Jeff99

will a bop 350 or 400 trans bolt up to a 1962 394 motor or does it need a adapter plate?

Oldsmaniac

No it wont you need an adapter if they exist, there is also a company that sells a Turbo 400 that will bolt up to the 394, very expensive it is.

joe_padavano

Here ya go.

https://transmissionadapters.com/collections/oldsmobile

Tedd Thompson

Ross Racing probably makes one of the best adapters out there. They modify a turbo 400 bellhousing much like the original. They also get a premium for their piece of art..... Tedd

oldcutlass

The link Joe provided is for a Chevy transmission, you need to double check for a BOP taransmission.

joe_padavano

The Chevy case transmissions are more common than the BOP cases. If you're buying a trans for this swap, it doesn't matter which bellhousing bolt pattern you use. Other than the location of a few bolts, the transmissions are otherwise the same. I assumed the OP was really asking about adapting a 1964-up GM automatic (ie, a TH400).

Olds64

Here's another supplier. Looks like they might not be doing the conversion now though. It's worth contacting them for some info if your dedicated to swapping to a more modern automatic.

https://www.forwhatyouneed.com/index.htm

Jeff99

I was asking about the BOP because I could get one for free my buddy.he just pulled a olds diesel out of a 79 Chevy c10 and it has a bop 400 behind it. Looks like most kits are for Chevy adaptor anyway. The slim Jim in my car is still working good.

KQQLCAT

Look at my old thread it will give you an idea whats involved.
https://classicoldsmobile.com/forums...lim-jim-17372/

Pat