Can i put a bigger motor in my 97 cavalier z24?

It is possible to put a bigger motor in a 97 Cavalier Z24, but it would require some modifications and custom work. The stock engine in the 97 Z24 is the 2.4L LD9 inline-four, which produces 150 horsepower. A possible engine swap could be the L32 3.8L V6, which is found in cars like the Pontiac Grand Prix and Buick Regal. The L32 produces 200 horsepower, significantly more than the stock engine.

For this engine swap, the engine mounts, drivetrain, and other components would need to be modified to fit the larger engine. Additionally, the 3.8L V6's exhaust system as well as transmission will need to be changed. All these require advanced mechanical skills, fabrication capability, and thorough modification plans. As the Z24 does not come with disc brakes it would be highly advisable to change them to at least the front. An upgraded suspension would increase performance.

Before attempting such a modification, it's important to carefully consider factors like cost, potential complications, legality, emissions regulations, and your mechanical expertise. A project of this scale may require extensive knowledge and professional assistance from trained mechanics or custom car builders. Additionally, this modification could potentially lower fuel efficiency of the vehicle or even the reliability because is not something done on series Z24. Overall, while it's technically feasible, such an engine swap can be a complex and demanding undertaking.