According to this it should bolt up to a BOP trans. http://www.curbsidecl***ic.com/blog...ontiac-215-six-built-by-pontiac-or-chevrolet/ I worked in Pontiac dealerships in the 70's and don't remember seeing one of those and knowing that it was a 215.
GM made a plate to bolt the Chev straight six to the BOP Turbo 350 trans, it came stock in seventies Buick Apollo, Olds Omega, and Pontiac Ventura. I can't swear to it, but your Pontiac engine probably had one if it came with the Chev style bolt pattern.
The 215 has the same bellhousing pattern as the chevy 230 and chev V8 engines. The AutoTrans behind them was a Turbine 300 two speed. that trans was a dual pattern that fit both the chevy and BOP engines. Ive owned a couple of 215 engines. They will not fit a BOP bellhousing unless its a dual pattern. The overhead cam Pontiac six has the BOP pattern on the rear of the block.
I had one it was in a 65 Pontiac Lemans. buckets & console. 215 six. It wasn't just a normal chevy pattern. It was a dual pattern with both the Chevy and BOP pattern. Tuff trans. We had the car when out son Chris was two> He would crawl up and push the floor shift into reverse while we where driving. It would kill the engine never hurt the trans.
GM made different versions of the Nova - Chevrolet Nova, Olds Omega, Pontiac Ventura and Buick Apollo. All used the Nova body shell with appropriate trim changes. And, the Nova got the Chev Powerglide while the others got the BOP Turbo 350 transmission. They all had their own V8 but they did not have their own six cylinder engine so they all used the Chevrolet 230 or 250. This meant they needed an adapter to put the BOP trans on the Chev engine. Hope this is clear. Around here (Canada) these adapters were prized by hot rodders because they allowed the use of a BOP trans on any Chev 6 or V8. I know they offered the Omega, Ventura and Apollo in the US but did they offer a six cylinder engine? I am surprised no one knows about this, maybe it was one of those Canada only deals. Later... Wiki knows about the Omega. They say they used Chevrolet 250 six cylinder engines with 2 or 3 speed automatics optional. Sorry I can't find a pic of the adapter.https://en.wikipedia.org/wiki/Oldsmobile_Omega
This must have been a Canadian thing. I've never seen a transmission adapter on any GM car. Why wouldn't they just put the Chevy t350 behind the Chevy 6? It was more common anyway. If you use an adapter the torque converter has to be extended a like amount. That would cost even more money. Not an expert on Canadian stuff though
Wolfman, not going to debate this with you. you can debate it with Wiki. The 215 Pontiac Chevy 6 derivative was b o p pattern as seen in the picture in this very thread. Also they never made a ST300 with anything other than a b o p pattern. Per Wiki. They did make a b o p pattern Powerglide. Supposedly there was a shortage of ST300 s. So they made some Powerglides with the Bop pattern only.
This pic is from years ago. It doesn't show the back of the block but it does show the bell housing that came off of it.
Anyone can put anything they want on Wiki. Just because its posted on wiki don't make it 100%accurate. The trans in my 65 lemans was not a powerglide. It had the same front pump and torque converter as a turbo 350. and I installed that trans behind a small block chevy using the 215 6 cyl flexplate flywheel. It was a dual pattern bellhousing. I seen the exact same trans in a 67 4 door lemans that had a 326 engine that belonged to a customer. The crank went bad and I pulled the engine and had the crank turned and overhauled it. B ut you are free to think whatever you want. I really don't give a durn. I still have the 215 Pontiac engine and its a chev bell pattern.
My Lemans was green with a black interior. the little 215 was suprizing more powerful that I expected from a small engine.
Mine was a tempest, had to sell to help pay for Daughters wedding, I miss the car, she doesn’t miss EX husband
Wolf, I believe you are correct here. Actually ,the pic above is a Chevy pattern. I had a 64 , about 20 years ago. I can't remember the pattern , because I put a dual pattern T 350 in it. It must have had a dual pattern ST 300 then, too. So much for internet "facts".
Few years late but I have two 64s and I've pulled engine/trans out of both at one time or another. Maybe this info is useful to someone who stumbles into this thread. The two speed is a Dual pattern (will bolt to Chevy and BOP patterns) ST300 and the "Pontiac" 215 straight 6 has the Chevy Bell pattern. Happy to send pictures. Swapped one ST300 to a Chevy patterned th350 and it was a bolt in swap to the 215, other than adding a trans cooler and lines.
The one you have is a Chevy block with a Chevy crank. This one is the 215 with the Pontiac flange rather than Chevy flange as listed in the link that I posted in post 4 in 2019 but I full and well know that few on here ever open links that have info. Note the BOP bolt pattern with no adapter and the Pontiac flange. Note also that the Pontiac 215 had PONTIAC cast in the side. https://www.curbsidecl***ic.com/blo...ontiac-215-six-built-by-pontiac-or-chevrolet/
I had a very tired Pontiac 215 that came with a Chevy C30. I replaced it with a 283 soon after. The 215 appeared to be close to a Chevy 230 at the time.
Just in case anyone needs the info, the Pontiac 215 inline 6 (1964-1965 only) uses the Chevy bell housing pattern. Chevy transmissions will bolt up directly. I've done it twice (swapping the ST200 two speed for TH350s for a little more get up and go). Bolt in swap, even the stock shifter bolts up.
The Jalopy Journal
