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Auto vs. Manual cross member

Posted By: A727Tflite

Auto vs. Manual cross member - 06/14/20 01:27 PM

Can anyone post a side by side pic of an auto vs. manual trans cross member for a 69 B Body showing the difference?
Posted By: 340Cuda

Re: Auto vs. Manual cross member - 06/14/20 02:29 PM

This was a very long time ago but I remember changing a 1967 Plymouth Hemi car from a four speed to an automatic and I thought we used the same cross member and rear motor mount.

This was in the late sixties so no guarantees on my memory!
Posted By: DAYCLONA

Re: Auto vs. Manual cross member - 06/14/20 02:59 PM

Here you go Lou... Auto top/4spd bottom, .....if need be you can convert the auto crossmember to 4 speed use with a little surgery if that's the case?

mike

Attached picture bbodyautotop4spdbottom.jpg
Posted By: MO_PA

Re: Auto vs. Manual cross member - 06/14/20 08:18 PM

Can you show the auto and 4speed cross members for a 66,67, 68 Cbody Thanks.
Posted By: markz528

Re: Auto vs. Manual cross member - 06/14/20 09:37 PM

Originally Posted by MO_PA
Can you show the auto and 4speed cross members for a 66,67, 68 Cbody Thanks.


I believe only B Body differentiates between auto and 4 speed in those years Auto and 3 speed manual are the same for all. So C body 4 speed and auto and 3 speed manual are all the same.
Posted By: R/T1968R/T

Re: Auto vs. Manual cross member - 06/14/20 10:05 PM

I used an auto cross member in a 69 with a 4 speed, but the box had the later tail shaft. No mods needed
Posted By: MO_PA

Re: Auto vs. Manual cross member - 06/14/20 10:48 PM

So, the mount in the cross member is about 4 inches behind where it bolts to the trans. ? I'm working on my first, factory 440, 4speed CBody
Posted By: markz528

Re: Auto vs. Manual cross member - 06/14/20 11:22 PM

The crossmember is the same but the insulators are different. I don't know about 66-68, but my 65 C Body also uses the same crossmember for auto and 4 speed (but it is a one year only crossmember) and the insulator is quite wide. One application faces towards the rear and the other faces toward the front - don't remember which way the auto faces versus the 4 speed. The insulators are different because the angle must be reversed otherwise in 65 they look identical.
Posted By: Chargerfan68

Re: Auto vs. Manual cross member - 06/15/20 04:58 AM

My 68 charger r/t 4 speed and 68 r/t auto cross members are different, exactly like in the pics above. The 4speed one does not protrude out like the auto. Just a folded lip. This is for 68.
Posted By: 76Beeper

Re: Auto vs. Manual cross member - 06/15/20 04:17 PM

Originally Posted by DAYCLONA
Here you go Lou... Auto top/4spd bottom, .....if need be you can convert the auto crossmember to 4 speed use with a little surgery if that's the case?

mike


Mike,
Can you show the auto and 4speed cross members for a 1971 B-body?
Thanks.
Posted By: DAYCLONA

Re: Auto vs. Manual cross member - 06/15/20 04:25 PM

Originally Posted by 76Beeper
Originally Posted by DAYCLONA
Here you go Lou... Auto top/4spd bottom, .....if need be you can convert the auto crossmember to 4 speed use with a little surgery if that's the case?

mike


Mike,
Can you show the auto and 4speed cross members for a 1971 B-body?
Thanks.




Sorry no pics, but IIRC the 71-2 B body uses the same crossmember auto or 4spd, much like the 70-4 E body does


Mike
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