Composite lifters, any good?

[Ornamental]

Do anyone have experience with using composite lifters, are they good, or are they made of compo$hite?

The one I have in mind are these:
http://4secondsflat.com/Composite%20lifters.htm

"These lifters require NO treatment or break-in on stock cast iron cams, this has been
their success story for the last 13 years. You install them on your stock
untreated cam, using your race ready springs (no special motor oil required)
No Break-in and go to the races. There is No Cam Wear and you can change
cams as often as you wish using the same lifters. Although these lifters work
well on steel camshafts, save your money, you don't need a steel billet cam."

-You can now run enough spring pressure to control the valve 200-250 on the seat is normal,
-400-450 over the nose works great!
-No break-in required.
-Swap cams anytime.
-Lifters will go back in any boss.
-No More Valve Float!
-Helps Eliminate Valve Train Harmonics.
-Longer Spring Life.


Prices:
-Solids at $685.00 a set
-Hydraulics $720.00 a set


Yeah, it's a lot of money for some lifters, but if they perform as advertised, I'm all for getting a set.
It's not like the oil, oilfilters, and additives I also need for a cam change are free anyway.
I just paid about $300 for the above, in preparation for one cam change.
If I can avoid a lot of spending over time, i.e. new stuff for new cam changes, by one big splash now, I'll do it.
No break in does also sound real good to me, that's one thing that's been worrying me too.

[gkring]

shubecks were all the rage a few years ago, but has since died off.
personally I would go with a roller camshaft, which also last a long time and can be used over and over with no breakin procedure. The only reason to choose these composite lifters over a roller is that they are lighter.

[vinb]

shubecks were all the rage a few years ago, but has since died off.
personally I would go with a roller camshaft, which also last a long time and can be used over and over with no breakin procedure. The only reason to choose these composite lifters over a roller is that they are lighter.

If your not building a NHRA Stocker, put your money in a roller set-up...

[Ornamental]

I have this cam waiting patiently for me to install it:
http://store.summitracing.com/partdetail.asp?part=DCC%2D4452992&autoview=sku

Does it make sense to replace the hydraulic lifters with hydraulic roller lifters in this set up?
Should I then replace the pushrods too?

[gkring]

I have this cam waiting patiently for me to install it:
http://store.summitracing.com/partdetail.asp?part=DCC%2D4452992&autoview=sku

Does it make sense to replace the hydraulic lifters with hydraulic roller lifters in this set up?
Should I then replace the pushrods too?

Hydraulic roller lifters need to go on a roller camshaft. A regular flat tappet cam is ground with taper to make the lifters spin. A roller lifter rides on a wheel, so its cam has no taper in the lobes. Also a roller cam will be ground more aggressively to take advantage of the roller lifters. You would have to replace the pushrods as a roller lifter is taller than a regular lifter. I would sell the cam you have and buy a roller setup ready to go, or just use it as is with conventional lifters. Breaking in a cam isn't that big of a deal, especially on a mild cam like that.