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Old 07-29-2021, 10:49 AM
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JSchmitz JSchmitz is offline
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Join Date: Jan 2000
Location: Union, MO
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Quote:
Originally Posted by pfilean View Post
64 Roto HM and the bigger 4sp HM were both the same overall length and I think the mount to the frame was at the same location. You didn't say which transmission you had but I don't think it makes much difference if it is changed to a 400. The 400 mount should be about 1 inch forward from the original location on the cross member.
My car was originally a 3-speed stick '64 GTO. Had a 4-speed Muncie when I bought it. Currently has a TH400. I spin the crossmember around opposite and it works for both. Length is almost identical. My crossmember lands at the rear of the "step" in the frame where the crossmember bolts up. I have 1/2" spacers under the rear of the mounts. Thus this inquiry. I want to know how the original cars were with TH400's. Did the change the frame or something? Surely they didn't have spacers.