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Can a 350 engine replace 305 in 67 nova?

Yes, a 350 small-block Chevy engine can replace a 305 in a 1967 Nova, but it's not a simple bolt-in swap. While both are small-block Chevys, there will be some modifications required. These may include:

* Motor Mounts: While the same general location, the 350 might require different motor mounts or modification of existing ones to fit perfectly.

* Exhaust System: The exhaust manifolds or headers will likely need to be changed as the 350 is physically larger.

* Steering: Depending on the specific accessories and exhaust setup, the steering shaft might need adjustment to clear the larger engine.

* Transmission: The transmission compatibility depends on what transmission was originally in the car and what you're planning to use with the 350. You may need an adapter or a different transmission altogether.

* Wiring: The wiring harness might require some modification or replacement, particularly if the 305 had different accessories than the 350 you're installing.

* Cooling System: A larger radiator might be necessary to handle the increased heat output of the 350.

In short, it's doable, but expect some fabrication and potentially some parts sourcing. Consult a mechanic or experienced Nova owner before starting the project to ensure you have a comprehensive plan. You'll likely need a shop manual for your specific year Nova as well as a manual for the 350 engine.