a standard BA XR6T bottom end will take 350rwkw no problems with a good tune. a leanout would not have cause the rod to bend, you have another problem there mate

a leanout would not have cause the rod to bend, you have another problem there mate

Just to clarify the bending conrods on aftermarket BA gas issue. During development of the BA E-gas Falcon, two cars suffered from bent con-rods. We were a bit mystified about why. After a fair bit of investigation and head scratching we found the issue was caused by intake backfiring. Early prototype PCMs had an issue that gave an intermittent spark problem (long since fixed), that gave backfire issues on the early prototype E-gas BAs. Our investigation found that a backfire causes a pressure wave in the intake manifold that supercharges the next intake event, it also ignites that cylinder at about 90° BTDC. When the cylinder then tries to compress this, the in-cylinder pressures can rise higher than the buckling limit of the con-rod, causing it to bend. Even when we tried the petrol engine compression ratio we still bent con-rods. We went through quite a few engines working this out.

Why do AU and earlier engines not bend conrods? (I hear you ask)
Well we tested that too and they do exactly the same thing as the Barra engine however because of the 2 valve head configuration, they just don't get the cylinder pressure high enough, we did several hundred backfires and the pressure got to just below the buckling limit but never over.

So new stronger conrods were developed for the E-gas engine while the petrol engine kept the standard ones. Therefore if you fit an aftermarket gas system to a BA petrol Falcon, and it has a backfire for any reason, you may bend a con-rod and destroy your engine (we did). Of course not all backfires will bend a con-rod.

gee the ba rods cant be that week to bend at 227rwks and 11.5 psi??
unless there are other factors?...
afaik au rods are similar or to an extent the same, i was at 265rwkw @12psi and am now pushing 14 psi into it and no probs...

it was running a generic "10psi" capa tune, i dont know why it was boosting higher it just was. i dont know if capa did a "hack job" because of the problems i had with them (numerous phone calls and took 8 weeks to get my flash tuner back).