04-03-2010, 07:13 AM
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CC Member
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Join Date: Jun 2005
Cobra Make, Engine:
Posts: 3,077
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Not Ranked
Somebody is missing something .026" no way!! In a bad environment, let say someone ran without antifreeze corrosion can conservatley be estimated at .005" per year. this block would hole through in 5 years just from corrosion!!! Is this not a boss block? are they thicker? Comes with a 1 year warranty, but then again the best warranty is one you never need. I guess the Dart Block Roush uses and KC in his 427 are thicker.
Quote:
Originally Posted by Excaliber
I just did a little math on that bore size, man I GOTTA be missing something here. If the block deminsions (bore center) are stock at 4.38 and the bore itself is 4.12 that leaves a cylinder wall thickness of something like .026. The 427 FE is considered a "thin wall" casting and it is twice as thick as that, coming in at over .050. Whew, these 427W's are "out there" on the ragged edge. No way your going to be able to bore it out if you loose a piston and need to rebuild. It would have to be a sleeve.
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