Is the Vortec 454 in a 97 Silverado 3500?
Is the Vortec 454 in a 97 Silverado 3500?
I have a 97 silverado 3500 with the vortec 454 in it. It has 200k on it, and has a horrible low throttle input miss and a high idle at times. It is also way down on power and stumbles until you really give it some gas, but even then, you can tell its low on power.
Is there a Chevy Silverado 3500 for sale?
The link I was sent was for this truck, I applied for GM credit, then when it came time to talk pricing, she said the truck she sent me wasn’t the truck for sale, but it was similar and had a plow on it. I told her I didn’t want a truck with a plow on it and she said, okay, I’ll call you when we get something.
What kind of engine does a Chevy 454 have?
The Chevy 454 first hit the market in the 1970s. The 454 is a big-block carbureted engine found in most older model Chevrolet cars and trucks. The engine uses eight cylinders to provide high-end torque and speeds. The combination of larger bore and eight cylinders equates to very poor gas mileage.
How to increase gas mileage on a Chevy 454 Eng?
Routine maintenance and maintaining a low idle speed also increases performance and mileage. Maintain the proper tire pressure in your vehicle. Check the pressure and ensure that it is at factory specifications. Lower tire pressure creates higher drag that forces more fuel to be consumed. Check the tire pressure weekly.
Why does my GMC Suburban no start flooding itself out?
If I unplug one of the injectors it starts up and idles and I am able to plug the injector back in and it will idle as normal. If I try and start it with both injectors plugged in, it just cranks and cranks without attempting to start.
How big is the engine in a Vortec truck?
There were a few different trucks and full-size SUVs that came equipped this engine during the years it was on the market. The Vortec 454 engine had 7,439 cubic centimeters, or 454 cubic inches, of displacement, giving it the 454 or 7400 name.
What are the symptoms of Vortec drivability issues?
The symptoms include a very rich running condition, a rough idle only in park or neutral, and the scanner shows a more rich condition on bank 2, and upon acceleration or any application of the gas pedal my bank 1 knock sensor is retarding timing by 6-7 degrees and 3-4 degrees when cruising.
How many GMC trucks have throttle body injection?
New and Remanufactured Throttle Body Assemblies for 305, 350, 454 Chevy, GM, GMC Trucks, Cars, Vans and 6 Liter and 7 Liter Trucks. Serving our valued customers for over 30 years.
Is the Chevy TBI 454 having Idle problems?
Recently rebuilt the 454 in my 1990 TBI Burb. I am having a terrible time with getting it to idle smooth. The engine has a little over 500 miles on it. I have spent countless hours going over the engine looking for vacuum leaks and believe every thing is OK on that front.
Is there a Vortec 454 fuel pressure regulator?
The vortec 454 does not have the same injectors as the small block vortec. It uses the same type injector LT1 and TPI engines. They are buried under the plenum. Do you have any signs of fuel in vacuum line to the regulator? Does the fuel pressure at idle seem steady?
