The stock pumps are hard to beat with the cast iron impeller. We ran one on wife's car with close to 600 hp and it stayed at 160 deg. What size pulley are you running on the water pump. We ran the smaller pulley on the water pump. Worked great.
__________________
68 Firebird. IA2 block, 505 cu in, E-head, Solid roller 3650 weight. Reid TH400 4:11 gear. 29" slick.
Best so far 10.12@133 mph. 1.43 60 ft.
76 Trans am, TKX .81 o/d, 3.73 Moser rearend,
468 with KRE D-ports, Doug headers, 3" Exh.
|