Newer vs Older

'I have read the hydraulic lifter slants did not run as well and were problematic........no direct experience, so that may certainly not be the case.

not to knock the old guy, as usual RR is spouting something he does not have really good info on,
hence what he says is just noise,,RR,, if you really don't know, maybe you should say you will,,, find out, get some experience, then post. Why blow smoke?

From a person that does know, I have a hydraulic 83 D150, engine- motor- chassis- all 100% gone through,
ran before and runs now,,,and runs strong
set up to be a low RPM tow vehicle,,runs great, no complaints. Hydraulic lifters and all.
Nice thing about slant hydraulic lifters, top oilers with plenty of preload range capability.
no here-say,, done it and did it and it works,