Use the same mounts as a 350 or 400.
455s did have their own special wider frame and engine mounts but the 455 can be installed using the 350/400 pieces.
All the 1964 - 1972 V8 frame stands and engine mounts are the same, so they will accommodate 326, 350, 389 and 400 engines as well as working with 421, 428 and 455 engines.
Had a ‘73 455 in a ‘64 Tempest and a ‘74 455 in a ‘64 GTO and currently running a ‘64 421 HO in my ‘64 Le Mans convertible using the original 326 frame stands and excellent original 1968 400 mounts I had in my stash.
So yes I’ve done 421 and 455 swaps into A-body cars using the non-455 mount pieces.
__________________
1964 Tempest Coupe LS3/4L70E/3.42
1964 Le Mans Convertible 421 HO/TH350/2.56
2002 WS6 Convertible LS1/4L60E/3.23
|