EDziewior19

I have a 92 camaro rs with a TBI 305 and I have a carb 350 I would like to swap into it but I keep getting told theres a lot I would have to do to make the swap work. Theres taking out the fuel pump and putting in a carb pickup, take the ecu out and make the distributor work off of vacuum since there won't be a computer anymore. What more is there I would have to do to make this swap work?

five7kid

iTrader: (14)

Welcome aboard thirdgen.org.

There is a tech article on this subject. It is linked from the thirdgen.org homepage, and is also in a sticky in the top section of the Carburetor forum.

This is, of course, illegal in all 50 of the United States. Assuming you live in the United States.

Grizzlybear226

You could just swap to a 6al msd box in place of the ecm and a vacum advanced distributor. And for the fuel line just run a fuel regulator with a return fitting so you don't blow the pump.

EDziewior19

Whats illegal?

EDziewior19

I have the vacuum advance accel distributor, the msd box i didnt think about, and i found a way to use my electric fuel pump with the carb setup. the three wires coming from the fuel pump (the ground, power and hot wire), im going to reroute the hot wire to my ignition relay and im going to take the fuel pump on the motor and put the regulator there. and the fittings i know i gotta get. but thank you for the help, i can use all the help i can get. if theres anything else you can think of please let me know.

Grizzlybear226

I don't think you need to rewire the pump. When you turn the key once, say to turn the radio on without starting the engine, you should hear the fuel pump priming the engine. I could be wrong but it should still run without the rewire. Also without the ecm your torque converter isn't gonna lockup so you need to install a tci lockup kit in your 700r4 or else your rpms wont drop the same way when they did with the tbi. Search it on summit they're not expensive

EDziewior19

My car is manual 5 speed. I'm gonna look more into the fuel pump thing though.

camaronewbie

It's federally illegal to change any emission component of any vehicle to anything other than what was on that car from the factory, or to something newer. TBI is an emission component, therefore illegal to change to a carb (an older rather than newer technology). But - feds don't look under car hoods.

You need to be concerned with YOUR local inspection process and requirements. And keep in mind, that if you move in 2 years to another county/state, you might not be able to take your car with you. In other words, you cannot register a carbed 1992 car for plates in California, as well as many many other states and counties.

There's a ton of info about exactly everything you need to swap to carb on here, you just have to use the and research it.

EDziewior19

Um in case you didn't know camaronewbie, any car that's 95 and older doesn't have to take an emissions test because its obd1, I don't have to have a cat, egr, charcoal canister, nothing, I don't have to have anything that has to do with emissions. I can't get in trouble for it, look it up, cars that are 95 and older don't have to take emissions test. Theres nothing the EPA can really do unless they started testing obd1 cars. I don't mean to sound like a jerk but I know I can't get in trouble for what in doing or else there would be a lot of people on trouble.

Chevy2035

Depending where you live at, 95 and older cars still need a converter or the appearance of one if they had one from the factory. In NC where im from, Cats are considered in the safety side of the inspections on 95 and older.

five7kid

iTrader: (14)

Wow, from almost 3 years ago...

In the Colorado Denver metro area, cars '76-'81 have to go through an annual emissions inspection, and tailpipe sniffer test at idle and simulated cruise. Cars '82-newer have to go through the "enhanced" sniffer test on a dyno along with the inspection every 2 years. OBD II cars also have the computer read for trouble codes.

The EPA does not say that cars 1995 model year and older do not have to be emissions tested because they are OBD I. That may be a local regulation, but it ain't the Federal. If the car is operated on public roads, the EPA doesn't exempt any emissions rules.

88_are_s

In California (America's King of smog restrictions) Regular vehicles 1976 and newer must be smogged, Diesels 98 and newer must be smogged (that was a very recent stunt the feds pulled on diesel lovers)

TY Treat

It is not illegal, could be an issue an states with smog testing cheap happen