Subtle machining is the only difference between the Condor 5.4 and Trinity 5.8 cylinder blocks, which are whittled from the same casting. One change impossible to see is the 5.8's deck height is 255.71 mm versus the 5.4's 256.00 mm. That minor 0.29mm difference accommodates the 5.8's thicker headgasket. Another invisible change is in the water jacket cores. The 5.8's cores were lightly massaged in spots to increase coolant flow while maintaining wall thickness. But major locations of interest to hot rodders, such as bellhousing bolt patterns, head retention, water and oil pump locations, and so on, are identical to 5.4 practice.