Coolant crossover conversion questions.
Thread Starter
Staging Lane
Joined: Mar 2006
Posts: 58
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From: Blue Springs, MO
Coolant crossover conversion questions. I'm still new to the LSx stuff and am doing a retro fit into an older vehicle. My question revolves the coolant crossovers. I am gonna convert mine over to braided fuel hose and fittings and am curious weither I should just block off the rear or connect all 4 together? Would there be any difference in cooling system demand levels to decide which to do (i.e. horsepower level)?
Thanks!
Thanks!
Last edited by NIIN20; May 18, 2007 at 02:25 PM.
Thread Starter
Staging Lane
Joined: Mar 2006
Posts: 58
Likes: 0
From: Blue Springs, MO
Originally Posted by 5_02ls1
this is the way i done mine"way cheaper"i connected the2 rear lines on mine..it works great too..
TECH Enthusiast
Joined: May 2006
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From: south jersey
the back being plugged off is beleived by some to help make no7 go.. i have a fast and even though it was a pita to make; all mine are connected. went over the intake instead of under. made my own blocks out of brass and ss tube to connect to rubber line and a few t fittings.
Thread Starter
Staging Lane
Joined: Mar 2006
Posts: 58
Likes: 0
From: Blue Springs, MO
Originally Posted by 00454sscamaro
the back being plugged off is beleived by some to help make no7 go.. i have a fast and even though it was a pita to make; all mine are connected. went over the intake instead of under. made my own blocks out of brass and ss tube to connect to rubber line and a few t fittings.
So your saying that some think that blocking the rear steam crossover contribute to the problems with the #7 cylinder? Thanks.
Originally Posted by SSdreamz
blocked mine, when i converted to the LS6 intake......my number 7 spun a rod bearing...could this have been the culprit?????
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Then that is garbage. They wouldn't have blocked them off if there was anything wrong with it. I believe that the steam will travel to the highest point and then go to the radiator which is even higher.
Originally Posted by NIIN20
I'm still new to the LSx stuff and am doing a retro fit into an older vehicle. My question revolves the coolant crossovers. I am gonna convert mine over to braided fuel hose and fittings and am curious weither I should just block off the rear or connect all 4 together? Would there be any difference in cooling system demand levels to decide which to do (i.e. horsepower level)?
Thanks!
Thanks!
If the rears are capped off, and the front is still joined together you should not have an issue. this is the way that all ls6's came from the factory, as well as 01-02 f-bodies equiped with a ls6 manifold. If you see a number of number 7 going out, look at the situations. No2, fI, high mileage, beat to ****, or generally worked on by someone who should not work on a car, or other factors. Now do not get me wrong here, things happen, but if proper coolant manitaince is done and motor is maintaned, things usually just do not happen out of the blue. Cap them of and put your time and money elsewhere, IMO
Thread Starter
Staging Lane
Joined: Mar 2006
Posts: 58
Likes: 0
From: Blue Springs, MO
Originally Posted by daryl2cb@yahoo.com
If the rears are capped off, and the front is still joined together you should not have an issue. this is the way that all ls6's came from the factory, as well as 01-02 f-bodies equiped with a ls6 manifold. If you see a number of number 7 going out, look at the situations. No2, fI, high mileage, beat to ****, or generally worked on by someone who should not work on a car, or other factors. Now do not get me wrong here, things happen, but if proper coolant manitaince is done and motor is maintaned, things usually just do not happen out of the blue. Cap them of and put your time and money elsewhere, IMO
Thank you. I was just speculating ideas from the Gen1 stuff like tying the coolant passages together front to rear, etc. Didnt know if any of that had any merit on these engines or even mattered or if it would hurt anything. I'm sure this is the least of my worries on my build but I like the little trick things to stand out and function and have reason. I dont see the steam crossovers doing much to # 7 myself either unless the engine is tuned to the edge and that being the hottest cylinder it ges first.Thanks.
Thread Starter
Staging Lane
Joined: Mar 2006
Posts: 58
Likes: 0
From: Blue Springs, MO
Originally Posted by Stang's Bane
You can order some really cool blockoffs from Wegner. I did,a nd then I ordered the hose and AN fittings from summit. Should be really trick looking..
Them look cool enough! I was gonnna drill and tap the head directly but wasnt sure if the there would be clearance to the head bolt/stud access or not. 
Originally Posted by 98Camarod
Then that is garbage. They wouldn't have blocked them off if there was anything wrong with it. I believe that the steam will travel to the highest point and then go to the radiator which is even higher.
Andrew
Originally Posted by daryl2cb@yahoo.com
If the rears are capped off, and the front is still joined together you should not have an issue. this is the way that all ls6's came from the factory, as well as 01-02 f-bodies equiped with a ls6 manifold. If you see a number of number 7 going out, look at the situations. No2, fI, high mileage, beat to ****, or generally worked on by someone who should not work on a car, or other factors. Now do not get me wrong here, things happen, but if proper coolant manitaince is done and motor is maintaned, things usually just do not happen out of the blue. Cap them of and put your time and money elsewhere, IMO
