converting to gm tbi

[rsgt]

I have a carb 305 in a El Camino. I am going to convert to tbi. I have a 1227 ecm to use. Do I want a harness from 88-92? Will it matter what car it is from, camaro, caprice, truck. Thanks

[Six_Shooter]

A 1227??? There's more to that number and the end is really the most important in identifying what you have.

Likely a 1227747, but would be good to know before giving specifics on parts.

That being said, just about any TBI harness could be modified to work.

[rsgt]

Here is the ecm number 1227747 would it be better to use a 305 throttle body or would one from a 350 be just as good. I want good mpg. Thanks

[EagleMark]

Now if you had an ECM with a 305 5.0L engine and your trans and just about ann TBI harness it can be nmade to work.. And a TBI unit from a 305 your set.

[rsgt]

I got a harness from a 91 firebird and I have it all cleaned up. I have a distributor from a 88 chevy truck. I see the harness has the four prong connector for the distributor. The distributor also has a place for a two prong connector. Will I need a short wire harness for the coil to distributor? Thanks

[Six_Shooter]

Yes, you will need that short harness.