[i82much]

Originally Posted by Jay S

Back when Morel was developing their HR lifter back in the early 2000s they did a spintron test to simulate 100K miles with a .650” lift cam. Now it seems like people are afraid to drive the car across the yard with them. Makes you wonder what happened between now and then.

i think people get too freaked out about a little noise. these cars weren't that dang quiet when new, they are as heck ain't gonna be quiet with headers, aluminum intake and heads, and .600 lift cams!!

[Jay S]

Originally Posted by i82much

i think people get too freaked out about a little noise. these cars weren't that dang quiet when new, they are as heck ain't gonna be quiet with headers, aluminum intake and heads, and .600 lift cams!!

A couple years ago took my TA out on a cold winter night, that was really damp and sound traveled from everywhere. Man it was like driving a horror movie car that was possessed!

[PAUL K]

Hy-lift "S" lifter is their top shelf lifter with close tolerance bleed down rates. It's their only performance quiet lifter..... They won't make them for our Pontiacs.

R lifter is considered a quick bleed lifter with consistent bleed rates. Noise is considered normal when used with performance valve springs and quick ramps.

951 is only recommended for use with stock/factory valve spring pressures due to uncontrolled bleed rates that can cause individual noisy lifters when use with fast ramp cams and stiff springs.

But supposedly the got their $1500 HR lifters right.

[PAUL K]

Originally Posted by i82much

i think people get too freaked out about a little noise. these cars weren't that dang quiet when new, they are as heck ain't gonna be quiet with headers, aluminum intake and heads, and .600 lift cams!!

I'm not sure if I'm freaked out. I'd just like a set of $300 lifters work as well as my old $59 lifters. Not a big fan of flat cams and collapsed pushrod cups. We should have the technology to (re) build them and make them better than they were before. Better, stronger, faster and quieter

[Formulajones]

As far as oil goes, 20-50 has worked perfectly fine for me for decades with flat tappets and roller lifters, regardless of who's name is on it or whether it has a wheel on the bottom or not. But I use a synthetic that has a way better pour rating than most other 20-50's on the market and as good as many 10-30's so the blanket statement these cam manufactures make of using certain viscosity oils for certain lifters really should be explained a little better to the public because there are too many variables with oils.

[Formulajones]

Originally Posted by PAUL K

I'm not sure if I'm freaked out. I'd just like a set of $300 lifters work as well as my old $59 lifters. Not a big fan of flat cams and collapsed pushrod cups. We should have the technology to (re) build them and make them better than they were before. Better, stronger, faster and quieter

Boy so would I. It's disappointing the same lifters I bought 10 years ago, or even just 5 years ago for $500, are now over a thousand. Nothing has really changed with the lifter either.