In 1989 I built a PAW blower motor kit: chevy 350 with a B&M supercharger and a B&M superjection kit.[about 400 hp] This was installed in my Datsun 240 Z with a Nordskog kit. The tranny is a GM 350 turbo. Initially there were cooling problems which were eventually solved with a 3 core radiator, oil cooler, and accessory trans cooler. This combinationj has run well for nearly 20 yrs, but now it gains heat at highway speeds.

I think I need to redo the cooling system. The question is, what to select. Motorsport lists several radiators: 3 core, 4 core, 4 core crossflow, and 4core cross flow aluminum. Should I keep the add on oil and trans coolers?

Any advise will be welcome, Bill

4 core aluminum. yes and yes.

what are you using for coolant?

also, what do you have for fans? if you only have 1 puller, get a pusher or two. also, seal up the radiator inlet area so that no air is going under the car or someplace else instead of through the radiator. i would do that first before changin out the radiator. if you're a member over at hybridz, check over there for pics.