Motor is a 5.3 with a truck Norris cam and valve springs, ported 862 heads, Long tube headers, trail blazer ss intake manifold. Took 3 months to swap the motor, bought a 2007 5.3 and 4l80e out of a express van. Tore down the motor and converted to gen 4. Pulled the crank shaft and swapped the reluctor wheel for the gen 4 one. Put all back together with gen 4 timing cover and oil pan. On stock fuel pump but the truck has 3.08 gear ratio in the rear 😭. Those gotta go