Whats the max bore size on indy BB mopar aluminum block?

Not sure this is the max, but their 655 cu in with a 5" stroke calculates to a 4.57 bore.

Just a FYI they have replacement sleeves at 150.00 each, last time I bought.

Dave

In Indy's catalog they state the '655' ci is a 4.840 bore center .... sounds like a good engine to start with

If you have an existing block you need to sonic check it. They do not all come with the same sleeve thickness. IF you are ordering well 4.560 is the max that I have seen one. You simply run out of real estate. Todd

4.84" bore space is for the 600-13 head only. They have no other head platform for that block. They arrive at 655 through "creative" rounding 4.563" bore 5" stroke. We have a 600-13 engine with a 4.84" BS block. A predator is generally done at 645" 4.530X5" but I know of two that ran the bore out further to 4.56 with a 4.80" block. Not what most woudl call ideal but it can and has been done.