The 355 is almost done. I've got the bottom end machined, assembled, and sitting here ready to go. The heads will be back from GTP in another 2 weeks. But I've still got to figure out which cam I'm going to use.

This is all on an LT1 that should make ~ 9.4:1 compression with the 21cc dished pistons but it will also be depending on how much the heads are altered in the Stage 2 package.

The trick is that all of the emissions equipment on my car is 'defective' except for the cat. So I really have to weigh my situation.

I don't have enough experience with late model cars that have emissions regulations to know what cam will or will not be able to pass the sniffer. I do know that for either cam I choose I'll be stocking up on dry gas.

So I guess I'm looking to hear some experiences from people who have built their cars and tried to get past the sniffer. What were your cam specs and did you pass/fail? If you passed, did you use any of the dry gas or hot cat tricks to eek it through or did it just pass on its own?

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1991 RS LT1 - red/black 355, bolt-ons, and 12 pounds of intercooled boost on it's way in '01

2000 C5 Coupe - black/black 6-spd, optional polished rims, first run 13.056 @ 109.52 stock

[This message has been edited by Brett (edited November 08, 2000).]

 

bttt

 

I don't know if Connecticut uses the appearance test, the tailpipe sniffer or both. Back in 1979, Car Craft did a story to see if they could get their project Camaro past the tailpipe sniffer without a cat conv. Aside from the usual tweakings, they put a much smaller pulley on the A.I.R pump (smog pump). That pump was spinning so fast and flushing so much fresh air into the exhaust that it fooled the tailpipe sniffer! I don't remember how the plumbing was done, but try that!