Hi, does anyone know if a th350 has the same tailshaft as a b350, I believe that's what it's called. (The Buicks version of the th350) Thanks!
Sorry, I really don't know much about transmissions. Basically the trans that's in my Buick now. Is it still called a th350 if it's a Buick? I know it has the same internals. But the bolt pattern is different.
It's ok, I still don't know much about them but I do know a few things. I think that all GM cars equipped w/ automatics either had a TH-350(for the small block/v6 cars) and/or a TH-400(for the Big Block cars) from 1968(I think) to about/or close to the early 80's. Im basically estimating the time periods. My 1976 buick century has a TH-350! :Smarty:
Oh ok. Thanks for the help, sorry if I've ade this confusing. To make a long story short my Buick has a Chevy 350 in it. And my transmission pump is burned out. I'm gonna put a new trans in because it'll just be easier to do than rebuilding. I'm trying to decide if I'll get a Chevy th350, or a Buick th350. I was just wondering if the tailshafts were the same, as well as the rest of the transmission. Except the bolt pattern on the front. Again, thanks for the help!
Hey, no problem, no problem at all! The main difference between the chevy TH-350 and the buick TH-350 is the bolt pattern(as you said). Since the motor in your buick is a chevy 350, and since you are going to buy a new or better condition TH-350, you would most likely be better off finding one out of another chevy or buying one that has already been rebuilt out of a chevy, since the bolt pattern will be the same and you won't have to get an adapter plate for it or do any mods, in other words, it will be a "drop the old tranny out and put the new one in" kind-of-swap. Unless of course, the trans. you got in there is the one original from the car, since it has a chev 350, it might already have an adapter plate on it, but if the trans. is not original and it came w/ the chev 350, then more than likely it is indeed a trans. w/ the chevy bolt pattern. If you were to have a buick motor, per say, you would have a TH-350 that has what is called a "BOP" trans, B is for Buick, O for Oldsmobile, and P for Pontiac, and if you wanted a new or rebuilt trans then, you could find one out of any of the 3 cars and not have any hassle of swapping. Sorry for the long write-up, just trying to fill you in on some info.! :Comp: :TU:
Well I do know it's a Buick trans. I built the Chevy 350 and dropped it in about 2 years ago. As far as I know it's the orriginal trans, and yes, I did have to get an adaptor plate for it. Thanks for the help. I think I'll just get a chevy th350 then since that way I can get rid of the adaptor plate.
If you want to "get rid" of that adapter plate, I'd be interested in it! Not that I "need" it, but I may be able to use it in my Nova (Chevy 350 that needs a new TH350. I have 11 to choose from, but they're all BUICK trannies!). :Smarty: :bglasses: Let me know what you want for it, at your convenience. :beer
I've decided to keep the adaptor plate, sorry. I can get a rebuilt buick 350 trans for about $500 bucks, and a 2700rpm stall torque convertor for around $200. If I used a chevy trans I'd have to move the whole motor back about half and inch to componsate for the adaptor plate. Too much of a headache now that I think about it!
Thanks for letting me know. :beer A couple of things I observe here: 1) A Buick TH350 for $500 is outrageous! I build them, myself, for around $200, INCLUDING a Street/Strip shift kit! 2) You don't need a 2700 stall converter for a Street application, unless you will be racing a LOT (like Daily)! 3) You can't "move the motor BACK about a half an inch"! A TH350, whether it's Buick or Chevy or Olds or Pontiac, is the SAME transmission, except for the Bolt Pattern! :Smarty: You basically have 2 OPTIONS: Buy a Chevy TH350 (since you have a Chevy Engine, already), and it will bolt right in to the car, just like the one you have in there now! OR Buy a Buick Engine, that will bolt up to the Buick TH350, as it is! Now that you mention it, I guess I'll take my own advice and go buy another Chevy TH350 to rebuild for the Nova's 350 engine (the transmission shop Destroyed the one that's in it, so I have to do it myself to do it right)! :TU: Has anyone ever CUT the bellhousing sides off, to install a transmission BETWEEN Headers, instead of Removing the Headers to install the transmission? :af: :blast: There's only the top 2 bolts holding my bellhousing to the engine, because that's what the transmission shop did! I bought the car that way, I didn't have the work done like that, because I know better! :spank: You're probably buying a $500 Buick TH350 from the same guys who did the work on my Nova! :shock: DON'T DO IT! :TU:
there are also universal th350s out there with both the bop and chevy patterns on them :Smarty: , my 82 regal has one. cant say for sure what other years, makes, or models have them though.
