Ftrplt

I am putting an LS into my 51 Chevy truck. Does the radiator have to be a reverse flow? If so, any places to start a search. Thanx

Undertow74

iTrader: (45)

Just google LS radiators plenty of sponsors on here sell them. Depends on what you want for cooling. a stock ls1 radiator, a LT1 radiator, griffin, BeCool etc.......

Pop N Wood

iTrader: (1)

Doesn't have to be reverse flow. Doesn't have to be anything special at all. Chances are the one already in your truck will work. LS motors don't seem particularly hard to cool.

It might be worth upgrading because modern aluminum radiators are a good bit more efficient and weigh less than the old brass ones. The one in my Datsun is out of an astro van. Works fine

i r teh noobz

iTrader: (4)

My LS Z runs the stock copper/brass/rust radiator from 1988. Nothing fancy required.

bczee

iTrader: (12)

Standard flow direction for the Radiator, most anything will work. Just have to worry about cooling capacity.

Note, most older GM Radiators have a larger top/inlet (return) on the Radiator. As the LS Water pump has a smaller size.. not a big issue, but something to mod on the radiator or use reducers for the hoses. Some Hose have different size on each end of the hose and you might find one that works.

Some of the newer aftermarket Radiator are duel sized port on the upper return inlet. My does and I got if from eBay.

BC