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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
WTB 1955 Courier emblems Mark, Jefferson City Missouri
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Group: Forum Members
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I think I answered my our question? I have 3 292 4bbl motors they all have the ECG-6564 rockers.
WTB 1955 Courier emblems Mark, Jefferson City Missouri
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First issued in '56. Could be Ford went back to all lower ratio when they de-tuned the Y-Block ('58-59?).
6 VOLTS/POS. GRD. NW INDIANA
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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.
 AussieBill YYYY Forever Y Block YYYY Down Under, Australia
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These are the 1.5 ones? How can you tell the difference? Can you see the number with them on the car?
Doing Fords for 45 years. '56 Customline Victoria
E.J. in Havana FL
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#ECG6564-B2 (?) 1:1.54 ratio. Can be seen on side of rocker.
6 VOLTS/POS. GRD. NW INDIANA
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 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.
 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)
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