I noticed that GM offeres a serpetine smog delete pulley and was wondering if this was actually used in the production camaro/ firebird cars from 88-92? If that's the case did they also offer exhaust manifolds without the AIR tube holes? I was at the pull-a-part yard last week and noticed a 89 TBI equipped chevy truck that actually has the smog delete pulley integrated into the serpentine bracket so this got me to thinking if some F-Body's actually came stock w/o smog like this truck did.

No, it was not used in production on any V8 thirdgen.

It may be possible that the Exported cars, say to Europe, or Canada may not have had the AIR Pump... With that said they would have had a slightly different Serpintine belt routing...

Of course it also may be that to eliminate the A.I.R. pump you remove pump and install new belt...

Of course I am not sure if some of the 1LE cars were so equipped W/O the smog pump.

Just some thoughts...

The belt manufacturers know that people modify the cars and remove options which require different length belts. They probably had so many requests for this belt in the past that they added it as an available item.

All the Player's race cars ... had the smog pumps ... even the 1LE cars.

As the race was all equal cars, having the fastest wasn't the requirement. There wasn't any other manufacturers to compete with.

Perhaps the SCCA classes in the USA had different rules?

Mark.

FWIW, I removed the smog pump on my car and was going to install a delete pulley, but...the stock serp belt still fits/works fine without a pulley there at all. No slips, squeals, etc.

your tensioner pulley is probably out of it's optimal range though and not providing as much tension as it should. It may become a problem as the belt wears and elongates to the point where the tensioner can't provide enough tension to prevent slipping.

One thing I don't understand, is that the AC delete and the smog delete pulleys are pretty much made the same way......but if you go to ebay and try to buy a smog delete pulley it's about $50 more than the AC pulley

why go to ebay to buy the smog pump delete pulley, when you just can buy a brand new one from gm or from modern day muscle? I just feel it safer to buy from the actual source...

laterz

TPI parts sells on ebay and I have been a repeat customer of thiers....that's who I would buy from, if I got it off ebay

You don't need a delete pulley at all, just a shorter belt.....
That's how I run mine without air, for some years now...!!

Trucks have different emissions requirements, so they didnt need an AIR pump to pass their less tough standards.

All thirdgens from 82-92 sold in the United States came with emissions-reducing devices including EGR, catalytic converter, AIR pump and lines, and a PCV valve. These items are REQUIRED by federal law to remain on all street vehicles, regardless of your state's emissions testing standards.

You ever hear of Supply & Demand?

Even if a supplier has the dies to make two parts, which are almost identical. The parts off of the die that makes less parts are worth more because they still have the investment into the original die. The actual part may not have any.

So when figuring the price of ANY part:
(Price of Die/est number of parts) + Cost of materials + Labor = Cost of part

So if you have two ( ALMOST ) identical parts and one they only expect to sell 1000 of "part A" and another they expect to sell 10,000 of "Part B":

Part A calculation
($10,000/1000) + $1 + $10 = $21.00 each part

Part B calculation
($10,000/10,000) + $1 +$10 = $12.00 each part

Understand?

John

Actually John I AM a college graduate with a business degree..and spent 12 years in manufacturing....

But it does seem like more people are pulling smog than AC, so more people will be buying more smog pullies....which in turn should lower the price on them before the AC versions because of longer quanity runs.

But if the makers know that the smog versions are more desirable then it DOES make perfect sense (to them) to jack the price up.

But thanks for taking the time to explain that to me

I have been searching this forum for direct detail to remove smog pump and un-neccesarries from under hood/ for turbo install. i had three firebirds without any of that crap( i live in pa). i just bought a 86 transam, now i am boggled to what i see! i didnt even know what it was till researched it. so yes look on the east coast for a transam and you will find one without.if you can help me out to find a detailed set of instructions on to remove the smog that would be great. sorry for the typing errors, thats the way i type

I guess no-one that replyed to this lives on the east coast? no smog pumps in pa. i bought this one out of state and it had one. it is not a cowinkydink they sell smog delete pulleys. they were manufactured for cars without the pumps that sell in states with less emissions ( like PA). when manufactured it is cheaper without smog. thats why in states not needed, they werent put in. its not rocket science, and theres a marketing lesson for you.

and if you need hard evidence call GM! i also have pics of my 92 formula w/o, 88GTA w/o,87 camaro RS w/o, and 91 Camaro RS w/o.(in order of ownership)but my OUT OF STATE BOUGHT 86 TPI TRANSAM HAS ONE! GO FIGURE!( i have these pics from my senior project from highschool, hahah )

Sure guy. Keep telling yourself that.

....and this is axseptable, um, acceptable to you?

strange enough the dual cat system did come with a crazy setup. the passenger side cat was a 3 stage and the other cat was a 2 stage.

go figure.

but i hever heard of a car sold in America had a cat delete option.

sorry - senior moment - i should have written air delete option. but the title is not air its smog delete.

thank you for pointing it out.

my example was ment to illistrate that gm did nutty things to get into smog compliance.
i have had 7 camaro's that i bought new and every one had the air system and no delete or bypass came with them. is that better?

This is an old thread about smog (A.I.R.) delete, not Catalyst delete.

MY Point Excactly!

OK, but on a serious note guys. im browsing to find clean cut directions on what and how to remove the smog without throwing codes! I WANT MY CATS. just not the smog. none of the f-bodys ive owned had one. i bought one from outts state and it had one. so i need room under the hood for some upgrades.Do i have to replace ECM? or can i reprogramwith DYNO? anyone have some input on this, anything is helpfull and im gratefull!


And for the first time , some reason the alternator is on the left side? what the hell- and a/c compressor is on the right side(battery side). Was there a certain package that they did this?

Just disconnect it and forget about it. If its an 86 with the original setup all you have to do is ditch the belt. The ECM has no feedback from the AIR system.

Any thirdgens with a V8 you had without AIR had it removed by someone at some point in time. The reason your stuff is on the other is its not a serpentine belt setup so the alternator is on the opposite side. When they went to serpentine, they swapped the sides of the AC and Alt.

madmax is correct. When they went to the serpentine belt setup, the alternator moved to the drivers side and the a/c and air pump moved to the passenger side. When I had an L98 with the serpentine belt setup, I removed the air pump and replaced the belt with a smaller one (no new pulley needed). I found the required belt size in a thread on this site.

I want to think there is a dummy pulley that you can buy to take the place of the AIR. and I know there is a dummy pulley for the AC.

John

There is, they used them on some truck applications. With a v belt setup, its not needed because the pump is driven by its own belt so all you have to do is take off that one belt.

thanks for pointing that out - made a correction in posting.

OK, so what about the wires and also the second air box. they can all be removed right?

The "second" box I suspect you're referring to is the diverter valve. You could remove the wires from the harness, but it would be easier to just put them aside somewhere. You'll need to block off or remove the tubes from the exhaust manifolds and plug the holes, and cap off the tube to the cat, or remove that (not easy) and cap off the line at the cat somehow. This whole process will net you about zero in power, mileage, and maybe .001 in the 1/4 from lost weight. The only good reason to remove it IMO is to make it easier to work on the car like changing plugs.

The vbelt on my iroc just mysteriously disappeared, Must have come off on the h way or something. I hope the G men aren't gonna send me to club fed or something...

I doubt they will ever know unless you live where they do emissions testing.. I know where I live they do not have inspections so I can pretty much do whatever, I do make my best effort to actually comply, I have a catalytic converter installed, I have the Evap, & charcoal system installed etc...

John