LONGACRE RACING SMI ELITE OIL PRESSURE GAUGE - 52-46741 This is the standard block

This is the standard block to go to 4''

Hex size is 1-1/8"

crankshafts and extends engine life

pop out the puck spacer

The Stage 1 (Cast Iron) Water Pumps for Small Block Chevrolets use new original equipment castings

LONGACRE RACING SMI ELITE OIL PRESSURE GAUGE - 52-46741 This is the standard blockThe next generation in instrumentation has arrived. Longacre Racing products is proud to introduce the all new SMi Elite Waterproof Gauges. Engineered for wet and dirty environments, the SMi Elite Waterproof Gauges provide the absolute best in waterproof sealing. These elite gauges provide the most precise measurements on the market with unmatched resistance to vibration, heat, and moisture. Manufactured with IP 66 certified methods to be waterproof;