Rocker arms

[Muddytazz]

What are the differences/advantages of using steel or aluminum in the fuller rollers? I'm searching to buy some new rocker arms and need to know what/which/why.

 

[gauder]

If you're asking about the diff between the 4340 roller rockers and the aluminum ones, generally the 4340 have more material around the rocker trunion giving them greater strength for really high horsepower motors. We ran the aluminum style on a 637hp 396 with no probs though.

 

[jeeptuff]

I like the steel full rollers, I have had issues in the past with the aluminium ones.

 

[neverendingproject]

Simply put steel is for strength and aluminum is for weight. In our rigs aluminum is all you need. It gives decresed valvetrain weight, and less friction, Steel ones are the same except they wiegh more and stronger. Im gonna be running aluminum 1.6 and 1.5 ratio on my 383 when I get it together

 

[4X4HIGH]

As i told you last night the comp cams pro magnum roller rockers are excellent because they are steel but don't weigh any more than the aluminum ones but are stronger than the aluminum.

I also have used aluminum ones in the past and had the rocker wear out in the truinion area of the rocker.

 

[dyeager535]

If you believe what comp says, their steel pro magnum line is lighter than aluminum rockers.

Only issues I've heard with aluminum is durability, but I can't imagine it's a huge problem, they have been around for a long time and tons of people run them. A few complaints don't indicate a flawed design in general.

 

[Muddytazz]

I went with scott's advice when we were talking last night about them and got the comp cams pro magnum roller rockers

 

[4X4HIGH]

I went with scott's advice when we were talking last night about them and got the comp cams pro magnum roller rockers

Thataboy.