hey there ive got a VN 5ltr s1 1989 (dunno if this helps with all the details)
i smashed my gearbox to peices and ive got another gearbox but theres a problem the bellhousing wont bolt up to the gearbox (to make things a bit more understandable i bought the new box off ebay was told its a v6 box i rang holden they said boxs are the same (like input shafts etc etc) now it did have a v6 bellhousing on it but the box's look identical) the only difference i can see on the box is that it says borgwarner basic -1 (the old box) and the new says borgwarner basic -4 can anyone help is the new box newer like would i have to get a vp-vr bellhousing to suit???
To me it sounds like the gearbox doesnt suit your car.and if i was you i wouldnt put a V6 box behind a V8.Just go to a transmission shop and get an exchange one that will suit your VN V8.Also im pretty sure that V6 box's have a different bell housing to V8 ones.