Tbi350 vortec heads

Asked by Apr 11, 2017 at 05:42 PM about the Chevrolet C/K 1500

Question type: Car Customization

I have a 5.73 50 TBI motor in my truck, had
something go I need to replace so while I'm in the
motor I might swap the heads and I take manifold
for vortec .. The local junkyard is a u pull with a lot
of vortec engines in the cars around... if I pull used
heads off can I just swap them in or should I get
them cut first?

8 Answers

72,145

There is a problem with doing this. Your truck is set up for the TBI set-up, not a Vortec set-up. The Vortec set-up is controlled by a OBDII computer and the computer in your truck is a OBD1. Nothing will hook up, and the fuel system is wrong in your truck for the Vortec set-up. If you wanted the Vortec heads on your engine then you would have to buy a new intake manifold to be able to get the TBI set-up onto the heads. I did this, check out my garage on this sight, 400 hp. roller rocker, port and polished Vortec engine, '97 Vortec engine in my '95 Silverado.

1 of 1 people found this helpful.

I said vortec intake manifold but my phone separated the words lol

What I was reading was implying that I can swap the heads and pick up a intake manifold and a throttle body spacer and run it on my tbi 350

72,145

Yes you can, I did that.

72,145

But you would need to buy a TBI intake manifold to bolt up to the Vortec heads. You can't by a spacer for the Vortec intake manifold.

72,145

I got my intake manifold out of Jegs.

What I was reading was saying it requires a vortec intake manifold to fit the heads? Unless a specific tbi aftermarket fits the motor with the vortec heads? Also if I do this and get heads from the junkyard that are good and not cracked etc should I get them cut? Or would I be okay and upgrade the valve train ?

72,145

Thats what I said. From Jegs, intake p/n 809-12496821. But what you want to do here...all depends on the condition of your block, how many miles are on it? On Chevy's I would not do anything with a block that would have over 50,000 miles on it. It is a crap shoot, no guarantees. Reconditioning the heads raises the compression, and the chance of turning the engine into a oil burner. It would pull the oil up past the rings. Vortec heads are a high flow head anyway. Here is a link to the TBI Vortec intake manifold... http://www.jegs.com/i/Chevrolet-Performance/809/12496821/10002/-1

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