IRONMAN

Would a hyd roller or a solid roller get me closer to 500 to 600 hours of service life if adjusted at normal intervals? I plan on running at a max of 5500 rpms and making big torque, I am not trying to get 800hp out of this, maybe 650 to 700hp

Back4More

http://www.iskycams.com/redzone.php
http://www.iskycams.com/springs.php

Happy reading

Griff

You will still need to probably replace the valve springs every 150hrs due to the high lift it will need to work well with 598ci.

KAAMA

Not sure how many hours you'd get out those engine(s), but 650-700hp out of a NA 598cid shouldn't be too difficult. Lots of factors determine the endurance/longevity of and engine, but one thing that will help is a cam with a profile that is easy on the valve train and install a shaftmount roller rocker arm system vs a stud mount---and use really high quality valve springs. The valve train is a Big Block's weakest link. You can install a shelf cam if you want or for only about $70 or so more, RMBuilder/Bob Madara of Marine Kinetics will get you a cam that is tailor fitted to your engine's specs/application. Have Fun.

ROB FREEMAN

ive got rm buider hy roller he cut for my 598 id be willing to sell dyno time only

800XCR

Rob, please post cam card/specs.

Thanks

ROB FREEMAN

hers the cam card

Back4More

Thats a great cam grind with some big 350+ heads.

IRONMAN

Why would you want to sell? It looks like a nice grind for a 598. Did you switch to solid?

ROB FREEMAN

exactly i run worked 345 drt pro ones , im going to have bob cut me a solid roller and try the new red zone lifters from isky always in search of mo power !!