I believe I have a combintation that is going to work without a vacum leak. I have a EBY Block (256 cu 1954 Mercury), ECG-D Heads (272), and ECZ-9425-B intake (1957 four barrel). I have an MSD 8383 Yblock Distributer and an Edelbrock 500 Thurnder Series Carb. I have also added a set of ram horns from John Mummert and a set of polished aluminum finned valve covers. It all seems to fit up well and the gaskets for the intake line up perfect with both the heads and the intake (appearing not to have a vacume problem becasue of port mis-alignment).

My hope is to find a 292 and rebuild it while I am driving the 256. When the 256 gives it up, I will have all the parts (ram horns, distributer, carb, intake, and valve covers) to swap over to the rebuilt 292.

Does anyone see any potential problems I should be looking at with this combination until I get my 292 ready to go? Thanks for all your help.

Darrell Howard

Whitefish, MT (Outlaw 56 F-100)

Darrell Howard Whitefish, MT Outlaw 56 Ford F-100's

Darrell:

The only drawback I can see is that you may have to wait a long time for the 256 to give up so that you can install your 292.  These Ys are durable beasts.  Enjoy it.

John - "The Hoosier Hurricane"

Looks like you have a pretty good set up. If you were willing to take the time to change out the cam you might have a surprisingly good runner in that 256.  Enjoy 

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias

How old are you? You might be dead before the engine gives up

55Birdman  Hickory NC

Without giving away my age, I must at least consider the possibility I may be dead before my Y Block gives up. After all the input I am getting here, I am going to put a little more money and passion into the 256 than I originally planned. Who ever inherits my 56 F-100's can worry about changing out the 256 in thier lifetime. Meanwhile  I will enjoy what I have and give it a chance.

Darrell Howard Outlaw 56 and Y blocks forever!

Darrell Howard Whitefish, MT Outlaw 56 Ford F-100's

I’m still amazed at the number of 239 and 256 Y’s that are still on the road which is truly a testament to the engineering of the times.  On the flip side of the coin, trying to find a running scrub 265 in this day and age is like hunting for hens teeth.

Lorena, Texas (South of Waco)