The reason is because the heads on the 260kW engine cannot support the lift that these cams generate, due to the fact that they run shorter valves than the 315kW engine.
CROW CAMS PERFORMANCE CAMSHAFTS FORD FALCON FG GT XR8 MODULAR BOSS 315kW 5.4L V8 wont fit 260kw. Can i get these higher lift cams in my XR8 260kw and what's needed to get them to work?
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