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Old 12-10-2011, 09:04 PM
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Rogue_Wulff
Rogue_Wulff is offline
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Reading thru that FE spec chart, I see a *possible* use of the 428 pistons (assuming the block can go to 4.13). 390 crank/rods (406). The CD on the 428 pistons is very nearly the same as the 410/late 390, so the CR would be somewhere in the mid 8's/low 9s (I don't have access to all the required info to properly calculate).
That's grasping for straws, and pure speculation at this point though. Too many variables to consider, firstly the block integrity.
That's the only way I could see to use a 428 piston in your current block..... and can't even be positive it could work.

Perhaps it's time to start calling salvage yards to locate a buildable 360/390.....