Originally Posted By jughed
Originally Posted By Cab_Burge
I think all the early blocks where the Mega blocks that didn't like to be bored much over 4.410 shruggy
Maybe someone on here will know when the first World cast iron replacement blocks started entering the Mopar inventory luck
One of the local racers had several of those early Mopar Mega blocks that had cracked at 4.500 but lived at 4.410 to 4.440 bore sizes confused
I would have it sonic tested before boring it any bigger twocents


I must have lucked out on this early ('01) block. The builder stated in the notes that it's good up to a 4.56 bore



Probably need to verify that because cab is correct. Those early ones were kinda thin.

Last edited by madscientist; 11/30/16 10:43 PM.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston