The bigger the engine, the bigger the supercharger/turbo needs to be to make the same boost. In a boost application like this, a 420"+ engine wont make much more power than a 390"+ engine. Why does Goss ONLY have 404" when he could easily be using 440" engines? Its been said A LONG time ago in Gen III land that for NA build as big as you can afford, high boost builds seem to take ALOT more power with a crankshaft 3.80 or smaller and a rod 6.20 or longer because of block strength when you get over the 1000hp mark.
+1
Exactly what I am saying about higher rod ratios. These engines don't like high cylinder side loads. Hellcat and 6.4 are stronger, but at a certain power level you need to be thinking about things like rod ratio because of stress issues.
Again, be careful because Apache and 6.1 heads are made of 316 (unlike the hellcat heads that are made of a more durable 356-T6) and are known to flex and lift under high cylinder pressures.
