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Mild Modifications / Re: powerglide to 400 swap
« on: July 02, 2014, 03:33:11 PM »
Hi Heatmaker, Welcome to the site! I think that there are different length THM400's. I put a THM400 in my 67 I used to have and only had to put a 400 yoke on my PGlide driveshaft (and a new flexplate...and a different starter...and a crossmember...and a shifter). I think I read that it's the tailpiece that makes for a long or short THM400. Car is long gone, still have the THM400.