VORTEC heads?
- Thread starter sandSStorm
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turbodig
Active member
Re: VORTEC heads?
Except the old LB4 heads have the same swirl ramp, just not as pronounced as the L35.
The later "vortec" heads don't use this ramp.
What Justin posted was accurate, at least within the terminology that's common around here. The 'vortec' name was used inconsistently within GM.
This post sorts it out rather well:
http://www.syty.net/forums/showthread.php?t=20725
Except the old LB4 heads have the same swirl ramp, just not as pronounced as the L35.
The later "vortec" heads don't use this ramp.
What Justin posted was accurate, at least within the terminology that's common around here. The 'vortec' name was used inconsistently within GM.
This post sorts it out rather well:
http://www.syty.net/forums/showthread.php?t=20725
cloneman315
Active member
Re: VORTEC heads?
i also have 98s and no egr
i also have 98s and no egr
csx turbo
"Me, sarcastic? NEVER..."
Re: VORTEC heads?
I'm not defending Pocahontas by any means, but I know that a lot of cars came equipped differently if they were sold in the California market. Maybe Pocahontas is only knowledgeable about what may have been sold for the California market; it was only a drill and tap away, right?? I really don’t know, so let us know if this is true…
I'm not defending Pocahontas by any means, but I know that a lot of cars came equipped differently if they were sold in the California market. Maybe Pocahontas is only knowledgeable about what may have been sold for the California market; it was only a drill and tap away, right?? I really don’t know, so let us know if this is true…
SY2455
70's Veteran
Re: VORTEC heads?
1. Anyone that knows care to answer this ?
2. Would this work and if not why not ?
TIA
1. Anyone that knows care to answer this ?
2. Would this work and if not why not ?
TIA
SikVSix
New member
Re: VORTEC heads?
I'd rather look at the head to say for 100% but I'd say you'll just be drilling into the water jacket. I'm pretty sure there is no part of the passage in the head except for that little indentation. It would make no sense for GM to cast the rest of the port needed to make this an option.
I'd rather look at the head to say for 100% but I'd say you'll just be drilling into the water jacket. I'm pretty sure there is no part of the passage in the head except for that little indentation. It would make no sense for GM to cast the rest of the port needed to make this an option.
SikVSix
New member
Re: VORTEC heads?
if you did a modified vortec intake set up (not sure if thats possible) you could pipe an egr off the header like they did on the vortecs but that would be a lot of work if it would even work.
Can you just leave it hooked up and have the port plugged? would emissions know the difference if it was actually doing anything?
if you did a modified vortec intake set up (not sure if thats possible) you could pipe an egr off the header like they did on the vortecs but that would be a lot of work if it would even work.
Can you just leave it hooked up and have the port plugged? would emissions know the difference if it was actually doing anything?
SY2455
70's Veteran
Re: VORTEC heads?
I have thought about doing it this way, but if they test for egr operation the truck would fail because it wouldn't stall :tdown:.
I have thought about doing it this way, but if they test for egr operation the truck would fail because it wouldn't stall :tdown:.
TYTILIDIE
METH HEAD
Re: VORTEC heads?
If they went that far I'd move to another state:lol: Sounds like some nazi shit.
If they went that far I'd move to another state:lol: Sounds like some nazi shit.
SY2455
70's Veteran
Re: VORTEC heads?
I plan on moving. I just have to wait a few more years. My wife and I are looking in a couple of areas right now with Colorado being one of them. Looking for 5 to 25 acres out in the country maybe 45min to 1hour from a city that has everything one would need.
I plan on moving. I just have to wait a few more years. My wife and I are looking in a couple of areas right now with Colorado being one of them. Looking for 5 to 25 acres out in the country maybe 45min to 1hour from a city that has everything one would need.
TYTILIDIE
METH HEAD
Re: VORTEC heads?
What kind of country? People love it out in Peyton, about 5-10 miles from town. You can get some nasty sprawls out there cheap. Only thing is, it is all brush, not sure what kind of land you are looking for. Any kind of mountain scape and you are going to pay big bucks. We dont really seem to have many wooded areas unless you are in the mountains. I hear you can acquire property in Woodland park semi cheap but never really looked in to it.
What kind of country? People love it out in Peyton, about 5-10 miles from town. You can get some nasty sprawls out there cheap. Only thing is, it is all brush, not sure what kind of land you are looking for. Any kind of mountain scape and you are going to pay big bucks. We dont really seem to have many wooded areas unless you are in the mountains. I hear you can acquire property in Woodland park semi cheap but never really looked in to it.
turbodig
Active member
4C FED
Absolutum Dominium
AppleTY
Donating Member
atomicmecha
I hate rust
Re: VORTEC heads?
Thinking he meant open it back into the upper intake. So when they force it open it just opens a loop from the throttle body to the intake and basically does nothing. So it'll move, and look like its doing something but its just circulating intake air to the intake air. I know opening it to the outside would just cause a massive vac leak and that'll stall the engine out. And plugging it against the head will make it draw a vacuum when open which will shut again making it seem like it stuck closed.
Mind you, this is just an educated guess. Someone correct/confirm/add to my guess.
Thinking he meant open it back into the upper intake. So when they force it open it just opens a loop from the throttle body to the intake and basically does nothing. So it'll move, and look like its doing something but its just circulating intake air to the intake air. I know opening it to the outside would just cause a massive vac leak and that'll stall the engine out. And plugging it against the head will make it draw a vacuum when open which will shut again making it seem like it stuck closed.
Mind you, this is just an educated guess. Someone correct/confirm/add to my guess.
atomicmecha
I hate rust
Re: VORTEC heads?
if you vent the egr path to atmosphere it will be a massive vacuum leak and that will cause a stumble and most likely stall it.
if you vent the egr path to atmosphere it will be a massive vacuum leak and that will cause a stumble and most likely stall it.
AppleTY
Donating Member
Re: VORTEC heads?
I can just imagine the look on the guy's face when he squeezes the mitivac and the suction whistles as my engine stumbles!
LOL
I can just imagine the look on the guy's face when he squeezes the mitivac and the suction whistles as my engine stumbles!
LOL
AppleTY
Donating Member
Re: VORTEC heads?
I just have this urge to go buy a vortec head from the junkyard and have it cut into sections right where that dimple is that should be the egr passageway! Maybe an exhaust passage is just a few inches below the surface!
Maybe I could build a fake egr valve with a sensor that would send a signal to retard timing!
Maybe I should move to another state.
I just have this urge to go buy a vortec head from the junkyard and have it cut into sections right where that dimple is that should be the egr passageway! Maybe an exhaust passage is just a few inches below the surface!
Maybe I could build a fake egr valve with a sensor that would send a signal to retard timing!
Maybe I should move to another state.