360 with 340 cam emission?

[76Charger]

i have read a couple thread's on this topic and some people say that lil red express truck had a 340 cam but the later ones didnt because of emissions. so i was wondering whats the verdict on this?The reason is i built a 76 360 with a 340 cam in it and in california i have emissions to pass so i needed to know.

[dwc43]

The 340 cam is not that big at aqll and should not cause a problem. I'd work on compression and carb set up.

[SB Racer]

I remember reading that all 4 barrel 360's to have this "340" cam, meaning lift 430"/444" and 268/276 degrees. 2 barrels had 410/410 252/252 instead. Only 340 4 barrel 68 man trans had a bit more, 444/453 276/284 so i don't even that will ruin your emissions compared to the milder ones if you were originally 4-barrell.

[rumblefish360]

Ealry 360's had the 340 cam. When it stopped, I'm not sure. Theres also state to stae differences in emmisions. Cali has the tuffest, earliest.
My '79 is exempt from the testing.
Since your in Cali. , a great power adder is a super charger. Just thinking out loud, never mind.
Check the books on proper cam for your year car.

[John Kunkel]

The production E58 360 (HP/Police) had the 340 cam and they pass smog with no problem.

Problem is they had carbs/ignition calibrated for that cam (and cats) so there's no guarantee that every 360 with that cam will smog.

[usdart]

Originally Posted by rumblefish360

Ealry 360's had the 340 cam. When it stopped, I'm not sure. Theres also state to stae differences in emmisions. Cali has the tuffest, earliest.
My '79 is exempt from the testing.
Since your in Cali. , a great power adder is a super charger. Just thinking out loud, never mind.
Check the books on proper cam for your year car.

Sorry rumblefish but, Nevada is the 'tuffest'. Cars built after 1967 must be smogged here even though we are in the same EPA district as Calif. Or KALYFORNIA, as it is known now by the Governator.

My 360 cam is more aggresive than the 340 and it passes here.

[rumblefish360]

No kiddin. Sooooo a 67+ car must have there equipment?

[TK]

Just a lil piece of info, a lil red, sold in Cali, still had the 340 cam.

[rumblefish360]

The second lil' part to the info given above.

Trucks were under a different standard. They were also missing cats they didn't need to have to pass the passenger car levels.

[TK]

My info says 1/2 ton trucks fall under passenger car emissions.

[rumblefish360]

Truck is truck.
Car is car.
Back then, I don't know off any other of todays type cross over rides. You know the ones that start to blurr the lines between car and truck. I think the closest as a ElCamino/Ranchero.

Reguardless, double check your states rules , reg's and laws and cross it with Chryslers papers on what your car was equiped with to be sure.

Do not let the above info be a rock soild base to argue with. We all mean well and believe were correct, just double check us. Can't hurt if you do, just might if you don't.
The lil'red trucks around my way have no cats. So the above post is incorrect as far as New York Lil'Red trucks go and what there owners say. Also what I read, but, thats worth checking too.

[TK]

[TK]

Little red curb was around 4050, so, rumble was right, not the same.
Probably how they got away with it.

[TK]

Originally Posted by 76Charger

i have read a couple thread's on this topic and some people say that lil red express truck had a 340 cam but the later ones didnt because of emissions. so i was wondering whats the verdict on this?The reason is i built a 76 360 with a 340 cam in it and in california i have emissions to pass so i needed to know.

The 340 cam runs smooth enough, I would say if you retard the timing a couple degree's, you should be OK, as long as everything else is in tune.

[rumblefish360]

Humm, interesting page posted. I wonder what the heck they mean by equivalent inertia weight? Prehaps thats the weight of the veihical er ($%^**(&^%&(SP!)
E-hem. Anyway, I see 4 wheel drive gets a break, not much.
Whats med. duty? +1500 series?
I'm not to sure on the Lil'Reds weight, but weren't they kind of heavy for a small truck?
Wish I had one off them old time machines for testing. Lord knows I can't afford one of those shop rolling dyno testers for my garage!

[TK]

Equivelent inertia blah blah, is a fancy way to say "curb" weight, from what I gather. (why engineer's should not take english classes)

I have two books, one says a little red curbs at 4023, and another says 4053.
Yeah, I guess it depends on what interior package.............

More interesting, any Emissions test info, from any other state seemingly, other than Cali, seems to break it into passenger cars, and then GVW.
The Alaska one I have goes back to 84, and passenger cars, and trucks up to 6599lbs gvw are in the same.
WHo knows!?

Any tips for cheating emissions tests?

[jimbo7074]

Well to give you some #'s which might help, I had a 360 with a cam of 214/224 duration @50 442/465 lift, 340x heads, weiand stealth intake, 1 5/8 headers 2 1/2in exhaust and about 8.5-1 compression. I ran through the emissions test with a quadrajet( only for the test!) HC was 93 ppm at idle, 86ppm at cruise, 2.97 co at idle and .76 at cruise. Timing was 10btdc and I only had a pcv valve for emissions control. This is in B.C. and they tend to be pretty strict with muscle cars. Hope this helps.

[76Charger]

to be safe should i just use a stock 360 cam i upped the compression in the motor anyway i was just looking for more performance, btw they check the timing to to make sure its where its supposed to be.

[usdart]

Originally Posted by rumblefish360

No kiddin. Sooooo a 67+ car must have there equipment?

They must pass Smog, don't know how they check for equipment. I know they look at your mufflers,Gas cap etc. Then hook up to the dreaded "smog" machine.
Every year I retard my timing and lean out the Carb til it runs like crap, then it passes.

[76Charger]

in cali they check for cats, the timing, gas cap check,egr valve, look for smog pump all line connected even the hose from the valve cover to the air cleaner. it all has to be there if not u automatically fail.

[rumblefish360]

Is there an age where it will be exempt from all of this smog equipment check?
In N.Y. City and serounding metro areas (This includes Long Island) older than 25 years of age is exempt from smog checks. It becomes a saftey only issue.

[TK]

It looks like the cali laws go, if it was a smog car (starting in 67 in cali) it has to have the original smog crap, and pass the smog sniffer test.

76charger, I would say, because of the mild duration, and timing of the 340 cam, it should pass as well, if not better that the stock 252/252 360 cam.
It sure is not going to make the difference between pass and not pass.

[76Charger]

ok thanks and btw in cali cars built before 1975 are exempt from the testing so i missed it by a year

[rumblefish360]

Will your car enter that bracket next year?

[76Charger]

the law use-to be 30years or older then the chaged it to anything after 1975 had to be smogged

[rumblefish360]

Bastards!!!!!!!!!!!!!