Hey Dave:As Don mentioned, you will have to align bore your mains, essentially anytime you do not have the original main caps matched to the block you have.Donny, 64 Belvedere > To: 1962to1965mopars@xxxxxxxxxx > From: lt7dave@xxxxxxxxx > Subject: 426 SW > Date: Thu, 30 Dec 2010 08:46:52 -0800 > > > Will a 440 crank and main bearings work with a 426 SW block? I think the answer is yes because the 413, 426, and 440 RB blocks are the same other than the cylinder bore size - right? I know more than one of you will know the definite answer. > > For a bonus question, does anyone know if the newly repro max wedge heads work on a 426 SW block, or won't they because the SW block doesn't have the valve reliefs in the deck like a max wedge block does? > > Thanks in advance. > > Dave > > > > > > ---- > 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. > -- [Non-text portions of this message have been removed] ---- 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.