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Put a 440 in it

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C'mon....there is plenty of relatively simple things that he can try to help his package out. A 318, especially in an A Body will run.


You can likely make decent gains by increasing the stall speed of the converter, upwards into the 2300-2500 RPM range. Going further on the driveline components, a little more gear such as a 3.55 with a Sure Grip setup would help without sacrificing much in highway economy. Get the timing set with as much initial as it will take, likely 16-18°, with total coming in around 34-36°.

Start there and see what you come up with.

From there, #302 closed chamber heads with stock valves or even 1.88/1.60 valves would get the compression up some, or the aforementioned Magnum head swap. Lots of fairly economical things that can be done to aid performance.

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Exactly! That thin air at 5-6000ft is brutal,I know I used to live in it. at 2000ft I have healthy stock slant sixes that will burn a tire across the intersection!

At the very least I would stroke a fresh 318 to 390ci or so and put either 302 or 308 iron heads on it with a cam designed for your combo at that elevation. Or as others have said TURBO on a good healthy engine.