Rocker arms


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By Cactus - 18 Years Ago
Has anyone experimented with using high ratio rocker arms on the intake side, and lower ratio on the exhaust?
By GREENBIRD56 - 18 Years Ago
I think that the long arms are better off being used on the exhaust than the intake.

There is such a thing as too much intake (you probably aren't there yet) but there is just about no such thing as too much exhaust.

By Glen Henderson - 18 Years Ago
Mummert has tried this with mixed results, I am sure that it depends on the cam specs. He had an article in YBM awhile back and discussed this, don't remember the issue, but will try to dig it out.
By pcmenten - 18 Years Ago
JoilsonV8, your English is much better than my Portuguese. Smile



Using the high lift rockers on the intakes is a decent idea, but it will cause the cam timing to retard a tiny bit; favoring high speed at the expense of low speed torque. I'll probably do this on a 292 that had a high ratio rocker shaft assembly on one head and a low ratio rocker shaft assembly on the other head.
By Cactus - 18 Years Ago
If I decide to go this route, what length push rods should I use on a 1964 truck block with ECZ-G heads?
By DANIEL TINDER - 18 Years Ago
Jan,



Year/size of block not the issue, only head size. G head would use short pushrods in stock configuration, but with milling, cam, etc., long rods could increase valve lift if geometry allows (read Ted's Y-block Mag. articles).