tbi swap help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jonesky2 · 03-04-2011, 03:16 PM

im wanting to swap tbi to my 76 k10. it has a freshly rebuilt engine with a edelbrock performer intake and hooker headers.

im going to the junk yard to get everything. and im wondering what year should i look for and what will i need from the donor?

Jonboy · 03-04-2011, 04:04 PM

What kind of cam are you running? I would use a 4bbl to TBI adapter, so you can keep your intake. You will need a place to mount the CTS in the intake, Throttle Body and assorted sensors, a knock sensor (just buy one new, they are pretty inexpensive, and tend to self destruct upon removal), ECM, and wiring harness. I did this swap recently in my '74, and it was pretty easy. If you can score a tank and lines out of an '87 truck that would be ideal, but get the lines from a 87-91 Sub or Blazer can be made to work, too. You can always run an inline pump if you don't want to swap out the tank, but you will need to make sure you run a return line back to the tank.

I used a wiring harness from www.fuelinjectionconnection.com , and was very happy with it. I didn't want the hassle of 25 year old wiring for $245, so I figured it was a good tradeoff. If you do end up going that direction, you can get the TBI parts from any GM TBI vehicle, but try to get a 7747 ECM (87-93 truck).

jonesky2 · 03-05-2011, 01:18 AM

Quote:

Originally Posted by Jonboy

I used a wiring harness from www.fuelinjectionconnection.com , and was very happy with it. I didn't want the hassle of 25 year old wiring for $245, so I figured it was a good tradeoff. If you do end up going that direction, you can get the TBI parts from any GM TBI vehicle, but try to get a 7747 ECM (87-93 truck).

Part #2523-2042-N is this the wiring harness you used?

jitteryguy · 03-05-2011, 07:25 AM

this is very long thread, but full of good info. all you questions should be answer'd in this .

http://67-72chevytrucks.com/vboard/s...d.php?t=317519

Jonboy · 03-05-2011, 04:35 PM

Quote:

Originally Posted by jonesky2

Part #2523-2042-N is this the wiring harness you used?

I'm not sure of the part #, I called Robert and got his recommendation. I would not go with too big of a cam when you re cam the engine. If it is too large, you may have to burn another chip.

jonesky2 · 03-05-2011, 01:06 AM

im going to buy a new cam when i do the swap. the person i bought the engine from put a new one in but he was going to put it into a carmaro. not sure which one to get

03-04-2011, 03:16 PM	#1
jonesky2 Registered User Join Date: Nov 2009 Location: Hooper Utah Posts: 224	tbi swap help im wanting to swap tbi to my 76 k10. it has a freshly rebuilt engine with a edelbrock performer intake and hooker headers. im going to the junk yard to get everything. and im wondering what year should i look for and what will i need from the donor?

03-05-2011, 07:25 AM	#4
jitteryguy GoatLube Experss Join Date: Oct 2009 Location: clarksville, Tn. Posts: 1,337	Re: tbi swap help this is very long thread, but full of good info. all you questions should be answer'd in this . http://67-72chevytrucks.com/vboard/s...d.php?t=317519 __________________ *Goat Lube Express*, locations in Qalat,Afghanistan & Clarksville, Tn. '87 R30 dually 454/TH400 '85 1/2 ton CCSB '92 S10 350/350 '84 MonteCarlo 383/PG/9"ford '78 Malibu wagon 350/350 '78 Cutlass (project family car) '96 S10 Jimmy (Moma's)

03-05-2011, 01:06 AM	#6
jonesky2 Registered User Join Date: Nov 2009 Location: Hooper Utah Posts: 224	Re: tbi swap help im going to buy a new cam when i do the swap. the person i bought the engine from put a new one in but he was going to put it into a carmaro. not sure which one to get

03-04-2011, 04:04 PM	#2
Jonboy Slots go on anything! Join Date: May 2003 Location: Richardson, TX Posts: 5,957	Re: tbi swap help What kind of cam are you running? I would use a 4bbl to TBI adapter, so you can keep your intake. You will need a place to mount the CTS in the intake, Throttle Body and assorted sensors, a knock sensor (just buy one new, they are pretty inexpensive, and tend to self destruct upon removal), ECM, and wiring harness. I did this swap recently in my '74, and it was pretty easy. If you can score a tank and lines out of an '87 truck that would be ideal, but get the lines from a 87-91 Sub or Blazer can be made to work, too. You can always run an inline pump if you don't want to swap out the tank, but you will need to make sure you run a return line back to the tank. I used a wiring harness from www.fuelinjectionconnection.com , and was very happy with it. I didn't want the hassle of 25 year old wiring for $245, so I figured it was a good tradeoff. If you do end up going that direction, you can get the TBI parts from any GM TBI vehicle, but try to get a 7747 ECM (87-93 truck). __________________ 1974 Jimmy- 5.3/4L80e/NP241



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