What kind of TPI does 94 TBI 350 have?

What kind of TPI does 94 TBI 350 have?

Man does this truck run strong with mildly worked over 083 heads, an LT1 roller cam, and mass air TPI with some chip burning. It will blow the tires away from a stand still just rolling on the gas, I need to put a posi in next to be able to hook this thing up at all.

Can a Vortec intake be fitted with a TBI intake?

Then you need to either buy a TBI intake for Vortec heads, or an adapter plate (Holley makes one) to fit the stock TBI onto the Vortec intake. Then there’s the EGR. You have to tap off the exhaust manifold/header for the EGR with Vortec heads. Then there’s all the ECM tuning involved.

Is it worth it to upgrade the TBI 350?

Not worth the hassle, IMHO. The heads you have are somewhat odd (swirl port), but the runner volume is still 170cc, so no gain there. They’re also 64cc chambers, so no gain there. The Vortecs will flow more and be more efficient, but the TBI is only good for ~520 cfm @ 3″ IIRC.

What’s the Bang for the Buck on a TBI 350?

The compression is really what has me worried about the bang for the buck. I could run /015 head gaskets and gain half a point maybe, but if it truly is 8.3 stock that’s pretty miserable. Tuning is not a problem, I have an AutoProm I can burn chips with…I’ve already been doing that for the Beretta.

What is the TBI code on a 1990 Chevy truck?

Consult a service manual or see below for any check engine light code definitions. You can use a late 80’s or early 90’s GM TBI definition. If you have access to a scan tool use a hook up for a 1990 350 cu. in. 5.7L Chevrolet truck. For some scan tools enter VIN 10th“L” 3rd“C” 8th“K”.

How does the GM TBI fuel injection system work?

The GM TBI (Throttle Body Injection) system uses a pair of low pressure fuel injectors mounted above the throttle body opening. Unlike a port fuel injection system, that sprays fuel into the intake manifold runner just above the intake valve, the injectors in this system spray fuel directly into the throttle body above the throttle plate.

What should the fuel pressure be on a 350 TBI?

From 370-440hp you need to bump the fuel pressure up on the 454 injectors to the 15-18psi to increase their flow rate to 100lb/hr.

Where is the idle plug on a GM TBI?

Plug the vacuum lines with golf tees or other suitable item. Remove plug over the idle screw located on the right front of the throttle body by using a hammer to drive a punch into the plug and then using the punch to pry the plug out of the throttle body.