Your half dead 350's probably didn't have a 230/230 cam killing the bottom end. Any cam that you put in the motor has a dedicated 3000 to 3500 rpm operating range, like 1000 to 4250 (that will spin the tires)......or 1500 to 4750...... or 2000 to 5250...... or 2500 to 5750......or 3000 to 6250......or 3250 to 6500......or whatever.

Here's the verbage from Crane Cams concerning their 230/230 flat tappet hydraulic cam characteristics.......
Performance usage, good mid and upper RPM HP, bracket
racing; Street, Heavy, etc., auto trans w/3000+ converter,
oval track; Street Stock, Enduro, Hobby, etc., 1/4-3/8 mile,
serious off road, 10.0 to 11.5 compression ratio advised.

3000+ means 3500. And I doubt seriously that your motor has between 10.0 and 11.5:1 static compression ratio. Do you know the static compression ratio? Do you know the squish/quench?

The camshaft is not a stand-alone part. It must be coordinated with all the other parts of the car, such as static compression ratio, intake manifold design, carb size, weight of the car or truck, torque converter stall, number of gears in the transmission and their ratios...... and differential gear ratio.

Your 230 cam needs (ideally) 10.75:1 static compression ratio, 3500 stall converter (to get the motor up past the dead zone) and some rear gears up into the 4's. Problem with such a static compression ratio is that with iron heads, the motor will be prone to detonation on pump gas. The generally agreed upon limit for iron heads on pump gas is about 9.5:1. For static compression ratios above that, aluminum heads would be highly recommended.

Bottom line: You have over-cammed the motor.
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