Aside from what you see on the outside? Lesse, 56% leakdown with 15 bent valves. Cranking over it would spit back through the carburetor and we couldn't throw enough ignition advance in it to keep the exhaust pipes from glowing red. Nothing much else, 93 octane Sunoco, 11.9:1, our ported 906 heads, Erson solid roller around 278/280 @ .050 and about .800' lift or 280/288 and .780" (probably the later, hard to remember for sure, it was 2011 and I had both cams in my possession), Harland Sharp rockers, Ford blue paint.
It made 748 HP at home on 91 octane, with so much blowby it pegged the meter. We changed the ring pack and were breaking the engine in on Comps dyno when the valve guides seized.
