Can i run full length headers with the smoog hookup and pass the visual inspection?

Asked by Sep 18, 2015 at 03:05 AM about the 1987 Chevrolet Corvette

Question type: Car Customization

I want to install full length headers but I'm told by some they won't pass emission. They have the exact same lines as my stock setup I'm new to trying to get around emmission testing. My corvette is 1987. How much cam seems to be exceptable before i'm in trouble also. I would like to run about 220 @ .050 if possible. any advice would help.

4 Answers

65,535

I believe if you register your car as a historic vehicle, since it is 28 yrs. old, you can get away from emissions. But that year car I don't know why it wouldn't pass putting headers on it, as long as what-ever smog devices on the motor are in working order, (air pump). Now is that 220 lift your talking about? My stock cam in my 1995 truck is bigger (like 334 lift) In selecting a cam the best thing to do is talk to the experts, Com Cams for one. You realize, you would need to replace lifters, push-rods & rocker-arms to do it wright. In doing this you will defiantly will be messing with the emissions that stock pollution devices probably would not keep up with. A lot of factors living in a state that checks emissions. Just adding headers should be no problem.

65,535

As far as just the headers, duels or what ever, get new cats also, these cars won't pass emissions without them.

65,535

That's Comp Cams...

13,095

A good header shop like Hooker, or Doug Headers know what is necessary to get around the smog rules of the state you live in. Some state they are 49 state legal, meaning not for sale in California. Others state 50 state legal, for any state of the nation. Call the manufacture customer service themselves. Some shops will sell you the product, telling you it will pass, and will not give you the money back or take the product back once it is on if it fails inspection. Homework my son, homework. Headers are on a lot of vehicles here in California, and are smog legal.

Your Answer

Add photo

Related Questions

  • 99 c5, take out cat converter or hollow it out.... helpful or harmful????? 4 answers

    1999 Chevrolet Corvette Coupe

    -

    Car Customization

  • what & where is the Barometric pressure censor on a 85 Corvette 6 answers

    I have a code 32 showing up, Ive replaced EGR valve egr solenoid also & erase code but I cant pass smog to much Nox all other tests pass. Dont have alot of money so I dont know if I should replace the...

    1985 Chevrolet Corvette Coupe

    -

    General

  • 1985 corvette 7 answers

    Can a person take off the smog pump and cat converter? Thanks. Jim martha_mccormick@yahoo.com

    1985 Chevrolet Corvette

    -

    Maintenance & Repair

  • Horn 6 answers

    The horn stopped working on my 1989 corvette. I have to get the vehicle state inspected. Until I can diagnose the problem i was going to temp install a horn button under the dash. I don't want to c...

    1989 Chevrolet Corvette Coupe

    -

    Maintenance & Repair

  • 2008 Impala LS Homemade Dual Exhaust? 40 answers

    So I was thinking about rigging up my own dual exhaust. Just cutting off the exhaust where the headers meet and then using a Y pipe to break the exhaust off to each side with a muffler on each side. ...

    2008 Chevrolet Impala LS

    -

    Car Customization

Corvette

Looking for a Used Corvette in your area?

CarGurus has 20,382 nationwide Corvette listings starting at $3,495.

ZIP:

Search Chevrolet Corvette Questions

Chevrolet Corvette Experts

#1 John Carson
John Carson
Reputation 2,190
#2 carGrrl
carGrrl
Reputation 1,370
#3 Vincent Parker
Vincent Parker
Reputation 1,260
View All

Related Models For Sale

Used Chevrolet Camaro
146 Great Deals out of 32,809 listings starting at $1,995
Used Ford Mustang
371 Great Deals out of 46,946 listings starting at $1,999
Used Dodge Charger
284 Great Deals out of 27,024 listings starting at $2,250
Used Porsche 911
84 Great Deals out of 4,575 listings starting at $11,992
Used BMW M3
35 Great Deals out of 1,714 listings starting at $4,544
Used Ford F-150
2,234 Great Deals out of 208,521 listings starting at $1,499
Used Mercedes-Benz SL-Class
45 Great Deals out of 2,990 listings starting at $2,900
Used BMW 3 Series
965 Great Deals out of 33,255 listings starting at $1,000

Used Cars For Sale

2017 Chevrolet Corvette For Sale
4 Great Deals out of 10,291 listings starting at $44,715
2016 Chevrolet Corvette For Sale
10 Great Deals out of 1,553 listings starting at $42,602
2015 Chevrolet Corvette For Sale
7 Great Deals out of 676 listings starting at $40,995
2014 Chevrolet Corvette For Sale
836 listings starting at $36,991
2013 Chevrolet Corvette For Sale
9 Great Deals out of 385 listings starting at $25,899