hey i was wondering how some of u guys get insurance
i want to get heads and cam but i need a car i can drive on the street
lots of people say go with a supercharger but i dont really want to
any advice would be great thanx

 

I'd say the cam is the bigger factor in emmisions, not heads. Go with a milder cam that isn't that radical and with proper tuning and running a cat you should pass.

Others might want to chime in here.

 

the biggest determening factor is the cam/valve job on the heads, compression will affect your NOX levels but I think thats about it, you should be fine as long as you do not go over say 225/235 on 112 on an LT1, even that would be a bit hard to make pass if you're the average person.

I'm thinking of passing with a 242/250 on a 109 LSA and huge lift, if I pass, well I better get bowed to LOL.

PS. I'll never pass.

 

Matt sent u a pm a while back, did you get it???

 

As said, compression will be the main issue for the heads, so if you stay near stock compression, you'll be easily ok there.

For the cam, again as matt ponted out, duration (and LSA) is the main thing to be wary of. In the LS1 world, a duration at 0.05 should not exceed 224 degrees - any more and you will really need to play with things to pass emissions. I'm sure its similar for LT1s. Stay at max a 224 duration and a 114 LSA to be safe (112 can pass, but I wouldn't find it easy - 111 LSA, forget it). You CAN do more, but it gets trickier.

Just make sure your cats (or cat) work well too.

I plan to pass with my heads and cam. AFR 205s with 66cc chamber for about 10.2 CR and a 224/224 581/581 114 cam.

 

You should be able to do a heads, intake and a CC305 cam or Hot cam and make about 330-350 RWHP and still be able to pass emissions.

 

I wonder if a 228/232 .600/.600 will pass in an LS1?

 

get a custom grind cam matched to your heads for best performance and emmisions. and a bunker tune will help as well:P

 

I am SO glad I dont have to worry about that emmisions crap.

 

Me too

BTW. My capri has heads, cam(mild grind), intake,non-factory carb, no egr, no air, no cats and I still passed

 

I wish I had to worry about that emmisions crap.

Would mean I would be putting down some serious power......not near stock joke power like now.

 

Boy, you would need one helluva tune for that to work. It would be interesting to try, but I'm actually staying away from my preferred 224/228 580/585 114 cam just for the reason that its such an unknown quantity for emisisons. Tuners say it is possible to tune that or bigger for emission (228, or sub-230 being max) if you get it perfect, but when I ask them to give me an example of one, someone who has a emission cards showing that it has passed, they draw blanks.

Every now and then I hear of someone saying they "know" someone who passed a 228 cam in Cali or somehting like that, but if I ever try to pin down a source, find out who the guy is, etc... the person never seems to exist. So I figure its someone either bs'ing, paying off the inspector, or someone who really knows what they're doing but won't reveal any so-called trade secrets.

Still, I'd love to try it. I just don't want to be first on my car. I'm just too busy as it is to take on the burden!

 

Yeah, but you live in hick-land, Darren... that is your reward, that is also your punishment.

cough cough j/k