Fummins

Hey Guys, been looking for another car for a while here on the site and locally, bought one last week. It appears to be a completely unmolested car as far as the body and majority of the engine is concerned. Car is powered by a Rocket 350. Now remember this was/is a California car, manufactured in the Fremont plant and all the emissions control equipment seems to be there and functioning. Since the car will never need smog i want to improve performance by removing/plugging the "smog" systemwhere possible. Now the car has a Performer manifold and a Holley 600 cfm carb with part #40480 stamped on it, I assume these were not factory options and were aftermarket installed? The car has the original Air Cleaner set up and a small "air cannister" in the front passenger side with three vacumn lines, two of which which lead up to a "T" that is threaded to a threaded intake manifold plug etc, etc. What is the cleanest, easiest way to bypass and clean up the system and maybe gain a little more performance? Thanks for all input.

joe_padavano

Before you start ripping stuff out, you might want to understand what it does and how it affects the car.

The canister you mention is the evaporative emissions canister. It simply recovers gasoline vapors that would otherwise be vented to the atmosphere and returns them to the carb to be burned. Not exactly detrimental to the car or your wallet.

The only other piece of emissions equipment on your car is Transmission Controlled Spark (TCS). This is a system that disables distributor vacuum advance in all gears except high (third if you have an AT). TCS is supposed to reduce NOx emissions. Personally I'd bypass it and simply connect the distributor to manifold vacuum.

There are no other emissions systems on the car to speak of.

Fummins

Thanks Joe, nothing removed yet, thats why I posted here first. Learned that lesson a long time ago lol. So your opinion is that a California car vs a Non California car of the same year and equipment would perform the same?

joe_padavano

In 1970, the only difference between a CA car and a 49 state car was the evaporative emissions canister, which has no effect on performance. The TCS was used on all cars that year.

Fummins

Thanks Joe, much appreciated.

oldcutlass

Congrats on your purchase.

Fummins

Thanks Eric, shes a dandy and clean as I have ever found one. Twilight Blue with old school Cragar SS wheels, kinda makes me giddy looking at her lol

oldcutlass

You know the drill by now...pictures.

Fummins

Well since you asked....lol

s i 442

That looks like a fun one to drive and tinker with.

Fummins

It is so far.....lol

Redog

Nice looking car

oldcutlass

Very nice!

71rocket

Pretty car. Looks good with those Cragers.

BLUE72RAGTOP

Good score. I like it!

Fummins

Thanks Guys, been freshening the motor up, she just keeps running better! Of course I had a BB 4 spd in my last Cutlass so it takes a little getting used to lol