jetback73nova

I would like to convert my rad to dual pass to clean up the hose routing in my nova. In my research I have found out that it takes more pressure to pump through a dual pass because the coolant is confined to a smaller path. my concern is that the stock pump will have to work too hard and its life will be shortened. also since I will be modding the radiator my self by swapping the intake to the right side and putting a plate in the center of the right tank the flow will be less efficient than it would be in a unit designed to be dual pass. Any thoghts on this would be greatly appreciated.

Thanks

GNCLONE

Modifying the radiator seems ambitious, could you find another with the inlet on the other side?

I think the load on the pump itself and the power would be negligible, maybe 3.5 horsepower rather than 3 horsepower?

just my .02

jetback73nova

I cant afford another rad right now but I think I can find someone to tig my old one for me plus I like doing things the hard way.
Does anyone have a dual pass on their swap?

MeanYellowZ

iTrader: (19)

We use dual passes on most swaps, it always makes for a cleaner installation and better cooling. I'm gonna say it would be simpler to just buy one also though, a couple hundred bucks will get you one and you dont have to spend the labor time (or money) and you can sell off your existing radiator.

jetback73nova

thanks for the replies, now that I think about you guys are right it its probly best to stick it out till I get some extra money and drop in a new one when I can.

MeanYellowZ do you use the stock pump on your swaps?

MeanYellowZ

iTrader: (19)

yes, and some have quite a few miles on them with no issues.

Pop N Wood

iTrader: (1)

You are worrying about nothing. Water pumps live just fine pumping against a closed thermostat on a cold engine. That is way more restriction than any radiator ever will cause.

jetback73nova

good point, I was just going off some stuff I read online with out thinking it through.

tsnow678

iTrader: (3)

I bought a new aluminum double pass radiator from Speedway for $179.99.

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01cherryreds10

iTrader: (9)

I am using a 31x19 dual pass radiator on my 79 Malibu swap. Haven't had the engine and radiator in at the same time, but it fits pretty snug in there. I think you would be much better off getting a new rad vs modifying one.