Wanting to know on a engine build if its worth the nine hundred dollars to go with the hydraulic rollers over the standard hydraulic. Also the xtra five hundred for roller rockers. This will be a street engine probably along the lines of this motor here http://musclemotorsracing.com/engines/street-killer-krate.html
I will be using the A&A max wedge crossram with the 440 ports.
Thanks

On the rockers, stock stamped steel is good to about .5" lift. Beyond that the pushrod likes to push a hole in the rocker. It depends on your cam choice. Since most performance cams you are likley to pick are over .5" lift, I'd say the better rockers are pretty important. Plus a performance cam will really benefit by getting lash or pre-load dialed in with adjustable rockers. I like Comp Pro Magnum or the ductile iron rockers best as they are durable, at least up to about .6" lift.

On the cam for a moderate build the roller is not worth it, my opinion.

At the range of $$$$ that you're talking about I'd say go for the rollers. You can get a better street cam (shorter duration higher lift) with the roller plus if you ever do want to change out cams you don't have to buy new lifters and worry about cam break-in.

For that upgrade cost I could gold-plate my current engine project!

R.

I am very happy with the Hydraulic Rollers from Bullet Cams, so long as your head flow is strong and your port profile doesn't really require the High rate of lift cam, it's a nice low mainenance alternative to a solid roller.

The downside of a solid roller on the street is the necessary strong spring pressures can take a toll on the seats and guides in terms of longevity, and if a lifter fails it's usually messy.

My 517 Bullet has revved easily to 6800 and easily on par with a very agressive solid flat tappet and a mild endurance type solid roller, but It's running heads that flow 362 at only .600 lift so it would probably still make decent power if I shoved a broomstick in the cam tunnel.

But a HR costs about the same as an SR so (except for the spring rates and pressures) the argument can be made to go with a milder "endurance" type soild roller for the same money. Depends a lot on the application, but if you look at some of the times these LS bowtie motors are turning with juicers you can very easily see that HR's are benefitting from a lot of R&D developments over the past several years.

I run an endurance type (out of a mid-90's IROC Dodge race car). 266/269 @ .050 .585/.570 lift Cam Motion solid roller in my 414, it idles better than a Comp 305 Magnum hydraulic and has a heck of a lot more range and power. Real easy on the valvetrain too.