C6ME Block

[lovehamr]

Does anyone happen to know what the max overbore for a C6ME 428 block should be?

Thanks, Steve

[PANAVIA]

You May want to verify that it is a actual 428 Block, as GT ( S code ) mustangs had a C6ME 390 block in some cases. (you can machine things but, it helps to know EXACTLY what you are starting with.)

other than that you may want to take it to a machine shop and verify you have material to get an overbore you want. (hopefully prior to purchase)

Anything more than .030 should require careful inspection ;as some that I have seen at .060 are overheating clunky chunder monkeys.

You can always sleeve, but that is an involved process. and with the repro blocks out there , there is no real need to sleeve.


--Steve

[lovehamr]

Thanks Steve.

Steve

[SantaFe66]

My 390 block is a C6ME and I had it sonic checked to see if it would go to 428 bore (4.13"). It would, so that's what I did. Always a good idea to sonic check a block since core shift is a reality with lots of these FE's. That way, you know for sure you're OK.

Paul

[ZOERA-SC7XX]

Originally Posted by SantaFe66

My 390 block is a C6ME and I had it sonic checked to see if it would go to 428 bore (4.13"). It would, so that's what I did. Always a good idea to sonic check a block since core shift is a reality with lots of these FE's. That way, you know for sure you're OK.

Paul

I did the same and it worked out fine. Be sure to have the machinist check the wall thickness.