Thread: Crossbolt 390 FE
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Old 11-14-2015, 06:28 PM
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undy undy is offline
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The 406 was the predecessor to the 427 and it was cross-bolted from the factory. The bore size was the same as the 428 (4.13") too. What is your block's bore size? Also, there's no bosses on the block where the cross bolts are which sort of points towards an aftermarket installation.

Are you east or Gulf coast?
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Last edited by undy; 11-14-2015 at 06:37 PM..
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