Robert is correct except that you can put FE heads on an FT (I assume you just plan to use the block to build an FE? That is common) you just have to use FE manifolds. The other issue is the fact that there is no way that the block is high nickel content. That is fallacy created by eBay and swap meet vendors that are used to Chevy engines. Ford actually kept records regarding metal content of blocks and nickel was not a material that Ford engineers played with much and appears in the same amount in almost all Ford blocks from a 122 pinto to a 429 Super cobra Jet. They were much more fond of chromium. Having said that, Ford was different than GM because they pretty much made all of their standard engines out of the same metal and only a rare few performance engines were actually made from anything else. Below is a ton of information about this and I only share it as it is such a common misunderstanding and only by sharing can we kill the myth. Fortunately all the Ford documents pertaining to this still exist and what is posted below is but a drop in the bucket of what ford has available for anybody who wishes to research it at their archives. Hawkrod
Quotes from Dave Shoe an amateur archivist studying Ford FE engines (edited for clarity/updated information):
"CJ blocks were the same grade 30 gray iron as all other FE and FT production blocks. A very few of the racing 427 blocks were cast with added chromium. Levels of phosphorous was apparently controlled in blocks in the 1970s and heads to improve tensile strength, possibly changing the tensile spec to grade 32 or so. I'm not sure when the control of phosphorous was started.
A half-dozen 427 sideoiler blocks were cast of nodular iron by Bill Holbrook in the mid-1960s, but they destroyed the cutter bits on the engine block production line, taking the line out of service for longer than a shift. These nodular blocks were then sent out to be machined and delivered to Connie Kalitta for his Cammer dragster. Never heard back from Connie on how well thay worked, or if they worked.
Most FE maincaps were grade 30 gray iron, but some were cast of ferritic-ferritic nodular iron (same nodular as differentials, but different than crankshaft nodular). Nearly all nodular maincaps have a ladybug-shaped bump located on at least one maincap, typically #3. Crossbolted caps usually have a ladybug bump (or two) on all of the front four caps. Nodular differential caps also usually have a ladybug bump on them, though I guess some have an "N" marking. The bumps tell the machinist they must use special cutting parameters, as gray iron and nodular are machined differently."
"Dave Shoe
Admin When chromium is selected for this application, nickel is not beneficial. June 27 2006, 7:04 PM
Chromium is the alloy Ford preferred. Chrysler liked tin best. Both do the job well. Nickel can also be selected, but it was not a favorite of Chrysler or Ford in the 1960s. Invariably, it comes down to microstructure and chemistry. To achieve the higher-tensile gray irons, an alloy is chosen that will be low cost, easy on cutting tools, and effective.
Note that Genesis originally added 2.0% nickel to their blocks, but were forced to back off to 0.5% to make them economical to machine. There are applications for adding 2% nickel in some cast iron applications, but engine blocks is generally not one of them.
While the combination of chromium and nickel have particular benefits in certain types of stainless steel or stainless iron, they can actually work against each other when alloyed together in cast iron. It can be done, but there is a trade-off.
Ford seems to have selected chromium as their favorite addition during the 1960s. Addition of nickel to this chromium would have actually degraded some of the desired tensile properties, since the chromium acts to favor a particular cast iron microstructure, but nickel tends to favor formation of an entirely different type of cast iron microstructure. Together, they arrest each others ability to bias an alloy. Again, this can be beneficial in some cases, but not in this case.
All FE engine blocks contained small amounts of nickel. In this application, however, it is called an impurity, as it was not used to provide strength, nor was it added. Ford had experience machining special chromium-alloyed irons on the engine machining lines. Trying to get permission to run an alternate alloy meant you took on a great deal of responsibility if something went wrong (burned a bunch of cutting tools, shutting down the engine line for repairs). Many odd alloys were certainly run in the FE, but they were not as common as ebay auction descriptions might have you think.
According to Bill Holbrook (Ford engineer who developed the Cammer for drag racing), 427 blocks, whether the common FE/FT alloy or an unusual high-chromium alloy, were machined on the FE cylinder line. To reduce scrap rate, the engineer would have the 427 blocks machined to a certain transfer slot on the line, would pull the blocks out at, say, machine operation #120, would bring them to a specialty vendor with CNC machining capabilities (Paramount Boring was one of the favorite companies for this) to reduce scrap rate by holding tighter tolerances than were available on the line, and would replug the blocks back in on another day, up the line farther at a specific operation, such as #180.
Note that all raw 427 block castings got vidi-gaged (sonic mapped), and would only be accepted for the NASCAR or drag programs if the cylinder walls measured .125" or better. The alloy wasn't the big racing issue, the structure was. After sonic mapping, the blocks selected for racing would be sent out to town to be "Coaleen cleaned" (probably misspelled, "Coaleen" was a company in Detroit) to rattle the castings further and then chemically dissolve all the remaining core sand. The racing blocks were then pressure tested using water. Those that passed got placed onto the Engine Department's machining line to be machined though operation #120.
Different colors of a casting likely have more to do with differing solvents or oils sprayed onto the blocks, as some tend to dissolve the graphite flakes whereas others tend to leave the graphite flakes alone. Remember, cast iron is about 4% carbon by weight, and this means it is almost 15% carbon by volume. This is entirely why cast iron weighs about 10% less than steel, as it contains so much carbon.
Keep in mind, steel is far closer to pure elemental iron than cast iron is. Steel is nothing more than pure iron plus about 0.01% to 3% carbon added, whereas cast iron is pure iron containing between 3% to 5% carbon. Fortunately, cast iron is microstructurally very different than steel. Above 5% carbon, an iron alloy has little commercial value.
JMO,
Shoe. "
Details:
Large size to read:
http://www.supermotors.net/getfile/2631 ... ements.jpg
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http://www.supermotors.net/getfile/2631 ... romium.jpg
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http://mysite.verizon.net/tcherry3/pict ... ckinfo.jpg