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Old 09-26-2002, 05:23 PM
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Post y block heads

hi i have a 1954 merc engine in my ford truck eby 256 the heads are 54-55 ford ebz i want to replace the heads with 1955-56 t bird ecz-c will these heads work thanks

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Old 09-26-2002, 08:09 PM
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Yes they will. Be sure and run a '57 or later distributor, making sure the tooth count on the dist. gear is the same as the gear on your old one. If not I think you can easily change it. The '56 and earlier distributors are vacuum advance only, while the '57 and later distributor uses vacuum and centrifugal advance. What carb are you going to use?
The address below will bring you to a site that has many y block experts:
<a href="http://disc.server.com/Indices/5173.html" target="_blank">http://disc.server.com/Indices/5173.html</a>
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Old 09-26-2002, 11:51 PM
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Wasn't the distributor gear count different only on the '54 239 (according to engine plant)?

Don't forget a '57 312 4V intake so she will take a regular Holley (or 4100 Autolite).
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Old 09-27-2002, 08:51 AM
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I think it is true that the distributor gear tooth count depended on the factory where the engine was built for 1954. Couldn't recall the details, so to be safe, he should just count the teeth if he plans a change. The '57 or later 4V intake is a good idea, and there is now a new aluminum intake put out by Blue Thunder. Here is another good Y block link:
<a href="http://www.Ford-Y-Block.com/" target="_blank">http://www.Ford-Y-Block.com/</a>
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Old 09-27-2002, 10:43 PM
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Great Site!

Thanks for sharing...someone really did their homework there.
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Old 09-28-2002, 12:50 PM
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thanks for the info on the y block heads this truck is an f700 big job so im not looking for speed or perfomance so can i just keep the old distributer and intake and carb? thanks
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Old 09-29-2002, 02:15 PM
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Yes...The heads can be used just for service replacement.

I guess everyone here is a gearhead and only wants to talk Race Car...
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Old 09-29-2002, 05:13 PM
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Agreed. However-a later distributor will really wake the motor up, and is not an expensive swap. If you do use a later distributor, you can put a Pertronix magnetic trigger (about $70)in it to eliminate the points and the pain of replacing them ever again, which on the Y is not the easiest task-especially in a big truck like yours.

I used the old 3 bolt base Ford two barrel for years in my 292 with a later distributor and the engine ran really strong.

How are your rocker arms? If they are worn, I can steer you to a great supplier that will send you rebuilt shafts and rockers for under $200. Really first class work and really nice folks too.
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