Originally Posted by
No_BS
You will need a hydro clutch bellhousing. Other than that it's an almost drect swap. You can't use the bell from the 351m, even though they are the same pattern. I put a T18 in mine not too long ago, and it's ok, but I'm picking up a beater later today for the ZF5.
I have swapped in an np435 to a 460 before and never needed a different bellhousing as long as the tranny came off a truck with a 351m/400. The only other part needed are a externally balanced 79-later flywheel and a different rear driveshaft.
I have been told before that a C6 that was behind a 6.9 diesel can't be used behind a 460, and with some tweeking I made it fit.