Welcome, mitch, to the Club.
Remove & replace 327 with 350.
Everything will bolt up presently in the Camaro.

 

Yup you don't have to change a thing but why do it,327's are great engines.
Depending on what 350 you get it could be a downgrade.
I've always liked the 327s,same engine pretty much just a shorter stroke which lets them wind up nicely.
The DZ 302 in the early Z28's was also the same 4" bore with yet a shorter stroke but a nice solid lifter cam,high compression pistons a 4 bolt main forged steel crank and rods and 2.02" intake valve hi-performance heads.
A few goodies for that 327 and it'll run as good or better than most 350's.

 

You should do a little more research. Unlike other car companies GM small block came out in 1955 and stayed the same until the early 1990's in car and as late as 2003 in some trucks. The inside configuration changed but the outside is pretty much bolt in. You can pull a 265 from a 55 chevy and it will bolt into a 1989 Camaro with most of the 1989 parts including the trans, You may have a issue with a hole not being tapped for a bracket but the motor mounts and trans is the same. A lot of times when looking for parts the people with call for a SBC. (Small block chevy). Like buying headers, you don't buy a set of headers for a 307 you buy them for a SBC.

The SBC in its smallest configuration is the 265 and it largest is 400. The first 350 was in the 67 SS Camaro and was rated at 290hp but during the emission years a non performance version can be as low as 155 hp. So be carful buying a 350. Most built after 72 will be a downgrade from a 327.

Also keep in mind we are talking fitment. If you have a base 327 and you stick a GM ZZ4 350 crate engine in there it will fit but then it will rip a part the trans and possible the rear depending on how you drive.

 

Its an easy swap and you can use all your accessories as well. Its all depends on what you want to do with the car.There are a great variety of 350 crate and used engines out there.A lot of people do this swap to preserve the original engine ,And not worry about hurting the original.You can use your intake and such So it looks stock ,But can be a beast under hood.Welcome aboard and good luck to you. We all will help what we can.

 

Correct me if I'm wrong but if I remember right those early small blocks 1950's to early 1960's had front engine mounts and lack the bolt holes for side mounts.
You can bolt the later engines with both mounting holes in a '55 but not vice versa? Aside from that they are the same pretty much.
They also had a canister type oil filter not a spin on which can be converted with a bolt on kit and no PCV in the valve covers so there's a hole with a down tube at the back of the block for open air crankcase venting.

 

I am sure your right, I never did anything with those old engines. The first engine swap I ever did was a SB 400 from a 1971 station wagon into a 57 chevy, Two 10th graders figured it out and the only thing we bought was a shifter for the three speed auto. The kid who owned the car was one lucky SOB. His parents gave him the low mile wagon and he found a 57 chevy with a blown motor for $400. Made for a pretty nice car for a 10th grader. Course this was in 1981.

 

Don't forget the 262 SBC! Some of those 50's SBCs also had bellhousing mounts also. Don't give up on that 327, tear it down and see how it looks.

 

Chances are your 327 may be the original matching numbers engine. Removing it deflates the value of the car, to someone looking for an original. You can rebuild the 327 to how GM put it together for the Vette of the same vintage, and easily get 350 h.p. without batting an eye. What are you trying to achieve with a 350?

 

Those unbolt and come off if I remember right,I know the one for the powerglide does. I had one laying around for years and finally sent it to the scrap yard I think because nobody wanted it.