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?

11 Answers

79,315

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

79,315

Yes you can, I did that.

79,315

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.

79,315

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 ?

79,315

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

can I put my 1990 350 intake on a 350 vortex engine

79,315

Dhr23, no on the intake fit, Vortec heads have a different bolt pattern, the Vortec intake has 8 bolts to hold it down where as from 1995 on back take 12 bolts to hold down the intake manifold on GM 350 or 5.7 engines.

79,315

Dhr23, no on the intake from 1990, Vortec heads have a different bolt pattern, the Vortec intake takes 8 bolts to hold it down where as from 1995 on back take 12 bolts to hold down the intake manifold on GM 350 or 5.7 engines.

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