tbi to carb

Wanna put a carbed 350 in my 92 roadmaster what all will i have to do to make this happen

The real question is WHY?


Are you doing other mods and trying to get away from reprogramming?

I would personally leave the tbi. When functioning properly, injection it is generally better than carbs for driving applications. If you decide to switch, you will need to:

-Switch out the intake manifold for a carb one
-Get a carb, obviously
-replace the distributor with one that does not have electronic advance
-install a return style fuel pressure regulator or a fuel pump designed for a carb and a tank pickup
-Leave the ECU, it controls more than just fuel/spark. The transmission torque converter lock up depends on it.

There's missing info, but that's the gist of it. If the switch is made other things should be factored in. You need all the necessary gaskets, throttle linkages/springs/brackets and fuel line fittings.

I'm sure there's more to it, but those are the major points. Oh, and the check engine light will throw fits.

-Tony

Well that's for converting. Just realized you would be switching the engine. Basically the same thing though. If you already have the engine setup, then ignore the above that's obvious.

-Tony

Didn't the 92's have the 700R4 (NON electronic) transmissions?

Superior Finish wrote:

Didn't the 92's have the 700R4 (NON electronic) transmissions?

The ECM still controlled the lockup convertor.

Bill

convert2diesel wrote:

Superior Finish wrote:

Didn't the 92's have the 700R4 (NON electronic) transmissions?

The ECM still controlled the lockup convertor.

Bill

He could run a simple late 80.s vacuum pot for the lockup,.

There's plenty of kits to control the lock-up manually or via a vacuum switch. Or you could piece it together pretty cheaply too. The ECM should continue to do it as long as the vacuum line is reconnected. Unless the ECM must go, I would leave it so you don't have to fuss with other means of lock-up control. Although the other means are pretty simple and cheap.

Just my 2 cents.

-Tony

I already have a mildly built 350 and i was just thinking i might put it in the roadmaster so i was asking to see what all would have to be done thanks for the info guys

Best of both worlds. Put the built 350 in, run it with TBI.

+1 . Agreed.

That does sound a lot cheaper

ive always heard tuning was a big pain in the arse with tbi...

If you run the 350 as TBI, there is a stock memcal ( chip ) for it. If it is modified with headers, cam heads etc, then welcome to the wonderful world of programming.