kulas44
Guru
The only major difference in the 6.2/6.5 diesel and the 454 is the exhaust manifolds, starter and flywheel. The 454 flywheel will bolt up but she will shake like dog passin a peach seed, not the same balance. Also, if the 454s were older they are probably counter rotating and have either velvet drive or paragon gears. neither will work with the non counter rotating diesels. The hurth 630 or 800 is a good gear for this swap, but it is a down angle gear so motor mounts would need massaged a bit. Twin disc 502s would also work. I dont know of a straight in swap for either the VD or the paragon. The vd is a straight thru and the Paragon is a drop center gear. Possibly the later model borg warner gears would work, but I'm not familiar with them. In any case, one gear needs to be able to reverse the rotation of the shaft. I used the 630s in my conversion.