As a matter of passing, the early GM NV4500 transmission SHOULD bolt to any Chevy bellhousing that came originally equipped with an SM465. The first NV4500s are a direct replacement for the SM465.
best wishes,
Les
Everything I have read on the internet contradicts this statement. I have not seen a 1992-1995 chevy NV4500 in person, nor have I tried to mate one to an sm465 bellhousing. The sm465 bellhousing is the same as an sm420 bellhousing, with the major difference being the large round opening is larger on an sm465 housing.
sm420 is indexed to 4.686 inches
sm465 is indexed to 5.125 inches
Early Chevy NV4500 is indexed to 5.125 inches but reported to have its own unique mounting pattern.
Later chevy and all dodge nv4500 transmissions share a common bellhousing mounting pattern and are indexed to 5.60 inches.
