High ratio rockers

High ratio rockers

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By 55courier - 15 Years Ago

I was wondering if high ratio rockers were only used on the 312 motors or are they original to others engines as well. Is the number ECG-6564A thanks

By 55courier - 15 Years Ago

I think I answered my our question? I have 3 292 4bbl motors they all have the ECG-6564 rockers.

By DANIEL TINDER - 15 Years Ago

First issued in '56. Could be Ford went back to all lower ratio when they de-tuned the Y-Block ('58-59?).

By aussiebill - 15 Years Ago

55courier (5/16/2010)

I think I answered my our question? I have 3 292 4bbl motors they all have the ECG-6564 rockers.

We had them on 272,s from 57-58-59.

By ejstith - 15 Years Ago

These are the 1.5 ones? How can you tell the difference? Can you see the number with them on the car?

By DANIEL TINDER - 15 Years Ago

#ECG6564-B2 (?) 1:1.54 ratio. Can be seen on side of rocker.

By Hollow Head - 15 Years Ago

Here is 4 B2 rockers and two which are not B2:s. See the difference?

Try to search other posts about rockers, because there was a lot of discussion over it about year ago.