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Re: help with Hemi crank measurement.. [Re: HEMIFRED] #976750 05/01/11 11:28 AM 05/01/11 11:28 AM
Joined: Jan 2003 Posts: 16,928 NC 440Jim I Live Here
440Jim I Live Here Joined: Jan 2003 Posts: 16,928 NC	If a bunch of guys did the measurement I did for you, and they all were within +/-0.010" then you might get some confidence you are within that much. Just don't forget the centering hub on the crank flange sticks out beyond that measurement (for your trans input shaft). But when nobody posts, you have nothing to go by. I understand you are not going to have the crank flange face machined to that number, but rather to make sure the pilot hole area is machined to fit your trans setup.

Re: help with Hemi crank measurement.. [Re: 440Jim] #976751 05/01/11 12:02 PM 05/01/11 12:02 PM
Joined: Jul 2010 Posts: 3,502 SOUTH JERSEY HEMIFRED master
HEMIFRED master Joined: Jul 2010 Posts: 3,502 SOUTH JERSEY	Quote: If a bunch of guys did the measurement I did for you, and they all were within +/-0.010" then you might get some confidence you are within that much. But when nobody posts, you have nothing to go by. I understand you are not going to have the crank flange face machined to that number, but rather to make sure the pilot hole area is machined to fit your trans setup. like I said I would make the trans fit the crank but how about finding out what size pilot bushing the T56 used in it's former life and the depth of that hole. then you could just account for the difference in length compared to an 833 input extending from the bell housing home of the Sox and Martin Hemi Duster

Re: help with Hemi crank measurement.. [Re: HEMIFRED] #976752 05/01/11 05:54 PM 05/01/11 05:54 PM
Joined: Jun 2009 Posts: 1,212 QLD Australia Keith Black® OP pro stock
Keith Black® OP pro stock Joined: Jun 2009 Posts: 1,212 QLD Australia	Quote: Quote: If a bunch of guys did the measurement I did for you, and they all were within +/-0.010" then you might get some confidence you are within that much. But when nobody posts, you have nothing to go by. ... ... and the depth of that hole. then you could just account for the difference in length compared to an 833 input extending from the bell housing thanks again guys. the depth of that hole is > 0.850 in. (that's how far the input shaft extends forward of the bellhousing face and into the crank). if the crank flange is .600 from the bell-surface the drilled hole for the pilot will be ~1.45in deep from the crank flange surface. I agree, if anyone could take the same measurement from a Hemi 833 input shaft to compare that would be appreciated. I am grateful for your help I was looking to get as many measurements as possible (not to necessarily rely on any of them) to arrive at a final A/B comparison and decide what needs to be done then.I want to avoid either drilling the crank beyond std or modifying the input shaft but without measurements it's difficult. And there's a lack of reference parts here in Australia.Measure twice (or ten x !) cut once. -------------------------------- Darren Beale Keith Black Racing Engines®

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