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LONG VS. SHORT WATER PUMP
“Hub height” is the industry term for measure a water pump’s height. The hub height is a critical belt-alignment dimension determining where the water pump pulley belt groove(s) fall in relation to your crank, alternator, power steering pump and air conditioning pulley grooves. The dimension from the mounting gasket surface to the outside face of the hub (where the pulley is bolted) is the hub height.
SHORT WATER PUMP BELT ALIGNMENT
BIG BLOCK & SMALL BLOCK
LONG WATER PUMP BELT ALIGNMENT - BIG BLOCK
LONG WATER PUMP BELT ALIGNMENT - SMALL BLOCK
LS BALANCER DIMENSIONS
With a straight edge placed across the front of the balancer; measure to the machined service of the balancer.
LS TRUCK 1999-2013: 3″ measurement
LS CAMARO/FIREBIRD 1998-2002: 3 1/4″ measurement
LS CORVETTE 1997-2013: 1 1/4″ measurement