My 64 valiant

Nice project car. Mine is a 64 DartGT 340 4 speed but Ive also owned 2 other /6 cars also and one was in a junk yard for 10 years hood open for at least 7 and ran great with tune up and oil change for a couple of years then parted it out for parts on my current 64 . By the way it kinda sounds like you need to adjust the lifters a little : )