Steam Vents, Front or Back?
Thread Starter
TECH Resident
Joined: May 2004
Posts: 792
Likes: 2
From: SoCal
Steam Vents, Front or Back? On my conversion, the LS1 intake is turned around facing and the bell housing. The steam vent pipe is of course at the front. I was going to simply leave it there since that placement is at the correct end of the flow of water in the heades before going to the exist side of the water pump. I need to make some special brackets and find that the steam vent crossover pipe is right in the way. So something must be done.
Some claim it doesn't matter which end of the heads the steam vents can be placed, but I wonder if this has indeed been tested by someone. This would be the easiest and cleanest solution, since I can simply swap ends. If there is any doubt, then I would rather leave the vent at the front. Has anyone re-configured the crossover pipe? Perhaps remove the pipe and?? What was your solution? Photo's would of course be nice.
Many thanks,
Andy1
Some claim it doesn't matter which end of the heads the steam vents can be placed, but I wonder if this has indeed been tested by someone. This would be the easiest and cleanest solution, since I can simply swap ends. If there is any doubt, then I would rather leave the vent at the front. Has anyone re-configured the crossover pipe? Perhaps remove the pipe and?? What was your solution? Photo's would of course be nice.
Many thanks,
Andy1
Andy,,,
I swap the intake on my car also,,, but leaving the tube in the front works OK for me. That said,,, check out LS1HowTo,,, the LS6 intake swap. The author changes the setup to two 2001+ tubes. It looks as if the orientation is different in the front,,, that is the radiator connection sides. Don;t know if that will solve your problem with the brackets.
see: http://www.ls1howto.com/howto/geniii...//IMAGE011.jpg
Hope this helps....
Fred
I swap the intake on my car also,,, but leaving the tube in the front works OK for me. That said,,, check out LS1HowTo,,, the LS6 intake swap. The author changes the setup to two 2001+ tubes. It looks as if the orientation is different in the front,,, that is the radiator connection sides. Don;t know if that will solve your problem with the brackets.
see: http://www.ls1howto.com/howto/geniii...//IMAGE011.jpg
Hope this helps....
Fred
That is a picture of the factory car,,,, mine is still just a pile of parts. Take a look at
http://www.factoryfive.com
http://www.factoryfive.com
Thread Starter
TECH Resident
Joined: May 2004
Posts: 792
Likes: 2
From: SoCal
Originally Posted by gtpvette
Andy,,,
I swap the intake on my car also,,, but leaving the tube in the front works OK for me. That said,,, check out LS1HowTo,,, the LS6 intake swap. The author changes the setup to two 2001+ tubes. It looks as if the orientation is different in the front,,, that is the radiator connection sides. Don;t know if that will solve your problem with the brackets.
see: http://www.ls1howto.com/howto/geniii...//IMAGE011.jpg
Hope this helps....
Fred
I swap the intake on my car also,,, but leaving the tube in the front works OK for me. That said,,, check out LS1HowTo,,, the LS6 intake swap. The author changes the setup to two 2001+ tubes. It looks as if the orientation is different in the front,,, that is the radiator connection sides. Don;t know if that will solve your problem with the brackets.
see: http://www.ls1howto.com/howto/geniii...//IMAGE011.jpg
Hope this helps....
Fred
Since I only have my 2001 as a reference, it only vents the front of the heads. The rears are what appears to be blank bolt on factory fittings (without the tubes). Apparently GM decided venting is not necessary in the rear, ergo my concern about moving them.
That your GTM?
Andy1
if the radiator was on the firewall, they would have been vented in the back and blocked in the front. they are only placed in the front for convenience, IMO.
id vent which side you could, unless its documented your motor is gonna overheat if not vented in the front.
good luck.
id vent which side you could, unless its documented your motor is gonna overheat if not vented in the front.
good luck.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'
Brett Foote
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
On The Tree
Joined: Apr 2005
Posts: 192
Likes: 0
From: S. Philly
I temporarily blocked my steam line to start my engine up the other day. When it got up the operating temp I started to see steam coming out between the intake and the passenger side's head. I was scratching my head and was wondering wtf is going on. Do I have a gasket problem with this suppose to be new motor? Later I reallized that it was steam coming out. After I connect the steam line to the radiator it was gone. yes it's in the front because you need to run the vent line to the radiator.
Originally Posted by LS1Cobra
I temporarily blocked my steam line to start my engine up the other day. When it got up the operating temp I started to see steam coming out between the intake and the passenger side's head. I was scratching my head and was wondering wtf is going on. Do I have a gasket problem with this suppose to be new motor? Later I reallized that it was steam coming out. After I connect the steam line to the radiator it was gone. yes it's in the front because you need to run the vent line to the radiator.
-Matt
Thread Starter
TECH Resident
Joined: May 2004
Posts: 792
Likes: 2
From: SoCal
Originally Posted by 67pete
The steam vents were put in the front because that is the highest point, engine slanted down at the rear, so which ever end is the highest point should be the end you use.
Anyone have a set of the earlier style vent lines that vent both ends of the heads that they're willing to part with?
Thanks,
Andy1
Thread Starter
TECH Resident
Joined: May 2004
Posts: 792
Likes: 2
From: SoCal
Originally Posted by 67pete
The steam vents were put in the front because that is the highest point, engine slanted down at the rear, so which ever end is the highest point should be the end you use.
Anyone have a set of the earlier style vent lines that vent both ends of the heads that they're willing to part with?
Thanks,
Andy1
Here's a question I haven't seen answered:
Does it matter if you run the steam line from the vent to the top or bottom of the radiator?
I am looking at replacing my radiator petcock (bottom drive side corner) with a 1/4 NPT w/90º to 1/4 tube out adapter, and I was going to run from bottom of radiator up to steam vent.
Bad idea? Does it matter?
Does it matter if you run the steam line from the vent to the top or bottom of the radiator?
I am looking at replacing my radiator petcock (bottom drive side corner) with a 1/4 NPT w/90º to 1/4 tube out adapter, and I was going to run from bottom of radiator up to steam vent.
Bad idea? Does it matter?
Originally Posted by Andy1
This does bring up an interesting point. As my conversion is a mid-engine application, the motor will sit flat/level so perhaps I should run the old style venting that attaches to both ends.
Anyone have a set of the earlier style vent lines that vent both ends of the heads that they're willing to part with?
Thanks,
Andy1
Anyone have a set of the earlier style vent lines that vent both ends of the heads that they're willing to part with?
Thanks,
Andy1
There are many of use who vent both ends. Mine's done w/ 5/16" fuel line.
The rear head ports are connected together & then teed to the front head ports which are also connected together. From there, the line is teed to the TOP of the radiator.
