[Dominik]

Hi all,

with all the confusion about casting numbers (what's new?) I would also take the advise to get the cylinder wall thickness tested.

What is a good wall thickness anyway?

May I sleeve it back, once I messed it up?

Down here in South-Africa we have no 427 or 428 engines.
The other day I had almost bought a 410, but I am defenitely interested how to really find out about boring 390 to 4.13". There are plenty of 390s.

The blocks I have one cannot fit a 17/64 drill bit between the liners, not even the smaller one used to differ 352 blocks from 390s.

I may need some 4.13" pistons soon - and 428 cranks... ;-)

Cheers,

Dom, Cape Town

A proper Cobra should have a FE engine!