I checked a '73-ish 440 motorhome block that has a cracked cylinder (water/freezing) this afternoon. It's dark back there, but the cylinder wall feels all of a 1/4" thick, if not thicker! We'll dig it out in the next few days and see if I can extract a piece of the cylinder wall for closer inspection. SC -----Original Message----- From: Don Gallimore [mailto:dongallimore@xxxxxxx] Sent: Wednesday, August 04, 2010 5:34 PM To: 1962to1965mopars@xxxxxxxxxx Subject: Re: 426 Industrial Block Thanks to all on the responses. Feel much better about using it when I build my Pure Stock 426w for 2012. Was a little nervous about it. Akron Don Donald Gallimore wrote: > Any idea if the 426 Industial blocks interchange with the automotive 426 block? > Wedge, not Hemi. > > Akron Don Gallimore > > ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! 1962 to 1965 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.