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max bore of GT block

5K views 7 replies 5 participants last post by  IUP99snake 
#1 ·
Does anyone know the maximum you can safely bore a 5.4 GT aluminum block? Thanks
 
#8 ·
With a 3.700" bore, that brings you up to about 358 CI. I've seen a few in GT500's, appropriately renamed "GT1000".
 
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