is it hard to swapp a cross fired 305 to a carb 350.

What all would i need to do this.

 

Really easy if you're good with tools and have decent mechanical ability. Really difficult if you're a retard. Time consuming either way.

You'll need a 350, carb, non-computer distributor, and wiring diagram so you know which wires to cut and which ones to keep.

If the car has a TH200C trans, you'll want to replace that with a TH350 or TH700R4.

 

If you just do a regular carb (non-computer controlled) all you need is a 12 volt keyed wire to your HEI power terminal, ground and 12 volt keyed to the choke, and your starter & alternator wiring. That will at least get it running & driving. The only other thing you may want to add are gauge senders, and wiring for AC if you have it.

 

Here's another question: could you swap a 305 cfi to 350 carb and still pass smog in California?

 

Yes. Provided that the 350 carb motor is the same year or newer than the chassis in which it is installed, and all of the emissions related components are swapped along with the motor (canister, cat, EGR, computer, ect.).

 

In the case of the '82 F-body isn't this ruled out, given there was no 350ci engine offered? Just asking for clarity's sake, as I don't live in CA and won't any time in the forseeable future.

 

No, as long as the engine is from a newer car, with all emissions equipment intact it is still legal. It is the engine that must meet a specific emissions test, not the chassis.

 

Thanks for the replies TKO and Kevin.

I have an 82 TA crossfire and have been wanting to slam a 350 in it. Last weekend I found an 85 Suburban 350cid, Edelbrock Carb with a 4-spd AT for $800. I'd like to use that Edelbrock Carb since it's 1 month old compared to the CFI intake that's 21 yrs old. Would I gain more than I would with the Carb than the CFI?

 

Another question, is there a place on the Internet that I can read up on the Smog laws and what i'm trying to accomplish?

 

Another question, is there a place on the Internet that I can read up on the Smog laws and what i'm trying to accomplish?

 

I dumped my CFI years ago. If you're willing to work on it, CFI isn't a bad system but you won't break any speed records. The computer is slow as mud, the intake needs porting, etc.

The CFI computer won't know how to manage the carb, so it won't be happy. You'll need to either swap in the Suburban's computer and wiring, or go non-computer in which case you'll have trouble passing emission testing. If you go non-computer you'll need some way to manage the transmission's torque converter clutch lockup, there are manual harnesses out there.

The Suburban's cam is probably crap, I'd swap it while the engine's out.