Cam Problems

[nuch_ss396]

Ken,

This is becomming all too common. I think I'm going to use
EDM'd lifters in all my SHP cars from now on. Anyone got any
real data on EDM'd lifters vs. standard lifters?

Steve

[Xplantdad]

That so sucks...what's the address of the guy that originally rebuilt it...LOL

[Charley Lillard]

A new LS style engine already has roller lifters in it :-)

[Motion Camaro]

<font color="blue">I here that you cannot even use
High Volume/Pressure Oil pumps any more.
It pumps the (crappy) oil past everything too quickly.
This is making me crazy! </font>

[markjohnson]

I did a cam/lifter swap a little over a year ago in my LS-6 454. I used a very large Comp Cams solid lifter grind along with Comp's own flat tappet solid lifters with the EDM hole in the bottom of them. Quite expensive at $180 just for the lifters but worth it in the long run to avoid any problems. I'm not a fan of Rotella either because diesel oils are known to be next on the horizon for the reduced zinc content if it hasn't been reduced already! I used the Valvoline Racing Oil 20W50 along with GM's Cam/Lifter break in additive and so far have no problems to report. I probably should have broke the camshaft in properly by using the outer valve springs only, but my '55 Chevy ex-C/Gasser has the engine set back very far under the windshield and dash and this would require total engine removal. One more thing, I've never been a fan of the half hour/2500 RPM thing. Just seems to hard on everything. I like to run them at 2500 RPM for just a few minutes several times with COMPLETE cool-downs between each session. That's probably what you don't read in the magazines, but it has been very successful for me for a long time. Good luck.

[RamAirDave]

How common is it to have a cam failure after the initial 20-30 minute break-in period has been completed?

[VintageMusclecar]

What brand is(was) the cam and lifters?

How much spring pressure on the heads?

Eric

[kwhizz]

[ QUOTE ]
A new LS style engine already has roller lifters in it :-)

[/ QUOTE ]

Then I will be blamed for cloneing the Chevelle into a Corvette...................LOL

Ken