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Old 07-03-2014, 02:46 PM   #21
danzcool
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Originally Posted by gmoran1469 View Post
You don't have an aluminum block? Aren't all 05+ GT's aluminum blocks?
The OE equipment on 05-10 were aluminum block, but he has a built block. the cobra block and "boss block" are cast iron 4.6L engines. Since about 2011 if you wanted to start with a brand new block, your only choice was a cast iron 4.6L (unless you bought from a company that had stockpiled new aluminum blocks).
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Old 07-04-2014, 02:02 PM   #22
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The OE equipment on 05-10 were aluminum block, but he has a built block. the cobra block and "boss block" are cast iron 4.6L engines. Since about 2011 if you wanted to start with a brand new block, your only choice was a cast iron 4.6L (unless you bought from a company that had stockpiled new aluminum blocks).
Correct.

There is probably an aftermarket solution to this but the cost would probably be unbelievable. I have considered buying a used long block from someone like LKQ just to have the short block available to me. The bare blocks were going for around $1100 prior to them becoming unavailable.
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Old 07-07-2014, 03:13 PM   #23
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What are people using as their redline RPM with a forged stock stroke vs forge 5.0L stroker? I am at 6500 (motor cuts power after that) right now.

A stock stroke forged motor that revs to 7.5-8k would be sweet.
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Old 07-07-2014, 08:09 PM   #24
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I use 7K as the redline on mine, it has a mild stroke 4.75L (will soon be 5.15L with a bore on the same stroke). I think the ECU on the 05-10 has a limit of 7500rpm??? But a higher redline is more of a limitation of the valve springs than anything else once your lower end is forged.
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Old 07-07-2014, 11:25 PM   #25
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With better valve springs, 7,000.
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Old 07-08-2014, 08:43 PM   #26
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With better valve springs, 7,000.
Define better. Lighter, stronger? I don't know much about it so. All I see from e-tailers are comp springs except for livernois.

http://www.livernoismotorsports.com/...e-Springs.html
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Old 07-08-2014, 08:43 PM
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