65-70 Impala LS Trans Mount Adapters

These adapters let a 1965-1970 Impala or Caprice LS swap use a TR-6060, CTS-V T-56, MG9, 6L90E, 8L90E or 10L90E on a regular transmission mount. Longer gearboxes like these move the B-Body crossmember back, and the kit includes brackets for that.

Kit brackets support a rearward crossmember
Coupe and convertible crossmembers listed
Manual adapters include hardware

See the 1965-1970 B-Body LS install guide for crossmember placement by transmission. Mounts, headers and tanks are on the 1965-1970 Impala LS swap page.

$39.99 Cadillac CTS-V T-56 / standard TR-6060 Trans Mount Adapter

$39.99 MG9 high-torque TR-6060 Trans Mount Adapter

$39.95 Cadillac CTS-V 6L90E Transmission Mount Adapter

1965-1970 Impala transmission mount adapters

Adapters for six speed manuals

Adapters for late GM automatics

Adapter by transmission

Impala with a Camaro TR-6060 or CTS-V T-56: use the powder coated steel adapter, bolts included.
If the six speed is the CTS-V MG9, order the MG9 adapter instead of the standard one.
The CTS-V 6L90E adapter covers the 2009-2014 automatic.
An 8L90E or 10L90E tailshaft takes the same 8L90E adapter.

1965-1970 B-Body crossmember notes

With a 4L60E, 4L65E, 4L70E or 4L75E, the crossmember sits on the factory frame brackets after one new hole is drilled in each.
For those four speed automatics, the center mounting tab of the crossmember points to the rear.
A 4L80E, 6L80E, 6L90E, 8L90E or six speed manual puts the crossmember further back on new kit brackets.
The rearward brackets can be welded or bolted to the inside of the frame, slotted holes down and flush with the frame bottom.
Bolting them on means drilling the inner frame and cutting a 1 inch access hole on the outside.
BRP lists separate 1965-1970 B-Body crossmembers for the coupe and the convertible.

Notes from the 1965-1970 B-Body LS install guide.

1965-1970 Impala LS transmission mount FAQ

Where does the crossmember go with a 6L90E in a 1965 Impala?

The B-Body guide says longer transmissions such as the 6L90E and 8L90E move the crossmember rearward, onto new brackets supplied in the kit.

Can a 4L80E use the factory crossmember brackets?

No. The guide groups the 4L80E with the longer transmissions that need the new rearward brackets.

Is there a crossmember for a 1965-1970 Impala convertible?

Yes. BRP lists a 1965-1970 B-Body convertible crossmember apart from the coupe version.

Do I have to weld the new brackets?

No. The guide says they can be welded or bolted to the inside of the frame.

1965 - 1970 B-Body LS Transmission Mount Adapters