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The Terminator
Engine/Tuning
Cast iron block vs. Aluminum block
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<blockquote data-quote="FireRed04Vert" data-source="post: 1560848" data-attributes="member: 21229"><p>This iron vs aluminum argument will never end. I have a good friend who is a software engineer for Ford (designs EEC software) He told me the conversations that went on inside of Ford about this subject were very heated at times. Ford WANTED to go aluminum for the weight factor (hence CAFE) But they felt there might be a durability issue because they knew these engines would be subjected to modification and more boost when used in sanctioned racing. They felt to build an aluminum block that would hold up to their standards would require new tooling...and THAT is expensive. Using an existing or previous production block was not considered as they felt it wouldn't stand up. So the comments about holding 1200 hp are not supported by Ford engineers. Remember, they are thinking about longevity issues more than anything else. A block that would hold up to race only environments would also have to hold up to many, many miles of street use too. Ford has VERY strict guidelines as to what any new engine must perform to when it comes to these issues. If it won't perform to these, they have no choice but to look elsewhere. The 4.6 aluminum didn't pass these tests. </p><p></p><p>What I want to ask my friend is now that the tooling has been done for the 5.4 GT engine block, are there any considerations to adapt that to the 4.6? Or are all new s/c engine combinations going to be based on the 5.4 and thus no need for the 4.6? I think if you look hard into what they are testing and producing, you will find the answer to their future plans and ideas.</p></blockquote><p></p>
[QUOTE="FireRed04Vert, post: 1560848, member: 21229"] This iron vs aluminum argument will never end. I have a good friend who is a software engineer for Ford (designs EEC software) He told me the conversations that went on inside of Ford about this subject were very heated at times. Ford WANTED to go aluminum for the weight factor (hence CAFE) But they felt there might be a durability issue because they knew these engines would be subjected to modification and more boost when used in sanctioned racing. They felt to build an aluminum block that would hold up to their standards would require new tooling...and THAT is expensive. Using an existing or previous production block was not considered as they felt it wouldn't stand up. So the comments about holding 1200 hp are not supported by Ford engineers. Remember, they are thinking about longevity issues more than anything else. A block that would hold up to race only environments would also have to hold up to many, many miles of street use too. Ford has VERY strict guidelines as to what any new engine must perform to when it comes to these issues. If it won't perform to these, they have no choice but to look elsewhere. The 4.6 aluminum didn't pass these tests. What I want to ask my friend is now that the tooling has been done for the 5.4 GT engine block, are there any considerations to adapt that to the 4.6? Or are all new s/c engine combinations going to be based on the 5.4 and thus no need for the 4.6? I think if you look hard into what they are testing and producing, you will find the answer to their future plans and ideas. [/QUOTE]
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Cast iron block vs. Aluminum block
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