50 Pontiac straight eight in a 50 Buick?

Hi, I have a 50 Buick that I drug off the hill at my dads farm. The straight 8 engine in it saw some weather and is pretty much ruined. My uncle has the straight 8 engine out of a 50 Pontiac he's not using. My question is whether or not the Pontiac engine will fit in the Buick? According to my parts interchange manual it won't work. I'm wondering with a little modification if this is possible. Any help would be much appreciated.

 

Plymouth didn't make a straight 8 , So what is it ?

 

if its a flathead straight eight it could be pontiac

 

Buick was using Dynaflow in '50 and Pontiac wasn't, therefore I'm going to say it will not fit. If you go through all the work of swapping out the ******, torque tube, rearend and rear suspension, then you may as well not even bother with the gutless '50 Pontiac motor.

 

Come to Cali...I have a sweet straight 8 buick motor,automatic ****** and complete torque tube and rearend for sale!!!!

 

Pontiac & Buick both had 3 speed manual trans. also

 

The Pontiac straight eight has the 3 speed trans with it. Would it be possible to replace both the Buick engine and the dynaflow trans with the Pontiac parts?

 

Not without changing the rear end as well---Pontiacs were open drive, and Buicks were torque tube. Sounds like an awful lot of work just to have an obsolete inline eight in it.

 

Is there a different engine that will bolt in without having to replace everything else?

 

Replacing a Buick str8 with a Pontiac str8 is going in the wrong direction as the Pontiac is a much less powerful engine. You would be better off with a good rebuilt Buick, or replacing engine trans driveshaft and rear end with a modern reliable V8 . Your choice. There is no easy , bolt up, quick fix V8. A properly built Buick str8 can be hopped up with 2 carbs and dual exhaust.

 

Looks like I'll have to find a Buick straight 8

Thanks for all the help, I appreciate it.

 

Go for a Nailhead, any flavor, stock rebuild, modern 4 speed and a better rear. You'll be glad you did it.

 

I have been looking for a straight 8 Pontiac engine and manual ******, so please let me know if you decide not to use it. Thanks!

 

If you do get a buick motor, try and find one outta a roadmaster. Buick had 2 different motors. Buick specials and supers had a 248 cid inline 8, and Buick roadmasters had a 320 cid inline 8, its the difference between 115 horse and 150 horse

 

Not only that, 51-52 320's had insert bearings as I recall, they're a little better motor.

The 320 also came in the Century during the years that model was produced.

 

The Model 70 motors (320) as of 1949, had hydraulic lifters as well.

 

Isn't there some problem stopping the 320 from fitting in the small Buick 248 ci engine bays (to long I think)?

 

The 320 won't bolt in. It's a physically larger engine.

I've got a '50 263 with low mileage I'm replacing with a hot rodded one. If you're not in any hurry, it'll be available once the new S-8 gets in place (I don't want to get rid of the old one until I know all the parts I need are accounted for). I'll be ditching the engine, trans, torque tube, and rear axle, and I drove all of it for many miles so I know it's good and reliable. PM me for more info.

 

If you find a 263 it is an updated motor,it is the one to get- if you have a buick special, or super.If its a roadmaster, its a larger engine and can be fitted with extra work. You can install an early V8 buick , motor with dynaflow and it will connect to the torq tube driveshaft, also some extra work. looks like you have a sedanet, thats good, as they are very popular, and you may be able to sell or trade it if you decide not to fix it.