Here are the two Y-Blocks I own. The yellow engine is a 256 in my 1954 Mercury. The other is a 1957 Thunderbird 312 that will be going into my Mercury in a few weeks.
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Here are the two Y-Blocks I own. The yellow engine is a 256 in my 1954 Mercury. The other is a 1957 Thunderbird 312 that will be going into my Mercury in a few weeks.
Hey ,54 what kind of adapter did you use on the 256 I have one it has a teapot 4 on it and I have tryed 2to 4 adapter the 4to 4 that I have but will not work can you help me the old 4 leaks I have a elc. fuel pump on it but it leaked with the stock pump.Thanks
Some really nice old iron there, '54!!!! Y-Blocks were my first go-fast engines back---well, a few years ago!!!!:rolleyes: Used to have a '57 Ford that came with a 292, friend of my Dad's was a Ford mechanic all his life.... For a summer's worth of me mowing and raking his lawn, he helped me find the parts and put together a 312!!!! By today's standards I guess it wasn't much, but to a 15 year old kid that thing would fly!!!!!
The adapter is a Chevy plate that I milled to fit the Y-block intake, then I milled it to fit the Holley Street Avenger 600 cfm carb. The yellow engine is a 1954 256 with only 41,000 original miles. I am taking it out of the Mercury and storing it. I am replacing it with the other y-block it is a 1957 Thunderbird 312.
I assume the "teapot" is the thing I always knew as the "haystack"Quote:
Originally Posted by old cars
Daffy, not sure about the "haystack", I have always heard it called a "teapot".
I still have the original teapot for this car, but opted to use the newer Holley for performance issues.
Nice, 1954Merc.
Thanks Rrumbler. This Mercury use to belong to the city of Bolder, Colo. It was used by the fire chief. It later sat in the state garage for 5 years until it was sold at auction to a farmer who gave it to his wife. She drove it for a few years and parked it in the barn. It sat there till 2003 when my Dad bought it and he never got to drive it, he passed away 2 months after her got it. He left it to me, but I let it sit till this year when I got it out of the garage. It only has around 40,000 miles on it and runs like a new car.
i've been into yblocks since i was 12 years old,i've run them on drag,stock car tracks and the street.the big mistake they made with the 312 was when they made the 312 crank the blocks were milled out for the bigger crank they removed the metal but did not move the main bearing bolt holes so there is very little metal supporting the bolt holes.they are fine but don't run them hard you will have fomoco parts all over the countryside.i've always ran 272's and 292's with greater success.check out the y-block book its still avaible on amazon.
get rid of the single exhaust,install duals and run smitty glass packs they sound great on a y-block.
The only reason there is a cross over on the 256, is because it is original. I am running 2 1/2" pipes with glass packs already. I don't plan on racing the '54 Mercury, I am putting the 312 in just to get more ponies to run with in these mountains in Kentucky. The 256 is fine, but this car weighs almost 2 ton and that's a lot for a small 256 and being that it only has around 40,000 original miles, I want to save it.
I also have a 292, but it is going into my next Rat Rod project.