Want this question answered?
The 455 will fit. The transmission might have a shorter tailshaft, though.
yes
No. they are different head designs.
Yes
No
Yes, it is possible to drop a 455 engine into an 1988 Oldsmobile Toronado Trofeo, but it may require modifications to fit properly. A compatible transmission option would be the TH400 or a 200-4R transmission, which can handle the power of the 455 engine.
Chevy, Buick and Cadillac shared the same bolt pattern as did Oldsmobile and Pontiac but, some transmissions had two bolt patterns to fit all GM blocks. If your Chevy Turbo 350 transmission has the dual pattern it will fit the Oldsmobile engine, if not it won't fit.
unfit 455
not if it is an Oldsmobile engine, Buick, Pontiac, and olds had the same bolt pattern in the 70's, different from Chevy
a 455 you need to buy a engine mount kit from national parts depot or just make it easy and weld them in place. I put in a 455 into a 1970 lemans, the car never came with a 455 but i had no problems mounting it in. Attach the motors mounts to the frame mounts put in the engine check and make sure it is level attach it to the trans then weld away yoy will love the 455 its a beast.
Hey Carol==If it is from an Olds cutlas it probably will although some had a 3 speed and some a 4 speed. GoodluckJoe
No