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Doh...
It seems my initial measurements were off a little. It turns out the CX block measures 4.09 not 4.13.
How funny is that. What would this thing been used in? I guess it would have been a heavy duty replacement for a 390.
It will obviously go to 4.13 so I can go to a stock 428 piston, netting a 406 CI. What about going to 4.23? Only a sonic check will tell the tale, but this is the same block family the 1968 427 hadraulic engines came from, high nickle content reinforced crank saddles, etc.
Anyone done this? But then again why do it... If I kept it 4.13 It would be an excellent performer with a mild cam and 10:1 compression likely to put out 450 hp and still be done using standard sized piston$. Any future rebuilds would be equally inexpensive compared to custom pistons.
Any thoughts?
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michael
A man that is young in years, may be old in hours, if he have lost no time. But that happeneth rarely. Generally, youth is like the first cogitations, not so wise as the second. For there is a youth in thoughts, as well as in ages... Sir Francis Bacon (1561-1626)
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