Just finished a customer of ours 5.9 build using our Iron heads, 9.4:1, small OE EFI friendly cam (around 210@ .050), our house 750carb / TTI step headers and Harland Sharp 1.7 rockers...
It made 418HP and 437TQ and idles at 800rpm with just a hint of a note at the tail pipe...
https://youtu.be/yIDG3RITx1A


Brian Hafliger