Steam lines removal
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 327
From: CA.
St. Jude Donor '13-'14-'15
If you are talking about the coolant lines that run thru the T-Body then YES do it--- this is always a great simple mod------Running 200* water thru the t-body is best only used in areas with freezing conditions to prevent fuel icing----In normal aplications this 200* water heats up the t body and can alter the metabolic or moleculer level of the fuel making it less dense----and also increases the incomimg air temps--- that in turn removes timing---I have seen no side affects even in snow altitudes as long as you let the engine warm up with common sense in cold weather
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,439
Likes: 2,183
From: Buffalo Texas
don't remove them and eliminate, use a steam line kit and redirect them, eliminates air pockets !!! https://www.summitracing.com/parts/tfs-306sb601k
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
BAD IDEA! You have to have a way to remove trapped air in the heads. The 2001-2004 only have ONE steam cross over on the FRONT of the heads. The 97-2000 LS engines have a combined cross over pipe that vents steam from the front and rear of the heads.
When I did my heads Cam Fast90 install on my 02 ZO6, I added A REAR CROSSOVER TUBE ON THE BACK OF THE HEADS. to help eliminate air/steam pockets and improve cooling on cyls 7&8.
IF, you have a early LS engine, you can change it to the 01-04 steam pipe system and get rid of the piping manifold under the manifold. I would just massage that manifold down a little bit and keep it.
Bill PM me an e-mail address and I can send some pictures.
When I did my heads Cam Fast90 install on my 02 ZO6, I added A REAR CROSSOVER TUBE ON THE BACK OF THE HEADS. to help eliminate air/steam pockets and improve cooling on cyls 7&8.
IF, you have a early LS engine, you can change it to the 01-04 steam pipe system and get rid of the piping manifold under the manifold. I would just massage that manifold down a little bit and keep it.
Bill PM me an e-mail address and I can send some pictures.
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 327
From: CA.
St. Jude Donor '13-'14-'15
Ok I was talking about the coolant line that crosses over thru the T Body to heat up the T Body in cold weather--
The steam pipe is something else Sorry for the confusion--- The steam pipe is used to eliminate air bubbles and should be left as STOCK
The steam pipe is something else Sorry for the confusion--- The steam pipe is used to eliminate air bubbles and should be left as STOCK
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
YES, Remove the Throttle Body coolant lines to eliminate hot coolant circulating around the TB.. It will not hurt anything but it WILL NOT add any appreciable HP.
Drifting
Joined: Sep 2009
Posts: 1,862
Likes: 594
From: Prescott, Arizona
On my 2001 I added rear "steam" lines (coolant air bleed lines) to better allow air (or steam) out of the rear of the heads. The 2001 and later C5's eliminated the rear coolant air bleed lines, perhaps because the new 2001 and later LS6 intake manifold did not have room for the rear coolant air bleed line to pass underneath it.
Bad move, GM.
Bad move, GM.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
On my 2001 I added rear "steam" lines (coolant air bleed lines) to better allow air (or steam) out of the rear of the heads. The 2001 and later C5's eliminated the rear coolant air bleed lines, perhaps because the new 2001 and later LS6 intake manifold did not have room for the rear coolant air bleed line to pass underneath it.
Bad move, GM.
Bad move, GM.
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Drifting
Joined: Sep 2009
Posts: 1,862
Likes: 594
From: Prescott, Arizona
Bill, Your post some time ago was the reason I installed rear steam lines. I couldn't make the front crossover fit in the rear without cutting it, bumping the ends and using hose and a tee-
Team Owner
Joined: Oct 1999
Posts: 31,976
Likes: 487
From: Guinness Its whats for B'fast JAWGA
CI 3-4-5-9 Veteran
flipped it and pointed it toward the firewall. It fit fine with a FAST 92. Some have used truck crossovers on the rear. I plan on running HPDEs with mine, if it were a street car I'd likely leave the stock rear block offs and the front crossover.https://ls1tech.com/forums/generatio...line-help.html
https://www.corvetteforum.com/forums...eads-rear.html
Tech Contributor
Joined: Dec 1999
Posts: 32,910
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Very cool video! Didn't realize that the truck cross over was designed that way.. Another good option for the conversion.
I sent him pictures of the 97-2000 crossover set up.
You can massage that cross over manifold to sit lower and not contact the bottom of the LS6/2001+ intake manifold So there is no need to convert the early style to something else.
Bill
I sent him pictures of the 97-2000 crossover set up.
You can massage that cross over manifold to sit lower and not contact the bottom of the LS6/2001+ intake manifold So there is no need to convert the early style to something else.
Bill
Team Owner
Joined: Oct 1999
Posts: 31,976
Likes: 487
From: Guinness Its whats for B'fast JAWGA
CI 3-4-5-9 Veteran
GM has produced countless LS motors with the rear steam ports blocked off and just the front crossover without a problem in daily use. Plenty of C5Zs get tracked with the factory block off caps in the rear and the factory front cross over without a problem.
Last edited by 93Polo; Apr 29, 2019 at 02:05 PM.
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,439
Likes: 2,183
From: Buffalo Texas
many others had #7 cyl issues also !!!!! for so little time and effort mod it !!!!! ( no need to EVER have to purge the coolant system to fill !!!)
Last edited by Pounder; Apr 29, 2019 at 04:38 PM.
Team Owner
Joined: Oct 1999
Posts: 31,976
Likes: 487
From: Guinness Its whats for B'fast JAWGA
CI 3-4-5-9 Veteran
Sometimes you have to purge it other times you don't with the rear or not.