1. 100LL has the same PN ratings as the 100/130, so wartime ratings still apply (and since this B-17G was portrayed as a bomber post-war tankers are irrelevant). Wartime B-17G engines were rated at 1200 hp on take-off with 100/130, therefore 100LL allows the same. H-series Cyclones allowed over 1400 hp on the same fuel.
2. Don't make the mistake of assuming that something wasn't done in WW2 because "modern practice" is different.
2. Don't make the mistake of assuming that something wasn't done in WW2 because "modern practice" is different.