Camming a 598' for endurance and torque
 

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

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

Happy reading

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.

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.

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

Rob, please post cam card/specs.

Thanks

hers the cam card

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

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

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 !!

Is RM Builder a cam manufacturer or engine builder? He has had great posts, just curious.

very knowledeable cam builder , he did say awhile back he might staet building engines ?

I would say RMBuilder/Bob is more of a cam consultant with some of his own proprietory cam lobe designs. He takes all your engine specs...i.e. cubic inches, uspercharge or naturally aspirated, carb size, comp raito, heads and head flow, type of exhaust system you're using, application the boat/engine is being used for....blah, blah, blah....and he will have a cam cut and custom fit for your application.

Bob is very intelligent, knowledgable and proffesional guy. My engine builder Dave at WESCO uses Bob's cam designs. Offshore engines are the only thing Dave builds and so far he probably has about 40 various marine offshore engines out there with Bob's cam designs.

So hydraulic or solid? Which way are you leaning?