I agree with you that the 135 seems a lot. Anyway, it seems the tractor pull crowd routinely deals with mating engines. There are companies that cater to these guys, http://www.profabmachineinc.com/index.html for example. You can also check with tractor pull vendors. Also, here are a couple discussions to read through for ideas. http://garagejournal.com/forum/showthread.php?t=66801&showall=1 http://www.jalopyjournal.com/forum/showthread.php?t=133786 http://twotogo.homestead.com/TwoToGoinLineTwins.html Let us know how it goes. Thanks, Gary H. -----Original Message----- >How much pressure is actually required to keep a HB in place,,,,,,, I know >that the torque on the crankshaft bolt is 135 ft.lbs.,,,,,,,, but can see >not reason for that much pressure, the question arises from my son wanting >to couple two big blocks together, and the way he is wanting to do it >interferes with the use of the normal fastening ,,,, any thoughts out there? ---- 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.