shrekmoose

My though on it is why would these motors pull much different then say a last gen 5.3. I wouldn't say the direct injection would have a whole lot of effect. They still have the same displacement. Did the last gen trucks have a vacuum pump for 4cyl mode or how did they get around it? I may be totally wrong but it still should be similar at the intake.

Haven't had time to test any of this yet. Anyone know what the booster requires to have good brakes or a ballpark? Haven't had time to test any of this yet. Anyone know what the booster requires to have good brakes or a ballpark?

Yea I plan to make me up a vacuum line and clamp it into the intake and see if I still have power brakes. Found an article in ls1 tech where guys are putting these motor in older camaros and stuff and using a purge valve on the intake to pull vacuum. While i prob won't be able to use that valve because my system still uses it that tells me there is eoungh vacuum made to run the brakes. Anyone know of another intake( lt1 or the like) that may have a vacuum port in it? Wouldn't mind swapping intakes to make it clean.

I'm still going to be running vacuum into the brake booster just from the intake instead of the pump.

That's a though I would just really like to get away from a vacuum pump all together. Like I said I'm running in v8 100% of the time now so I should make plenty of vacuum at the intake. The less I have in the engine bay the more room I'll have for whatever forces induction route I go with. Prob gonna be a procharger.

Also I plan on diving into this no matter what I'm just brainstorming while I don't have any time to work on it. Working 15 hour days 7 days a week right now.

The dealer not covering a motor isn't really the reason I'm doing it. It's the fact it's a weak link in the system that needs to be eliminated. I plan on doing extensive work to this motor and don't want a freakin vacuum pump if all things to take it out. Now back to the task at hand. The vacuum issue should be solved by my tuning and tuning out any code that would be thrown when it's unplugged shouldn't be an issue. My main question is where would y'all pull the vacuum from in the intake manifold for the brake booster?

To be completely honest I wasn't asking for some of the opinions I was asking if it had been done. Regardless if you think it's stupid or not wasn't the question. Now back to what I said previously. These engines do not make enough vacuum when in 4cyl mode mine has been tuned out. I'm in v8 all the time so should make plenty from them intake. I just haven't found a good place to pull the vacuum and was wondering if someone had already found somewhere.

http://www.gm-trucks.com/forums/topic/193570-2014-chevrolet-silverado-1500-engine-failure/?hl=vacuum+pumpthat's just the first one I pulled up. Dealership service department here in town has seen 3 in ad many months all around the 100-120k mile mark. Not saying it will but would rather spend the 35 bucks in materials to avoid a rebuild when I don't need the pump anymore anyway.

When that vacuum pump decides to die it shares engine oil with the motor and will take the motor with it.

Anyone deleted this vacuum pump yet? My afm has been tuned out so I should have enough vacuum for the power brakes. My question is where to hook the vacuum line into and what if anything will need to be tuned out. I know there is at least one electrical connection on the vacuum line so I'm assuming it's going to throw at least some kind of CEL if it's gone. Was thinking about T-ing into one of the pcv lines that go into the throttle body for vacuum.

To me it sounds like the new oil pump they are using. But as long as everyone else does it I'm ok I reckon. Now back to figuring out how to get rid of this vacuum pump.

10 4 I figured that would be the general consensus is it was normal truck seems to run very good so didnt think it was to big a problem. Guess ill have to put a blower on it and maybe that whine will drown out this whine!!

Bueler bueler am I the only one who's truck does this?

Anyone else have a 14 5.3 that constantly whines? Almost sounds like an alternator going bad or something but ive used a rubber tube trying to hear what the sound is coming from and there is no one place. You can hear it pretty well in the video and the motor was up to temp when it was recorded. the phone is sitting on the plastic radiator cover with the hood open.