IDIoit :::::: where did the 2600hp 6.9 how is that even possible
seen that and scratched my head we know the block cannot handle it and we also know the heads will lift even when studded and decompressed heavily at 25psi ish I have seen a few spikes of 30psi on a balls out engine i built and when it hit 30psi it wasn't happy the internals made alot of odd noises ( pre detonation and i found all the swirl chambers cracked and top of pistons were deformed ) so I backed out
and it held together but i never had the nerve to push it there again max i have ever seen on a 6.9 is 500hp and around 900ftlb of torgue ( wasn't me or my rig / engine ) and it didnt live long but in the time it lived it was insane want to talk about best sounding motor note out exhaust I have ever heard for just a few minutes doing a sled pull.
I love the exhaust note of these old IDI's 6.9 and 7.3 let me tell you with the upgraded valve springs and a modified injection pump and a cam non turbo or turbo for that matter our engines got a very low exhaust note and when our engines really go to working the exhaust noise is crazy good.