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This Quicktime spacer enables custom setups where the T-56 input shaft protrudes too much from the bellhousing for proper crank fitment. Measure carefully and avoid forcing any components to prevent severe damage. For T-56 to L83-L84 Gen V GM Engine installations, use Lakewood Transmission Installation Kit #50375, which includes the correct plate and hardware, though longer transmission dowel pins are needed (not included). The spacer is made from 6061-T6 Aluminum.For LS swaps, choose the proper pilot bearing based on the shaft protrusion: Small (1.094 inches) for GM LS1 vehicles (1998-2002), Medium (1.652 inches) for LS3, LSA, LSX, and LS9 vehicles (2003-2012), or Oversize (1.705 inches) for some aftermarket crankshafts and GM crate engines. Measure the protrusion with a straight edge: if between 3/4 and 1 inch (19mm-25.4mm), use the small bearing; if between 1/4 and 3/8 inch (6.3mm-9.5mm), test fit the medium bearing. If it’s a loose fit, use the large bearing.To install, remove the old pilot bearing with a mechanical puller (avoid hydraulic methods), clean the crankshaft bore, and press the new bearing into place by driving or pressing on its outer edge only. Ensure it is straight and fully seated. Once installed, spin the bearing’s inner portion to verify smooth rotation.Important: Do not disturb the press-in oil plug inside the crankshaft flange. Avoid hydraulic methods for bearing removal and installation. Ensure proper fit and alignment of the new bearing without forcing it.