I knew it was in there some where but can't find it...could you'll help..
Ls3 water pump on LSX block and using a Be Kool Rad and fan set-up..the heater hose I was just going to run reg hose with no expansion valve...Will take ideas on that..set-up too..Tks for the help!

 

Outlets on the LS3 WP are in the same location as the LS1, so the standard hoses should fit

93-95 3.4V6 Fbody upper hose

90 F250 7.5L lower hose

Pics and mods to the lower hose are posted in my swap thread

 

Doesn't the LS3 camaro water pump exit on the other side of the pulley?


Also, while I'm thinking about it, some people may find that the lower hose may fit better if they section the hose and use 2 different pieces, with a coupler between.

I'm planning to use one of these, since my radiator doesn't have a drain:


They're about $20 from Jegs, and they really open up your lower radiator hose options because you can buy a couple different sections to get the bends you want. They're also great if your radiator needs a different size hose than the motor because they're available in different in/out sizes.

 

Hmm, wonder what LS3 I was looking at...

Try a 4th gen LS1 Fbody upper, they are shorter than the 3.4L hoses and may fit better. Otherwise cut some of the middle out of the V6 hose and use a coupler like Jim posted

 

More digging seemed to indicate that the 08 Corvette LS3 used the same water pump as the LS2, but the 09 and '10 are different... presumably the same as the '10 Camaro water pump.

I wish GM would offer a complete accessory system with the LS3 Camaro configuration. I cringe at the thought of what it would cost me to piece that together.

 

All the more reason to buy a dropout. Everything is already there

 

If I had any idea what I'd be spending on this motor, I would have done exactly that.