Is this guy pulling my chain?
The tune obviously needs work, the compression is only moderately high, the cam is NOT up to such a task. The shortblock is cheap, so given all that we have no reason to think the heads are anything special.
I would honestly be surprised if it made 400rwhp.
Again 440rwhp is possible, but this is not an example of how.
I'd say 440 on the spray.
Tell him to get it tuned. If the tune fixes the issue, pay for the tune on top of the price for the car. He should be totally fine with that. If he's not, you know somethings wrong.
As far as the HP #'s go there is no way that build is making 440rwhp all motor either. 400rwhp would be a good solid number out of that setup N/A.
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