Sorry Dan. Forgot the IL in front of Legal.

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

Seattle,

Since you asked about price, In terms of legal tender, in Raleigh NC about $300 USD will get you a non stainless custom fabricated, tuned exhaust system matched to Dutra Duals. After getting that quote I went for stainless for moe $$. Check some old posts on this topic. Lou gave me some basic rules of thumb from his experiences and those of Cameron Tilley. Since you can spend more than $300 at Midas, etc, once you start buying their $12 hangars, I paid $500 for a work of art in stainless steel with a stainless muffler and thought it was a fine price. Custom cut, custom collector, tuned and sounds might close to a big block V8. So nice I didn't have to add curb ticklers.

rock
'64d100

Seattle07, Dan hit the nail on the head when he said read the advice here carefully,that aplies to the cat and emissions testing as well as where things are or maybe usta be. All my vans(3) had or have air pumps,one came without(past owner removed),one I removed,and one still going round and round. The 83 sl6 has a factory block off plate on head and was only plumbed into exhaust pipe not the cat.The 80 sl6 was plumbed into the head as well as the exhaust again not the cat. The 79 is a 360 and it's plumbed into the exhaust manifolds on both sides and thats it,never had a cat,it's a 1ton. Heck if it's a legal problem get a collector license plate and forget the emission crud Remember it's only illegal if you get caught

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83 B-150 slant 6,4 speed. 79 B-300 360 pathfinder 4x4. 74 W-300 318 4x4 git-r-done 80 B-100 sl6,4speed

Also remember we all have to breathe what your car puts out. It benefits us all when we each make an effort to see to it our cars are as clean as possible. Remember how easily the old-car hobby as a whole can get used as a scapegoat for poor air quality, even though there aren't enough old cars left on the road to make a significant impact. Every time you're out driving your old car, you're the face of the continued existence of old cars. Give the guy behind you a headache, make his eyes water or his nose hurt, and he's going to be much more sympathetic to the periodic demands to sweep all old cars off the road, buy 'em up and crush 'em, etc.

A little responsibility goes a lot farther than it might seem on first thought.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

[quote="Rug_Trucker"] It was completely empty!! I never knew they would do that![quote]

I had an 87 Chevette that failed emissions. If you spend over $150 for emissions parts you would get a waver. I replaced the EGR and cat, it failed the second test but I still got my waver. The cat I took off was completely empty also. It turns out the timing just needed to be retarded 4* to pass when I got it inspected the following year at a much better shop.

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A friend that has his own mechanic shop told me emissions devices on the older cars are for lazy people that won't keep their cars in a decent state of tune.

I would love to test my van and see what it tests at. He doesn't have a tail pipe sniffer.

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'72 Duster 198 stock cam, 3:23's Hookers on jack stands for 8 years in the driveway
'79 Maxivan 360 Offy Qjet Comp RV cam/rusting in the driveway.
93 D350 160HP Cummins Auto Dually Clubcab needs a injector pump
2005 Golden Couch Buick

That's not so. A car in tune with properly-functioning emission control devices generally emits cleaner exhaust than a car in tune without. The "gotchya" is "properly functioning". Some emission control devices are poorly designed such that they never function properly. But no, as far as veracity goes, this what your friend told you is along the lines of "I don't wear my seat belt because in a crash I want to be thrown clear of the car".

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

That is what I call a good unbiased response.
I guess I'm blessed to live in Tenn./in the country. People around here love old rides, and I've never had anyone complain to me.(Even when I was crusing around in a '71 Che%Y C-10...glasspacks and all.) It's not unusual to see cops stopping to look, at an old car that wouldn't be caught on the road in CA. Don't read wrong, I agree "100%" with what SSDan says. Quite a few people around are farmers, so we all strive for the betterment/preservation of our natural rescources. But those same people understand how little our classic cars affect the big picture. Driving a restored car is an achievment for me, and I'm proud to live in a community that generally feels the same way.
That being said, if your car is still liable to be under emmission restrictions, It should not be made inopperable, and should be repaired if it's not in working order. If it's old enough to be exempt, I say you'd do more good in your town by putting that cash on disc brakes/new tires on your car.

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225 Cubic Inches of Iron-Head American Muscle

225 bored .040 /.100 off block, Schneider Cam 224@.050~ .480 lift - Stock valves, blended bowls, Offenhauser intake with 500 Edelbrock carb

Forgive me Father Dan,for I have sinned I think this topic could well end up in the social forum. Seriously I'm old enuf where gas should have lead in it(now that was bad for thee and me) and the 10cent a gallon stuff had better octane than the crap they sell today as regular. Our premium in those days was 100oct not 87 proof from all the additives like moon shine they use today. I am concerned for the guy behind me cause why does he need to go faster then the posted speed limit and need a shot of nitrous to pass me? And that's good for the enviroment Now I understand that putting extra air in the exhaust "helps" burn the excess bad nasties in the tailpipe,but wouldn't better engine design and tuning do the same thing Sorry, I digress,seattle07 if you want an air pump with sl6 bracket let me know,it's free to you

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83 B-150 slant 6,4 speed. 79 B-300 360 pathfinder 4x4. 74 W-300 318 4x4 git-r-done 80 B-100 sl6,4speed

Remember, prior to 1972, gasoline sold in the US was rated on the RON octane scale -- that's the scale still used today outside North America. For any given level of knock-resistance, the RON scale gives higher numbers than the R+M/2 scale used in America today. So yes, the regular, mid-test, and high-test numbers are lower today than you remember, but that doesn't necessarily mean the gasoline you remember had better antiknock performance.
That's not quite how it works, but close enough for this discussion...
Nope. A well-tuned engine without secondary air injection has dirtier exhaust than a well-tuned engine with secondary air injection, which in turn has dirtier exhaust than a well-tuned engine with secondary air injection and a catalytic converter.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I think we could go on and on here and just be whippin a dead horse.A well tuned and correctly built motor with out a cat just with air pump gets nothing from a mixture of air except a dulition of what is still there,right? It wouldn't be really helping the enviroment as the polutants are still there just watered(aired)down Nuf said,too much lead in my body,gets me all confused somedays

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83 B-150 slant 6,4 speed. 79 B-300 360 pathfinder 4x4. 74 W-300 318 4x4 git-r-done 80 B-100 sl6,4speed

Nope. Secondary air injection actually burns unburned hydrocarbons and oxidises CO in the exhaust of even a well-tuned engine.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I know it heats up like a blowtorch....especially if you engine is running lean.

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225 Cubic Inches of Iron-Head American Muscle

225 bored .040 /.100 off block, Schneider Cam 224@.050~ .480 lift - Stock valves, blended bowls, Offenhauser intake with 500 Edelbrock carb