I have a 455 that ready to install in my 1968 Cutlass convertible.
The dyno readings are 380 hp and 525 pounds of torque.
I have a freshly rebuilt TH400 transmission also.
Disc front brakes / drum brakes rear.

Besides the torque converter and a larger diameter exhaust system I'm replacing.......

What should I be aware of
radiator......etc

thanks as always... everyone here is so generous with knowledge and I appreciate it!!

 

I'm in the camp of if it ain't broke don't fix it. Do your swap and see what your temps are running, then make an educated decision on a radiator.

 

I'll pitch my tent and see what it brings.... much thanks sir

 

You probably already know these things:
- The cross member needs to move back to the TH400 location (depending on prior transmission)
- E-brake cables need reconfiguration for the new crossmember location (use PNs for 442 AT)
- Driveshaft may be shorter (depending on prior transmission)
- Kickdown switch for TH400 (depending on prior transmission)
- PRNDL shifter replaced w/ PRNDSL (depending on prior transmission)

 

 

thank you thank you
I'll take these notes to the guys installing

very much appreciated !!!!

 

How many core radiator does it currently have? What does it have for a fan and shroud? If it is a rebuilt motor, why risk an inadequate cooling system?