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Hey guys, new to the site. I'm going to be swapping out my 700r4 and putting in a 4L80E. I need some help finding a Transmission cross-member. I have a 1981 Pontiac Bonneville. Has anyone ever done this kind of swap before? Ideas where I can get one?
2 posters
4L80E Crossmember
81Bonnie- Newbie (Tier 1)
- Posts : 2
Join date : 2019-05-29
Location : Iowa
terry cronk- Freshman Member (Tier 3)
- 5th Year AnniversaryCelebrating 5 years of being our member!
- Posts : 249
Join date : 2015-08-19
Age : 76
Location : Mid-Michigan
Check out you length from the front of the bell housing on the 700R4 and compare to the 4L80 as to maybe modifying the older one.
You might be able to slide the crossmember back some to accommodate.
You might be able to slide the crossmember back some to accommodate.
81Bonnie- Newbie (Tier 1)
- Posts : 2
Join date : 2019-05-29
Location : Iowa
I was hoping to use the same mounting position of the bracket to the frame, but move the mounting point of the trans on the bracket.
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