6.1 Hemi 69 Barracuda Fastback Father Son Project
USCT Tunnel Perimeter Frame, and universal Crossmember
The 8HP70 short overall length makes the crossmember too far forward when it's bolted to the transmission using the USCT Transmission Bracket. It made the (Red) Mounting Brackets land on the frame forward of where the sides are parallel, making them not able to lay flat against the sides where they need to be welded in.
By using the Blackheart Transmission Adapter Plate (It's a few inches longer) instead of the USCT piece, it allowed the USCT crossmember to be where the (Red) mounts lay flat on the frame, and still allow bolting up to the transmission. Structurally, this thing is pretty beefy. IDK if they ever bolted in an 8HP70 in an A-Body with this though...
A couple things changed would make it work in better with an 8HP70 in an A-Body.
The Trans Crossmember is listed as "Universal" NAG1, TR6060, T56 Magnum, etc.
Have seen it in other cars and with other transmissions and it looked like it may have fit those applications a little better. But they may have had to "Make it work" too... First one for me. If I do it again, I will know how to make it go a little smoother.
USCT Tunnel Perimeter Frame, and universal Crossmember
The 8HP70 short overall length makes the crossmember too far forward when it's bolted to the transmission using the USCT Transmission Bracket. It made the (Red) Mounting Brackets land on the frame forward of where the sides are parallel, making them not able to lay flat against the sides where they need to be welded in.
By using the Blackheart Transmission Adapter Plate (It's a few inches longer) instead of the USCT piece, it allowed the USCT crossmember to be where the (Red) mounts lay flat on the frame, and still allow bolting up to the transmission. Structurally, this thing is pretty beefy. IDK if they ever bolted in an 8HP70 in an A-Body with this though...
A couple things changed would make it work in better with an 8HP70 in an A-Body.
The Trans Crossmember is listed as "Universal" NAG1, TR6060, T56 Magnum, etc.
Have seen it in other cars and with other transmissions and it looked like it may have fit those applications a little better. But they may have had to "Make it work" too... First one for me. If I do it again, I will know how to make it go a little smoother.
