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I'm in the process of putting 1 tons under mine with 4.10 gears so I'm hoping that'll really wake it up. I've had thoughts of doing a sm465 swap but I may stick with the th400 for trail use.

Yep, I feel the same way but it is what it is. Anything newer than 1976 must have emissions testing. Only thing exempt is cars that are less than 6 years old. I moved from a state where my cucv was an antique vehicle with no emissions to here. Theres been plenty of recent debate about if...

I was told 33% opacity was the cutoff to pass so pre turbo I was on the border of passing at 32%

I just don't normally travel on roads with a higher speed limit than 45mph. It's very different here as far as maintaining speed. Back in Illinois I could travel on any highway at 65-70 mph without issue. Here not so much.

I almost never go over 45mph honestly. If I'm on the freeway I can sustain 65mph but really only the one in town as anything with elevation slows me down pretty quick. I see about 18-20 mpg though if I can keep out of it. I'm at about 5,500-5,800ft of elevation though

A quick picture of the engine bay

It's a GM4 turbo from a 6.5 using the 6.5 intake manifolds, passenger exhaust manifold and I made the crossover and exhaust. I've been running it about 10 psi or so but turned it down to 5-6psi for the test because I didn't know how "nice" they'd be to it. Anything newer than 1976 I believe...

Here in denver I have to get emissions tested. Last year's results NA And this year with the turbo at about 6psi