I have a 5.3 in a 69 camaro with the stock type rad.What rad hoses are you guys using?
Thanks.J

 

stock type radiator as in stock '69 radiator? That'll be the same as mine them. Right now I'm using autozone flex hoses that are the size/lengths for a '67-69 Camaro w/ 327. They fit OK length wise, but they are like 1/8" too big for the LS1 side. Right now I just have them clamped really tight...

I'm probably going to go with a set of those metal flex hoses--they come with adapters to neck down to a variety of sizes. Spectre and a couple of others vendor make them.

 

Another suggestion for your upper, is to take your radiator and have the neck cut down, braze/solder the correct size tube on to the end of the neck, that why you can use the correct LS1 size Radiator hose and matches the Water Pump neck.

 

i have the same hoses as rodder. summit sells a radiator hose size kit, its a rubber plug that slides into the radiator hose end and makes the hose end smaller. i have one on my water pump. it converted my 1.5 inch hose into a 1.25 inch hose.

http://store.summitracing.com/partde...5&autoview=sku

for the lower i just forced a 1.5 inch hose on the 1.75 inch radiator outlet.

works fine.

 

I had brought a eBay Radaitor (Universal was the store name), the upper neck had a duel size neck.. it had the normal 1.5 but necked down to 1.25 to be able to use either size. That is why I suggested mod'in your current radaitor.. I figure a good Radiator shop should be able to add reducer for not too much $$.

 

good luck with that one. i tried 4 different shops around here that weld aluminum and no one would touch the thing.

 

i bought a conversion one from afco, not sure if they have one for camero
jegs and summit have an adapter that is 1 1/2 x 1 1/4, and a petcock-you could use that maybe for the top, and unscrew the petcock and use that for the bypass hose maybe-the s10 trucks had some smaller hoses-you might get away with an upper hose for a 2000 5.7 camero, and your old hose to the radiator and the adapter
the bottom hose is 1 3/4, i think a truck thermostat housing is at least 1 1/2",
and one of those rubber bushings (reducers) and you might get away with a stock lower hose-even some stock upper hoses might work with the bushings
i usuall go to the auto store with a bent wire and meas tape, they let me roam thru them