MyklB

I live in California and need an exhaust system that will pass smog. Currently I have long tube headers on my 77 which is a no-no here. I'd like to find short tube AIR Headers and replace the entire system, with a catalytic converter (currently missing) all the way to the tail pipe. Any and all advice welcomed. Thanks

DucatiDon

McJacks shorty headers with smog fittings. You probably have to have a 2-1 exhaust too... buy the parts from a vendor, assemble it with a CC and then have a uffler shop weld it up

cv67

Make sure your cat is a "ca approved"one they will check for it
Magnaflow is reasonable. Way better than the original type and dont really cost any measureable power.

ddawson

Make sure the headers have a CARB number.

http://www.arb.ca.gov/msprog/aftermk...es/amquery.php

VCuomo

Any component in the smog system that's non-OEM must be CARB approved AND the component's CARB sticker must also be applied under the hood where it can be easily seen. And your smog system must, at a minimum, conform to the OEM's design and specifications. At least that's what I've been told.

Or sell your '77 and get a '75 or older (no smog inspections required). (j/k...)

76CSRvette

or you can move to el centro in so cal no smog required there

Snoopysvet

Just get a PO Box in Julian or El Centro, Goole DMV to see exempt zip codes

dugsgms74

Try Doug Thorley. Call them and ask if the thy-350-s have a CARB E.O.#, for some reason I think they may.

Shark Racer

Hedman 68301 is what I have on mine, they have AIR tubes. There's also the 66301 with AIR tubes that are legal.

If you have a federal car (no AIR) you can also run the 66307s (no tubes).

I'm sure there's a couple more.

I've been through smog for over a decade with the 68301s, they're legal and I never get hassled for them.

dochorsepower

Yeh, back in the good old days you could just take your registration to the speed shop with a $100 bill in the envelope and no problems.

MyklB

Definitely checking that out tomorrow, thanks

Lobzila

Check out Werners Mufflers in Oceanside CA. He can do the whole system for you and his prices are really reasonable.

Snoopysvet

Spend $5.00 buy this

http://www.ecklerscorvette.com/corve...eral-1978.html

Remove smog pump and AIR injection systems

MotorHead

What does the sticker say ? Can I use it on my '80 ? or does it have the date of the car in the literature ? Mines visual only check and only if you get pulled over and they want to hairass you

MyklB

For some reason, I cant get the page to load. I have their 2014 catalog, maybe I can find what you're suggesting

What am I looking for?

ddawson

It's the Corvette Emission Control Decal, L48, Federal, 1978 as it doesn't require a SMOG pump.

Snoopysvet

ddawson is right

When on Ecklers site search for

Corvette Emission Control Decal, L48, Federal, 1978

The smog man looks at the sticker because the VIN does not tell him if it was federal or Cali.

MyklB

Ordered the sticker, thanks much. Now I need to figure out how to maintain duel exhaust. I need mufflers anyway, wonder if I can run dual CAT's. Anyone had experience here?

Anyone know if I have to have a stock air cleaner to pass CA smog? Any experience? Also, want to thank everyone for the great info, hopefully I can get this 77 back on the road soon.

Shark Racer

Dual cats are not legal. You can pass smog with them, but the guy has to make a mistake to do it.

MyklB

So your headers go to a single cat, then back to duel? Do the duels feed through the cross member? Currently mine do