I have an automatic 92 Camaro RS that I'm swapping in a 350 HO TBI. As of now, my engine shifts at 3000 RPM's(weak) and if I punch it, it goes up to 3500 RPMs(still weak). When I get the 350 HO, will it still shift this low? Just wondering.

JPrevost, I went on your website and saw that you were complaining about the vortec heads not having EGR. Now, I have to have EGR with this engine, and I found an intake for vortec heads that is EGR Equipped. Will this work so I can pass emissions?(Air care Colorado is GREAT!!) I have a catalytic converter, I have the smog pump or whatever it is, and all that is left is the EGR. I need it. Also, I have the stock tranny on the car. If I don't drive like a maniac ALL the time(hehe), can I get by without having to buy a new one? I've heard the automatic is good to 400 HP,and I'd still be below that. And finally, would the engine work with the 2.73 gears and the stock chip(until I get some money damnit... I have to get this swap done... I hate Mustangs, all of them)Cuz if I can do the swap now, and get the chip and gears after I win the lottery, I'd be sound as a pound.
Thanks man(sorry so long)
Dave Heinrich
1992 Camaro RS
::Engine swaps are the most confusing thing EVER::::

 

Dave, I know I've contributed to the EGR confusion, so allow me to spread some more from recent findings:

The ZZ4 conversion uses a tube from the back of the passenger exhaust manifold up to what used to be the hot air choke stove in the intake manifold cross-over passage. Since both the stove and EGR valve are using exhaust gases in engines with the passages in the heads, they are simply using that boss as the source for the EGR gases in the intake.

So, route a tube from the exhaust manifold/header up to the intake at that passage, and your EGR will work. That is, IF that second boss is on the Vortec intake (I have no idea - Burt Chevy had what they called a Vortec manifold w/EGR mount, but I don't recall if that second boss was there). I have a ZZ3 manifold that I can show you if you'd like an better idea what I'm talking about.

I have no idea what Air Care Colorado will think of all this.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/LB9 block, ZZ3 cam and intake, TBD heads, Hooker headers & y-pipe, 3" Catco cat).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.

 

A picture of the bottom end of the tube on this link:

http://www.superchevy-web.com/tech_02.shtml

 

Right, I saw that intake for the vortec heads and it has EGR. I saw it as the first one on paceparts.com in the intake manifold section. It says that it is EGR equipped, so wouldn't that be all I need? I hate Colorado...

 

That process looks real confusing. My uncle is going to install this engine for me, and he lives in Texas, so I gotta drive down there so he will do it. As far as I know, Texas is MUCH more lenient than Colorado emissions wise, but I don't see what else I need besides the intake manifold with the EGR equipment on it. I've still got the rest of the emissions crap from the 305, I don't know why they didn't make this a little easier for me to do 8-).

 

The air pump stuff is simple. It just injects air into the exhaust manifolds and cat converter. It looks complicated but it isn't. The EGR is simple too. I also need EGR or some way to heat up the intake so the charge is less dense. If I do that with some emissions methods I shouldn't have any problem with the instpection. What I plan on doing is having coolant running through the center passage on the intake manifold. This should do a good enough job. I just need to figure out how to setup the flow and hoses. Like the zz4 conversion said...the engine is legal even without EGR. So should the 350ho. DON'T go to a state inspection if they look under the hood. Go pay a money for a private garage to do the inspection and tell them what you have and what you've done to help lower emissions. If you're close and showed effort they will usually pass you, give them a under the table hand shake with a green bill and they'll remember you next year. The biggest factor is going to be getting the engine running right. Tuning with fuel pressure (easy with holley 670 unit) and distrib timing, good wires, maybe even an MSD 6a ignition box (multiple sparks = better emissions). If the car runs rich you'll fail. There are a lot of tricks to lowering emissions and most of the work well together. If I were you I wouldn't worry so much about the EGR. I know that sounds stupid but I sounded just like you a few months back. I was so scared that the engine would fail emissions, it took me a couple of months of research to figure out what I'd need to do. Does this answer all your questions and if you have any problems or questions let me know.
I'm slowely working on the tech article, I have a page done, I don't want to make it too long.

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, Jon (350 TBI!)
91 Red RS w/grey int, sq stereo (Alpine v12, kicker solo, MB quart premium etc)

• Holley 670 TB unit w/ 1/2" spacer/adapter
• Edelbrock RPM vortec intake
• 350ho 330hp vortec crate motor
• 8" harm. balancer
• Stewart stage 2 water pump w/160 thermo
• SLP tri-y headers to full 3"
• Rebuilt trans w/ SLP shift kit
• Centerline 16x8's all around
• 36/24 mm sway bars
• Full poly bushings, even motor mounts
• SLP LCA and panhard
• Alston SFCs
• Edelbrock 3 point STB
• Global west steering brace aka wonderbar
• Eibach pro kit springs
• Bilstien high perf. struts and shocks
• All this and I still have AC

My websiteAny questions?

 

Oh yeah, almost forgot the main reason for this post. I haven't run the car above 3500rpm yet because I'm still running with break in oil. I'm going to change the oil this weekend then the car will be all broken in. I did run it to 4300 when at idle and the engine should be redline at 5400, that is where torque and hp are at there highest. I have the RPM intake and 670cfm holley TB so I don't know if that makes for much of a difference or not but it might. You'll find out soon when I get a chance to take it to the track.

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, Jon (350 TBI!)
91 Red RS w/grey int, sq stereo (Alpine v12, kicker solo, MB quart premium etc)

• Holley 670 TB unit w/ 1/2" spacer/adapter
• Edelbrock RPM vortec intake
• 350ho 330hp vortec crate motor
• 8" harm. balancer
• Stewart stage 2 water pump w/160 thermo
• SLP tri-y headers to full 3"
• Rebuilt trans w/ SLP shift kit
• Centerline 16x8's all around
• 36/24 mm sway bars
• Full poly bushings, even motor mounts
• SLP LCA and panhard
• Alston SFCs
• Edelbrock 3 point STB
• Global west steering brace aka wonderbar
• Eibach pro kit springs
• Bilstien high perf. struts and shocks
• All this and I still have AC

My websiteAny questions?

 

Jon, the purpose of the EGR is to cool the combustion temperature to surpress the formation of nitrous oxides (NOX)compounds. It only functions under certain engine load conditions. I've never heard of using water in the center passage (is that a TBI thing?), but the carb crossover is intended to warm the intake until the engine is up to operating temp to keep the fuel evaporated.

The EGR IS required for the ZZ4 conversion kit - they used the aforementioned tube to bring it up to the crossover passage.

Also, there is no other choice for emissions testing for '82-newer cars in areas requiring testing in Colorado. The dyno test will detect NOX problems, so just do it right. That under-the-table talk is beneath this board (IMHO).


Dave, if the pictures on the Pace site are correct, I don't know how they do it on that Vortec manifold. The picture of the ZZ manifold looks like the piece I have.

As for why they make it so hard, that's the idea.

[This message has been edited by five7kid (edited April 03, 2001).]

[This message has been edited by five7kid (edited April 03, 2001).]

 

ok, thanks a lot guys. I will do it right with the EGR and everything. I'll just get that vortec intake for now with the EGR and call it a day. I don't have to do emissions for another year and a half, so if I fail then, I can shell out the cash to have it fixed(wont be a big deal) I don't think I'll fail, but just in case, you know? I know absolutely jack about engines(know enough to make it run, but that's it) so all this talk about regulating fuel ratios and crap is going over my head, so I'll let my uncle worry about that. I'm doing this swap to learn, and I know I will. I'm just gonna buy everything I said earlier and call it a day.

P.S. So can I get my tranny to shift after 3000 rpms if I get this new engine w/o buying a new chip? and what about the transmission thing?

Thanks guys
Dave

 

Sounds like some thing is wrong with your transmision. My 305 TBI shifts at 4700 rpm.

My 77 Camaro, 305 2bbl, (LG3!) shifted at 3500 rpm- thats diesle territory.

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88 TBI IROC- mods- 5500 rpm redline tach, 240 KM/H speedo,
L69 air cleaner (installed someday

 

What the hell is wrong with it? Do you think it's a part of the computer chip? I'll bet the guy who had it before me was treaking with it or something... That pisses me off.