Nitrided Cam

jamie2370 · 02-23-2022, 09:05 PM

Long story....Fresh stocker 305 sbc done by a reputable builder. I am on my 3rd set of exhaust valves due to wrong valve springs(only 130lbs seat, not PAC 1409x 175lbs) Anyway, pulled engine to verify all clearances(PTV, PTH) and cam settings(Done by an experienced person). All came back where they needed to be. Well, had to pull the oil pan the reinstall timing cover...metal goop in pan, pulled lifters to check them..all good, tried to pull cam. It would not turn and had to pry it out thru the lifter bores. Cam bearings are horrible. Tried another cam I have and it installed and turned as normal. Cam I took out is a Bullet Nitrided cam(it is ALL black). I think cam is bent. Is this an issue with Nitriding or is there a different bearing for those cams?? I honestly have never had a bent sbc cam in 30yrs of racing

02-23-2022, 09:05 PM	#1
jamie2370 Member Join Date: Dec 2014 Location: Perry, GA Posts: 331 Likes: 11 Liked 239 Times in 90 Posts	Nitrided Cam Long story....Fresh stocker 305 sbc done by a reputable builder. I am on my 3rd set of exhaust valves due to wrong valve springs(only 130lbs seat, not PAC 1409x 175lbs) Anyway, pulled engine to verify all clearances(PTV, PTH) and cam settings(Done by an experienced person). All came back where they needed to be. Well, had to pull the oil pan the reinstall timing cover...metal goop in pan, pulled lifters to check them..all good, tried to pull cam. It would not turn and had to pry it out thru the lifter bores. Cam bearings are horrible. Tried another cam I have and it installed and turned as normal. Cam I took out is a Bullet Nitrided cam(it is ALL black). I think cam is bent. Is this an issue with Nitriding or is there a different bearing for those cams?? I honestly have never had a bent sbc cam in 30yrs of racing