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By rotormax - 12 Years Ago
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This is my first ford project, so be kind, I have a 54 mainline with a tired 239 Y, would like to put in another, rather then rebuild this one .My question is will all year Y blocks fit without modification, like motor mount location, bell housings, length and fan location I would like to just bolt it up to my 54 bell and 3 speed, that way all the linkage is sure to fit. or maybe in the future stick in a T5, I have had some trouble matching 235 6's in a 53 chevys in the past, not all engines were the same and some later truck engines are inches too long, and you need to move the radiator and some blocks dont have bosses for side mounts later water pumps are 3 inches lower. etc.. thanks in advance for you expertise. Bob.
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By Ecode70D - 12 Years Ago
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I have never had a problem switching Y blocks from one car to another.
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By Daniel Jessup - 12 Years Ago
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Bob,
Welcome to the site and welcome to y blocks. All Y blocks have the same side bosses for motor mount hookups. The difference you will find up front would be the truck/Thunderbird timing cover is different from the passenger car timing cover because this is where your front hard mount hooks up. (depending on what 239 is in your car, you may have the timing cover that takes a smaller water pump - this would be the EBU block. I "think" the EBV takes the 5/8" shaft water pump) You may already know that the truck bellhousings are different because they have ears underneath that are used for side mounts and on the trucks the engine blocks side mounts are not used. In your case, you are reusing your own bell, so no problems there. ALL Ford Y blocks from the 239 to the 312 will work on your bellhousing with 0 issues.
The difference you will find with engine cores to rebuild (or purchasing a used, running engine) is that the Truck/Thundebird accessories are different from the passenger car accessories (there are some nuances that are solely particular to Tbird as well). However, all of those things can be switched from block to block, and there are items on your current 239 that can be switched to another block quite easily.
You mentioned water pumps and fan/spacer depth. The 239 did have a smaller water pump from the other Y blocks, and there were later Y blocks that had larger diameter shafts (3/4") on them. Watch for that. I believe your water pump should have the 5/8" shaft. Your current spacer, pulley, and fan should be "swappable" from engine to engine, but you will have to purchase a water pump.
There are plenty of fellas on this site that are much more knowledgeable than I am. Once they get the chance I am sure they will give you more details and correct any misinformation I may have but I do believe I am spot on here.
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By Doug T - 12 Years Ago
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An y true Ford Y block will replace your 239. All blocks have the same tapped holes and so all accessory piece s from your car can be reused. This may not be the best combination but it will fit
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By 312T85Bird - 12 Years Ago
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The only '54 that I ever replaced a 239 in was a Country Squire wagon that we Called "The Wild Woody" and I replaced the 239 with a '57 312 and the only real mod was to move the radiator in front of the saddle for fan clearance, and addition of dual exhaust of coarse. The thing ate new '67 Chebby 327 Chevelles. Well worth the effort.
312T85Bird
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By rotormax - 12 Years Ago
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Is that necessary? could I use the water pump from my 239, or could I install a shorter shaft water pump from another year.
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By pintoplumber - 12 Years Ago
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The 239 water pumps are physically smaller than the water pumps used on the larger engines. You would have to use the 239 timing cover with the 239 water pump.
What I don't know is if the 239 water pump will move enough water in a larger, hotter motor. My 239 is now 283 inches and the water pump is big enough for that, however I haven't pulled the camper yet.
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By Hoosier Hurricane - 12 Years Ago
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To use the 239 water pump you will also have to use the 239 timing cover and fuel pump. But that is a bolt on, and the lower radiator hose will be the stock 239 hose. The bigger engines have a bigger lower hose, so to connect them to the '54 radiator will require a hose with two different sized ends. I'm not sure a 272/292 water pump is any longer than the 239, measure them.
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By PF Arcand - 12 Years Ago
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rotormax: If you haven't done so already, you should also seriously consider converting to a dual exhaust setup. Testing has shown that the front crossover exhaust setup is very inefficient..
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By Daniel Jessup - 12 Years Ago
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On the 239 Water Pump and the smaller diameter hose, etc. The last time I mixed a 54 radiator with a 56 water pump (last January) the local Napa had what I needed right off the shelf.
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By rotormax - 12 Years Ago
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Thanks Dan, what year water pumps have a short shaft , equal to the length of the 239 ,so I don't have to relocate the radiator ?
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By rotormax - 12 Years Ago
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Thanks guys all good gouge, it seems like the same problems I had converting my 53 chevy 2i6 /6 when I put in a 58 /235 but on that engine the water pump is in a lower position on the engine and the shaft is too long, after marked makes a short shaft pump to solve this, but cooling is still a problem because the fan is now located near the bottom of the radiator, and does not pull air through the middle so to prevent overheating when not moving forward, requires a electric fan located in the front of the radiator, if i can i will swap out the timing cover and water pump but as stated maybe the flow will not be enough to cool the bigger engine, it the 292 pump is not too long, I will keep those components in tact, I don't need to worry about the different size hose ends, I could do what I did with the same problem on the chevy ,I just cut a pice off the old hose and used it as a spacer and slipped the larger hose over it, and clamped it down ,never had a problem. but if napa has A hose that works I would use theres, does any one know the part number?
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By bn - 12 Years Ago
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Just a few thoughts concerning the coolant flow rate: The only time the lower flow rate of the 239 pump would be of an issue is when you are pulling more horsepower than a 239 engine is capable of - and then only on a hot day. If the 239 pump is smaller than the larger Y-blocks, then it seems reasonable to expect that the 239 radiator is also smaller. Again, the only time the smaller radiator would be of an issue is when you are pulling more horsepower than a 239 engine is capable of on a hot day. If the 239 radiator is smaller, it would have a lower tube count which means a smaller area in which the coolant must flow compared to a larger radiator. This would result in a higher tube velocity, which might result in too much turbulence and possibly air entering the coolant (not good). The suction side of any pump is always a critical issue. If you are going to use a smaller hose inside the larger one for transitioning, I would at least bevel the inside of the smaller hose on the upstream side. A better choice would be to use a special hose with the two end sizes you need with gradual transitioning. The reason, again, is to prevent air from entering the pump which could cause cavitation (very bad).
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By glrbird - 12 Years Ago
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Rotormax
Jim Young of Y-block magazine has had a lot of 54's with different Y-block motors in them. Try to contact him at yblockmag@yahoo.com He works nights and with the Magazine he is not home alot. I am sure he can help.
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By Daniel Jessup - 12 Years Ago
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I am pretty sure that the generator bracketry for the 54 on up Y blocks are the same on the passenger cars and that therefore the pulley backspacing and the crankshaft dampener should all line up... Maybe the fan spacer could be a different depth?
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By Hoosier Hurricane - 12 Years Ago
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That is Bruce Young, not Jim at Y Bock Magazine.
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