LS1 Radiator question
Thread Starter
Launching!
Joined: Jun 2005
Posts: 272
Likes: 0
From: Chicago Area
LS1 Radiator question Hey guys,
I have a 1978 Z28 I put a 2004 GTO LS1 drivetrain into with an LS1 radiator.
I recently had the LS1 radiator bust on me, and I'm strongly considering going
with a better stock radiator since these are so thin and single core.
Any suggestions for an inexpensive superior option ??
I noticed even the aftermarket LT1 radiators are all the same 1 1/4" depth now as the LS1 rad's are.
My only question I have really is WTF is this upper port connection under the
cap that has a hose that goes back to the front of the engine ??? Is this really
needed or is this something I can do without ??? If so, how can I "delete" it ??
I have a 1978 Z28 I put a 2004 GTO LS1 drivetrain into with an LS1 radiator.
I recently had the LS1 radiator bust on me, and I'm strongly considering going
with a better stock radiator since these are so thin and single core.
Any suggestions for an inexpensive superior option ??
I noticed even the aftermarket LT1 radiators are all the same 1 1/4" depth now as the LS1 rad's are.
My only question I have really is WTF is this upper port connection under the
cap that has a hose that goes back to the front of the engine ??? Is this really
needed or is this something I can do without ??? If so, how can I "delete" it ??
Teching In
Joined: Sep 2007
Posts: 34
Likes: 1
The fitting under the radiator cap is a steam vent tube that purges air pockets and steam pockets from the cylinder heads.
If you get a radiator without the steam vent fittings, you can install a part into your upper radiator hose. See this link:
http://www.jagsthatrun.com/Pages/Par...g_LSI-tee.html
Also, attaching a fan directly to the radiator care as shown in your photograph will cause the radiator to leak.
If you get a radiator without the steam vent fittings, you can install a part into your upper radiator hose. See this link:
http://www.jagsthatrun.com/Pages/Par...g_LSI-tee.html
Also, attaching a fan directly to the radiator care as shown in your photograph will cause the radiator to leak.
TECH Enthusiast
Joined: Feb 2008
Posts: 503
Likes: 1
From: Ventura, Ca
You can also just get a tee connection and use it inline with your heater hoses. Cost is about $5 for the part. I had that originally but went back to the 4th gen radiator since I am using a factory fan setup. My lincoln Mark VIII fan setup blew my 40 amp fuse....
