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426 Hemi Motor mount measurement? #2058709 04/20/16 11:49 PM 04/20/16 11:49 PM
Joined: Dec 2004 Posts: 88 Arizona 4 410mopar OP member
410mopar OP member 4 Joined: Dec 2004 Posts: 88 Arizona	I have a plastic mock up block, but its not fitting up with the mounts/k-member on my 65 Coronet. I'm wondering if the plastic block is too wide at the pads where the mounting bracket bolt. Can someone measure a the width of a real block at these machined pads?

Re: 426 Hemi Motor mount measurement? [Re: 410mopar] #2058772 04/21/16 01:25 AM 04/21/16 01:25 AM
Joined: Jan 2003 Posts: 7,489 Minnesota Hemi_Joel master
Hemi_Joel master Joined: Jan 2003 Posts: 7,489 Minnesota	11.480" I just measured an original 1967 Hemi block, and a Mopar performance iron replacement block and they were both the same. I hope this helps! Good luck, Joel [img]http://i.imgur.com/boeexFms.jpg[/img] 31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"

Re: 426 Hemi Motor mount measurement? [Re: 410mopar] #2059013 04/21/16 02:15 PM 04/21/16 02:15 PM
Joined: Dec 2004 Posts: 88 Arizona 4 410mopar OP member
410mopar OP member 4 Joined: Dec 2004 Posts: 88 Arizona	That explains part of my problem. My plastic block measure 11.811". I now need to machine down the pads, but which side? 1) Is the crankshaft centered between these pads? 2) My threaded holes are 3/8" course. Should they not be 7/16" course? 3) I now wonder if the threaded holes in my pads are in the correct location. Can you give me a measurement of where the threaded holes are in relation to the front and bottom of the block? Now that I have this plastic block I my as well make it correct.

Re: 426 Hemi Motor mount measurement? [Re: 410mopar] #2059234 04/21/16 07:51 PM 04/21/16 07:51 PM
Joined: May 2014 Posts: 103 muskegon MI v cummins member
v cummins member Joined: May 2014 Posts: 103 muskegon MI	Originally Posted By 410mopar That explains part of my problem. My plastic block measure 11.811". I now need to machine down the pads, but which side? 1) Is the crankshaft centered between these pads? 2) My threaded holes are 3/8" course. Should they not be 7/16" course? 3) I now wonder if the threaded holes in my pads are in the correct location. Can you give me a measurement of where the threaded holes are in relation to the front and bottom of the block? Now that I have this plastic block I my as well make it correct. Yes 7/16. Yes crank centered left or driver side 1.600 up from pan rail too center of hole (lower hole) 4.700 back from timing rail (front lower hole) Right side 2.050 up and 3.00 back (front lower hole)

Re: 426 Hemi Motor mount measurement? [Re: 410mopar] #2059261 04/21/16 08:59 PM 04/21/16 08:59 PM
Joined: Dec 2004 Posts: 88 Arizona 4 410mopar OP member
410mopar OP member 4 Joined: Dec 2004 Posts: 88 Arizona	A big thank you!! Looks like the main problem is that my block is too wide and the pads are not centered with the crank. The threaded mount holes are located correctly, just that they are 3/8". With your measurement I can fix all this. Don

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