Kind of dissapointed with new motor

[76GMC1500]

I got it running today, and... it sounds BAD ASS!!! I have no idea how it's going to pass smog now. I guess the cam I picked was a little too much. Oh, and the exhaust smells so much better now. MMM efficient combustion

[drg84]

So why are you dissapointed? It sounds like it should be pretty decent. And as for passing emissions, why should you have a problem? is this for the 76?

[76GMC1500]

Last year for rolling expemption in California was '75 so I do have to smog and that is why I was dissapointed. Actually, some good news is that I had to lean it out to get it to idle which means less CO emissions which are the only ones I am worried about. Soon as I hook up the brake pedal tommorow I'm going for a test drive... to the radiator shop because my current radiator can't even begin to keep up with the motor.

[drg84]

75? Wow, california sux. Seriously though, ,as long as you have a cat convertor and it is within %5 of optimal burn, it should pass. Remember, 76 truck emission were like 71 car emissions. And remember, triple core radiators work

[tezz]

Is the smog year still rolling? I thought 73 was the last year that didn't have to smog anymore...?

[76GMC1500]

Smog stopped rolling at 75 in California. I have no catalytic converters and according to California smog law, it would be illegal for me to install them as it would be a modification of the original smog system. Also, my current radiator is a 2 row that has a large section of the core rotted out and has a few holes in one of the tanks that I have been trying to solder up. But, my local radiator shop should have a brand new 3 row waiting for me to pick it up tommorow, if I can get my current radiator to hold water long enough to drive down there.