive answer for me. they said if I can catch a nail then be worried or if I'm unsure try to get them replaced and he mentioned the dlc lifters but you'd think if they needed dlc they would all have it.
very distressing.
I'm sorry if I'm wearing out anyone's patience.
 
I contacted the place I bought the cam and lifter kit with the pictures and they said not to use them and I have another set in the mail from them.
Hopefully they look better.
I also called comp cams and sent the pictures and they just remained neutral and said I should decide myself. pretty wishy washy support there
 
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