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Old 10-05-2017, 09:57 AM   #14
bluex
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Join Date: Jun 2004
Location: Spartanburg, SC
Posts: 1,963
Re: Water pump for L31 with Serp

Quote:
Originally Posted by kacy View Post
How did this turn out?
I dont know what the OP did, but I have the L31 brackets on my 350 and I used a 88-95 water pump, pulley and thermostat housing. Its working fine, I have both the L31 and the TBI pulleys and the only difference between them is the center bore and bolt pattern. The diameter is the same.

Heres what I used and the year ranges

88-95
Water pump
Pulley
thermostat housing
upper radiator hose

96-99
Bracket set
Idler
Tensioner
Crank pulley
Power steering pump and pulley
A/c delete/compressor
Belt

2003 5.3L (suburban or tahoe with 145A option)
AD244 alternator

Lower radiator hose, heater hoses and power steering lines are stock parts from my 1978 C10. I swapped the pressure line fitting from the original pump into the L31 pump to allow me to use the factory line.
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