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79 Engine Swap

Robert_Z_

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I'm going to do an engine swap on my 79 Trans Am.

The original engine was a 403 and I'm going to be putting in a Pontiac 455 for a 74 Trans Am.

I want to know what I will need to change out to put the new engine in?
 
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Robert_Z_

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Jun 21, 2022
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Location
Tennessee
Also, what are you doing with the old 403?

Is it in serviceable condition?
Sadly the reason I'm swapping is that the engine went bad.

I took it to a shop to have it tuned up, and the mechanic said the block was damaged.

The oil was filled with metal shavings.