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408 "ls-6" With Direct Port Nitrous


Krambo

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Thanks guys, its taking alot longer to finish due to my time constraints to work on the pig and all the little crap that keeps rearing its head. So far so good though and it is looking the way I intended. Can't wait to fire it up!

 

thanks much!!!!!

I just got my pump and when i get my rockers and efans i can finally start my project.

 

Thanks again for the help

 

Brad, one more thing is the power wire that goes into the pump body is really in a bad spot for abrasion. I took an ADEL clamp and removed my driver's side front oil pan bolt and threaded the clamp through that bolt. I took the loomed wire and pulled her tight against the front of the block and pinched it tight through the small ADEL clamp. If you do not do this, you run the risk of the WP pulley catching the wire and ripping it to shreads. You'll see what i am talking about once you have the pump in your hands.

 

 

With as many hits as this topic is getting, I think it's important to point out that the stock charging is a fusible link. I don't think many people still know what those are, lol. It is important that the charging wire be fused, so I'm glad to hear you're taking this approach Kevin. I will be moving up to 4 guage fusible link (8 guage is stock), and if I need to go bigger from there I will be taking the Maxi-Fuse route...

 

Yes sir, an important notation. :thumbs:

 

Is the trans back from FLT yet? Can't wait to see this bad boy in person....

 

Patience Dan! Good things come to those who wait. I'll keep ya informed...

 

As far as the baffle in the collector goes, you should be able to just pull that out.

 

I tried,...wiggled it with a pair of pliers, she is in there good. I will try it like this first and then go with custom collectors.

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i know i already complemented this but... i was looking at the pics again today, and wow.

 

i build at least 4 or 5 custom engines a month, some sleepers some wild... just built a 430+ cube LSX (cant remember exact size) with 12 lbs of boost, custom sheet metal intake, powdercoating everywhere... but this is very impressive. the attention to detail and the theme is very cool. way to go on a one-of-a-kind build :thumbs:

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  • 5 weeks later...

Quick update...I had a ton of great pictures however I am having a major issue with my one SD card. Anyway, here is an update on my build consisting of:

 

1. PCV / crankcase venting / oil control.

2. Intake finally officially mounted

3. Catch Can install

4. CAI home brew

 

First off, I received a ton of PM's and E-mails on how I was going to do a PCV and crankcase venting set-up so I figured I would detail this here. A correct and correctly engineered crankcase venting system will consist of 3 basic aspects:

 

1. Adequate venting of crankcase pressure. I think it is safe to say all motors have some form of blow-by and for the high rev'ing or boosted applications, this can be a big concern if not adequately vented.

2. A fresh air source to effectively flush / scavenge the crankcase of harmful gasses. Venting the crankcase is only half. Your motor will create a nasty mixture of gasses in your crankcase including water vapor, oil vapor, unburnt and burnt fuel vapor and acids which will cause damage to your internal engine components if allowed to condense back. A well designed system will have a fresh air source AND a vacuum source to effectively pull these gasses out of the system.

3. A method by which you can remove oil vapor from the crankcase. AKA a catch can! These should come as a factory installed option IMO. A good catch can will regulate the amount of air flowing through it, have some method of allowing the hot vapors to condense and separate and also a good design so that maximum condensing can be achieved.

 

So with that being said, here is what I did and why. I first did some research on catch cans and made my choice based on functionality, looks and finally price. It came down to the AMW piece or the CCA can. I ended up buying the CCA due to design and the way I was going to route my vac lines. I did have an exploded picture for you so that you can see all the internal parts however that is stuck in my corrupt SD card :mad: . I mounted the can on the passenger head.

 

IMG_1990.jpg

 

Everybody remembers that I installed the LS6 valley cover correct? Well this is why... I am going to pull crankcase pressure and gasses from the valley cover instead of the valve covers. The outlet of the LS6 Valley cover is connected to the TOP inlet of my catch can which travels through a cylinder containing mesh fiber inducing the condensation of the oil vapors. The large body of the catch can also aids in the condensation before traveling up and out the top side of the can into my vacuum source in the FAST intake. The LS6 Valley cover alone has properties that will help control the oil vapor (look back a few pages to the pictures).

 

O.K. now that I have the crankcase pressure taken care of I needed to satisify a fresh air source and plumb the lines to the crankcase. I wanted to have this fresh air source come in from the TOP of both valve covers, make its way down the push rod voids and finally "sucked up through" the LS6 valley cover. I felt that will give me the best overall "flush" of the motor. Now, for my set-up I will initially be using the MAF sensor which means I cannot just add "breathers" to the valve covers as the motor will "see" UNMETERED AIR and mess with my fuel trims. Yes, I know you can effectively "tune out" this intentional leak but I refuse to believe that it will be a consistant intentional leak. Solution I chose is to tap into the CAI tube after the MAF sensor split and route vacuum lines to the valve covers. Here is the bung I installed in the intake tube:

 

IMG_1989.jpg

 

This fresh air source will be effective at idle and part throttle only as when I go WOT, both the vacuum source for the catch can and the fresh air source will see relatively the same vacuum reading. I went one step further and enlarged the stock pinhole "PCV" to about double the size allowing better airflow through the top of the driver's side. Again, I had nice pictures of this. Here is just a finished pic of where the vacuum line will be run (pay no attention to how dirty and how the wiring is all over the place):

 

IMG_1987.jpg

 

Here is a good look at the vacuum lines split in various directions. I will dress all of the lines up with nice black hose clamps and such however I am getting anxious and the bank account is GONE!:

 

IMG_1986.jpg

 

A look with the CAI mocked up. I will be powdercoating the intake tubing black for less "bling" as well.

 

IMG_1985.jpg

 

Overall so far. I still need to officially bolt down the coil covers and finish up the wiring so pay no attention to the details ...YET. Anyway, the CAI is home brew and consists of a 4" 45* silicone coupler, a 90* 4" bend of aluminum with one 2 inch leg and one 3 inch leg, a 4 inch silicone coupler, a 45* 4" aluminum bend with 2 inch legs and a 4 inch leg and finally a 4 inch to 3.8 inch silicone reducer. I will one day make a trick intake, splitting the pipe right off the TB goinng to the lower grill. But that is a ways away for now...

 

IMG_1988.jpg

Edited by Krambo (see edit history)
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...Just need my tranny and converter and I am off tuning! I swear, if I had the tranny, I would be calling in sick to work and be under the truck. Soooooo close. :cheers:

 

i'd call in sick too just too come up and help you :P

Edited by Fireman31 (see edit history)
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Well kevin im off to the doctor and its your fault. Viagra at least gives a disclaimer on the bottle warning you to see a physician if you have long than a 4 hour erection. I think you should be more considerate and lable your thread with a simular disclaimer. Your build make me want to start over. i wish i had the know how and knowledge you possess. your truck is a one of a kind i love it

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Well kevin im off to the doctor and its your fault. Viagra at least gives a disclaimer on the bottle warning you to see a physician if you have long than a 4 hour erection. I think you should be more considerate and lable your thread with a simular disclaimer. Your build make me want to start over. i wish i had the know how and knowledge you possess. your truck is a one of a kind i love it

:crackup: hahaha agreed... its a work of art, honestly it belongs in a chevy museum

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hey Krambo thanks for all the details on the EWP. Install was easy with your guide lines. How much did you space it out 4 gaskets, .250 inch? I went with a .250 spacer and then 2 gaskets so it was .375 total and i wish i made the spacer .375 to get .5 of spacing. Check out the spacers they worked pretty good for the 10 minutes i've had my truck running.

 

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