[boostednut]

Originally Posted by oldman

have tendency to agree, sooner or later you going to need a steel core lifter.
Money no object:
http://www.straubtechnologies.com/ls...r-lifter-5564/
hydro drop ins:
http://www.straubtechnologies.com/ch...-lifters-4793/

The thing about a solid lifter is that you need to check clearances correct? So why not run something more affordable like an oem style hydraulic, not have to worry about clearances and just replace as a part of a service routine. I mean either way you have to take most of it apart. It's cheaper in the short term, and I don't imagine a lifter install is that much extra work (could be wrong haven't done one).

Or does a solid lifter really last that much longer? I have to imagine it grows slightly loose over time regardless what you run?

I'm just looking for your first hand experience. Also for me I'm not trying to run crazy revs, but getting a few extra hundred rpm is always nice.

[Franko07]

Originally Posted by boostednut

The thing about a solid lifter is that you need to check clearances correct? So why not run something more affordable like an oem style hydraulic, not have to worry about clearances and just replace as a part of a service routine. I mean either way you have to take most of it apart. It's cheaper in the short term, and I don't imagine a lifter install is that much extra work (could be wrong haven't done one).

Or does a solid lifter really last that much longer? I have to imagine it grows slightly loose over time regardless what you run?

I'm just looking for your first hand experience. Also for me I'm not trying to run crazy revs, but getting a few extra hundred rpm is always nice.

this is likely something you wouldn't do if its under 7500-8000 rpm. I would look into it if i wanted to go much higher.

if you go extreme RPM range then you would want solid in most cases to keep everything consistent and from collapsing. Maintenance inst as bad as most people want to think on solid lifters, once you check them the first couple of times they only need to be checked every few thousand miles. and its just a matter of popping the valve cover and verifying all is good.

me personally my car saw 2200miles last year so id consider this as a real option if i was planning to get crazy with the RPM

this is a big deal in older high rpm applications, like SBF from the 60's like a 289 in a road racing application that spins 9k. i have not personally seen this in more of the modern stuff.

[oldman]

Originally Posted by boostednut

The thing about a solid lifter is that you need to check clearances correct? So why not run something more affordable like an oem style hydraulic, not have to worry about clearances and just replace as a part of a service routine. I mean either way you have to take most of it apart. It's cheaper in the short term, and I don't imagine a lifter install is that much extra work (could be wrong haven't done one).

Or does a solid lifter really last that much longer? I have to imagine it grows slightly loose over time regardless what you run?

I'm just looking for your first hand experience. Also for me I'm not trying to run crazy revs, but getting a few extra hundred rpm is always nice.

I actually like solid lifters and they do need adjustment every so often, the problem with sold lifters are they cause false knock.. which could really be an intractable gremlin. I also listed drop in hydraulic. I admit I'm cautious on OHV and too much lift and RPM. This is my dailydriver, my race cars, that is another story, they are ALL solids.

[slowlypullin]

Originally Posted by PRAY

I am looking for dyno graphs of H/C cars pulling to 7K and making peak power around 6,700 or above. I am trying to run down an issue. But most of the graphs I have seen have peak power around 6,300-6,500 and then falling off or hitting a dip and going flat. I would really like to see one of these 7,500rpm screamers I hear people talking about.

Do you think it may have something to do with the head exhaust port design? It's not inline with the exhaust valve.

[BravoMyles]

Mine makes peak at about 6700-6800, don't have a picture of my graph though.

Little blower cam with a small amount of head work.

[PRAY]

Originally Posted by slowlypullin

Do you think it may have something to do with the head exhaust port design? It's not inline with the exhaust valve.

Not after the heads are ported. They flow right in line with my LS3 exhausts. Around 275cfm at .600 lift.