Wardrum

I need to order a radiator for my LS7 project and am trying to decide the best place to connect the steam tube to. Direct to radiator....or to one of the hoses? I don't want to drill and tap the water pump if possible. Any pics showing how you did it would be great. Thanks!!

Andy1

I suppose it depends a lot on your particular needs, space, and cosmetics (if that applies). If you're running a filler tank, you could plumb them there. Otherwise, the top of the radiator like a Camaro, etc., is it. BTW, these guys have a nice steam vent adapter fror 1/8 NPT which allows for running any kind of line; AN, hose, etc. They're cheap as well.
http://s41657.sites80.storefront-hos...l.aspx?ID=3289

Andy1

CorvetteTechInc

Another option is to just drill and tap a hole in the top of the waterpump and screw a bung into it and run the hose down just a couple of inches. Can't even see it when done and doesn't require a modification to the radiator or elsewhere.

70CamaroRS_LS1

I made an insert that I inserted into the upper hose near the vent tube. Just used a piece of exhaust tubing and welded in a bung. Then ran a beed around the OD to give the hose something to seal on. It's self explanitory buy I can get you a pic if you need.

mr2guru

iTrader: (16)

Those are sweet! I just bought some. That'll clean up nicely and I can run a rear crossover along with the fron vent with -3an

Wardrum

Thanks. $5.00 for the adapter and they are right down the road from me.

cam

iTrader: (9)

The steam tube should be plumbed into the highest point of the cooling system to avoid air locks. I am surprised that they guys who tap it into the water pump have not had problems

Darracq

iTrader: (1)

Could i just plug them up?

cam

iTrader: (9)

No plugging them is not good. The rear two came plugged on Z06's because the front two are higher ( from level ) than the rear so the steam migrates forwards and up and out the front two but it seems when LS1's take out a cyl its usuallly at the rear of the engine caused either by air crashing into the intake leaning out the rear cyls or maybe the steam tubes being plugged causing concentrated overheat leading to lean condition and kaboom.

Dont plug them plumb them

Speartech

iTrader: (14)

On some applications it is plumbed low right from the factory so going into the water pump is fine.

cam

iTrader: (9)

Hmm learn sumthin new everyday first I heard of it.

rigi

I am also going to order a radiator from Streetrodstuff for my 57 project with 1999 Camaro LS-1 .

Where do you recommend to mount the outlets and do I need extra fittings more than one vent hose fitting?

Speartech

iTrader: (14)

Here's my 5.3 GMC Envoy engine. The black hose is the the steam line. It is tee'd into the heater hose just a few inches above the ports on the side of the water pump. This is the stock factory setup.

cam

iTrader: (9)

Looks like its higher than the highest point of the engine or is it the pic? Tapping the top of the water pump would put it below the high point.

G-Body

iTrader: (4)

I "T" ed into the heater hose with my car when I put it together because I did not have an extra bung in my radiator. I did not notice any problems, but ever since I put the car together the heat has not been as hot as before. At least twice I pulled the hoses by the heater core and noticed it was air bound, I wonder if the TB bypass has been pushing air into my heater core. I know that I have an air pocket in my upper radiator hose because it is the highest point in the system, maybe the air was making its way into the engine, coming out the TB bypass and ending up in my heater core????

Anyway I now have a radiator with an extra bung so I guess I `ll have to change it and see what happens. I`ll post back with what I find, but it probably won`t be for a couple weeks, I have final exams next week so the only thing I`m doing is studying I`ll try and change it the week after and see how it works out.

cam

iTrader: (9)

I got a little curious about this so I checked and found according to the GM LS1 swap installation guide ( pn 88959384 ) it states on page 7;

Thats an exact quote they even put the exclamation mark so....

Then it says;


take it as you will

FirstGen

iTrader: (10)

Sounds dangerous however I ran with the air bleeds connected from one head to the other and not re-circulated back into the coolant system at all for over a year on a previous 6.0 swap...

Never had any over heating problems or anything like that...

Project GatTagO

iTrader: (7)

He already said it was lower. Why would he make up stuff? Oh...fooled you. Its really higher but I am going to make up ****....

Andrew

cam

iTrader: (9)

Drat! Thow arts a bowlngrekentuckyin!!!

Theres photos of all online if you search. I only wish to offer that of best knowledge possible.

Project GatTagO

iTrader: (7)

I am about as much a bowlngrenkentuckyin as you are.

As for offering the best knowledge possible, this topic has been covered as least a half dozen times already. John has posted that picture of his Envoy at least 2 times.

Andrew