I'm getting ready to tear my LS7 down for a heads and cam change and was wondering if there is a hands down best roller lifter to get for a solid roller cam?

 

If you are going solid, do not use stock casting LS7 heads... The pressure most likely will push through the spring pocket.

 

I believe this car has stock casting heads and hasn't had any problems so far.

http://forums.corvetteforum.com/c6-z...oller-ls7.html

 

Where you have problems with the stock LS7 head is madhining the spring pockets for larger diameter springs normally associated with solid roller cams. There are springs you can run for a street solid roller that fit the stock spring pocket that will be safe.

...although "this guy hasnt had problems yet" isnt a very compelling argument when its only been done a month.

 

What rpm are you planning that would drive you to solid roller?

 

Morel 5452

 

Morel Solid Body Lifter

 

7200-7400rpm

 

Why bother then.

 

I have a bulletproof valvetrain set-up with Jesel rockers and 600# valve springs and it seems a shame to waste 400+ CFM heads on a hydraulic roller which will have marginal stability over ~6500 RPM.

 

Where in the lift rang does it flow 400cfm? I have lsx-ls7 heads and they flow 400 at 650 but drop off after that. In my opinion solid roller is only necesary for 8000+ rpms or huge lift in the 700+ range.

But asside from that I would suggest in order Jesel, crower, morel then all others. I have also done a little but of research before about solid roller and it would be wise to open up the lifter bores, install bronze bushings and install larger solid roller lifters. The wheel on ls style lifters is a little small for prolonged use on solid roller pressures.

 

we run crower HIPPO (high pressure pin oilers) lifters in mine (std diameter)

 

0.700" and past 0.750"

 

Isky EZ Roll. You don't need a solid roller to run those rpms with a Hyd Roller if you have Ti valves although there is some increased power potential with the solid. Morel are a good alternative and their HLT option could work very well for you with the right spring.

 

Not unless whoever is spec'ing and setting up your valvetrain is clueless.

If you already dropped the dough on adjustable rockers I'd say go for it though.

 

x2.......

 

If the engine isn't assembled I'd always go this route and install larger dia. lifter bushings if funds allow. Going to a .904 or larger dia. lifter is a huge benefit. I do know the Morel hyd. and solid lifters for sure do have larger wheels (.750" I believe) than stock though which is one of their main benefits. And Jesel will build whatever you want usually so that's not a problem there.

 

These are the ones I have been leaning toward due to the absence of roller bearings but wanted to know what else was out there.
Agree, however, the motor is together ;>(

Thanks for the feedback guys.

 

That too. I for got about that one. Wouldn't want to cut into a water pocket or weaken the spring pocket.

@ John B, I do not blame you building a bullet proof valvetrain, even shifting at low to mid 7000. I'm still building my engine and i'll only be shifting at 7800 to low 8000 with some big valves and my solid set up is over kill. But it's for my peace of mind...