Just got off the phone with HOPenn and they were going to check but didnt seem to think they had a spec on boost. They are going to send me the dyno sheets for the engines from when they were built/factory tested. No load wot rpm is right around 3000 (+/- 20 or so he said- marked on valve cover but I cant see it under the deck). Still have to photo tach. Amazing variations in EGTs between engines. Mine are 750 or so and people talking 1100 and change. Would be an interesting thread on its own. Boost/EGT comparisons.