I mean, yes, that's accurate. You're only adding more heat when you're actually making the extra horsepower compared to stock.
But there's a couple things I think you're overlooking. First, all the extra horsepower is not added just at the peak. For a strong engine, that extra horsepower comes in before the old factory peak. For example, a stock '71 340 was rated at 275 hp @5,000 rpm and 340 ft/lbs of torque at 3,200. Let's take goldduster318's 340 and compare. I'm using him as an example because he has a non-stroked 340 he posted dyno info for. His 340 dynoed at 470 hp @ 5,800 and 455 ft/lbs at 4,400 rpm. So lots higher, but higher peaks too. But that 340 is making 275hp at only 3,369 rpm. That's not maxed out on the drag strip rpm. That's everyday driving. Heck that was everyday on the freeway for me before I added the T56, I was frequently running at 3,500 rpm for extended periods. And torque? Well, the lowest recorded torque for that engine is 408 ft/lbs at 2,940. So it's pretty much always making more torque than the stock 340 ever did. That's heat too.
So yes, you're only adding more heat when you're actually making the power, that's true. But you don't have to be redlined at the SilverState Classic to be making that extra power and therefore that extra heat. With a strong engine, a stroker, etc, you could be adding more heat under everyday conditions. Thanks to
@goldduster318 for posting his dyno info.
MRL Performance 340, WOW!
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