BBC Roker Arms

[Alan Roehrich]

Originally Posted by Stockerchevy

What ratios are you guys getting out of the Nitro stamped rocker arms when you are checking them? At this time, we just measured a batch of them at 1.62 to 1.64. Am I the only 1 seeing this? They are on aluminum heads and we are down on lift as well. No I haven't cam doctored the lobes yet so I no we could have some alternative issues.

Jim

Jim,
The only thing we've used successfully in recent years are Clark Holroyd's rockers. They're consistently around 1.7:1, provided you have the correct pushrod length. You'll find that as little as 0.025" of pushrod length can move the maximum lift you get by a considerable amount.