I think I will pop the TBI body into the mill and skim off those bore horns tho....

Good point!
I’m having a hard time drilling the screws out. Lost patience with it today....
So finished off the intake.
Came up pretty good.

I think im gonna need to break out the TiG on those...

I think these are good replacements...
https://www.grainger.com/product/GRAINGER-APPROVED-Button-6EB95

Stripped and dry blasted the intake back to bare aluminum, still some details more detail to get before Im happy with it.
Interestingly, the EGR was already blocked off...
16400

16401

16402...

Thanks guys!
The Cerakote is just a super thin clearcoat, purely to keep the finish good.
Let me look at the other ECUs I have and confirm.

I will dig into the info provided so i can...

Thanks.
Yes, 747. I remembered wrong, lol.
Apologies in advance for my lack of knowledge and questions!
So, I have the factory aluminum intake, and an Edelbrock performer.
As its TQ/MPG I’m...

Thanks for the input!
I did not see an O2 but, I have headers with dual exhaust and no H pipe, so 3 wire it will be.
Actually I have a pair of "727" ECM's to hand from from an "87 and '90 R20 454...

Hi Everyone!
I have a 1973 Chevy K10 Pickup with 350/350/NP205, that I'm restoring/converting into a Wilderness camper.

The original Quadrajet was giving me problems for years and a rebuild by an...

Still working on this.
I went with a Carb setup, but I'm battling mixture issues.
I have begun to build out/restore the TBI in preparation.

One question I have is I cannot find the seals that...

Agreed, that its a solution, but of course there is 2 possible pumps to fail.
The good news is that both are exterior pumps, so no dropping tanks to fix.

Welcome to the Knowledge Brad!

Question...

Having now added a Innovate wideband O2 sensor...
Is there a way to get that to "talk" to the GM ECM correctly?
Or should I just plan to add a narrowband to the other header?
...

Thanks for the AWESOME input guys!

My nightmare before Christmas has kept me busy!

The move ended up happening with just the carb in place, as I had a bunch of issues to resolve before i could...

Ok, things just changed up.
I have to have the Motorhome up and running in 2 weeks to move it.
Put the Quadrajet on and its just not running right.

Can I do the basic TBI conversion using the...

I have the 4l80E, but i do not know what year it is... see my original post on page 1.
I am aware of the "Force Motor" difference, so will keep that in mind when I rebuild it.

So, am in the ongoing march toward the TBI/4L80E swap.

Was at the Junkyard on halfprice day, and grabbed this... for $18...

16197427 BJYL ecu and about as much wiring as I could reach from a...

Sorry for the delay in responding...
Yes, the Smog pump MUST be there to make this pass smog.

I am working toward this conversion now, and have more questions.

What "Size" fuel feed and...

Thanks Tom!

So here is what I am thinking...
The 1987 was my own vehicle for 15 years and I know it ran fine, but the 1990 was a non runner, so I have no reference point.

If I use the 1987...

Still working on this.

Found and labeled the 1990 ECU and the 1987 ECU.
Both came off R2500 3/4t 2wd suburbans with TH400's

The 1990 is a 1227747?...

Good info, I will pull them if I can.
So, I am taking the TBI unit, Harness(marked every wire or left parts attached), sensors, Air filter, air injection setup(not the exhaust manifolds), smog pump,...

Almost finished stripping the TBI parts off the Suburban.
Di I need the fuel pipes that come up to the TB?

Thanks for the input guys.
It does seem really dumb to put restrictions on making any vehicle run CLEANER than it did originally, which adding injection, and and a cat will undoubtedly do..
In the...

Ok, thanks for the info.
I will try to get a read on the engine casting number that is on the Jasper remanufactured engine, as I doubt its a 1984 vintage unit. That might help me.

Thanks for the input Guys.
So... let me understand this...
I can use either of the TBI units I have with similar results, but need a different ECU to control the 4L80E?
Reading the responses... I...

Hi Everyone!
Need some help and advice...

I have a 1984 Airstream Motorhome, which I have had a for a few years and am restoring slowly.
It is based on a Chevy P30 chassis, and has a Jasper...