Any of the pumps w/ the anticavitation plate on the impeller work god. I've used both the Milodon and FlowKooler pumps w/ good results.
Plugging the bypass hole under the thermostat in the factory housings helps drop the temp also. Tap the hole for 3/8" NPT (no need to drill it), install a plug w/ a 1/8" hole drilled through it so it will bleed the air out. In the instrumented test I referenced on last week's post the housings with the open hole greatly outflowed the housing without the hole. Don't care what the flow test says. I can tell you that I, and everyone else I know that has done this modification, have seen around a 10° drop in temp b/c of blocking that hole.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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