The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - What HP is really in the 91 Silverado 350/5.7 engine.

piecesparts · 04-06-2009, 09:40 AM

As I said guys, my truck yhas 275,000 miles and the truck is still strong. I want to update the engine and even look at something that has some more performance.

Combustion is right to some degree about the TBI, however it is a solid system. There are better and more efficient systems in the world.

The Throttle body was a poorly designed idea, of having two injectors spraying onto the butterflies of the unit. That in itself creates a poor fuel dispersion system. The install of a TB Spacer allows for that dispersion to increase, since it has a way to mixing up the fuel and air again. The multipoint injection gets the same amount of fuel to each and every cylinder that a carb or a center mounted TBI unnit soes not, so effectively MORE horsepower is available. The end cylinders are not starved like a center mounted unit does.

04-06-2009, 09:40 AM	#6
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Re: What HP is really in the 91 Silverado 350/5.7 engine. As I said guys, my truck yhas 275,000 miles and the truck is still strong. I want to update the engine and even look at something that has some more performance. Combustion is right to some degree about the TBI, however it is a solid system. There are better and more efficient systems in the world. The Throttle body was a poorly designed idea, of having two injectors spraying onto the butterflies of the unit. That in itself creates a poor fuel dispersion system. The install of a TB Spacer allows for that dispersion to increase, since it has a way to mixing up the fuel and air again. The multipoint injection gets the same amount of fuel to each and every cylinder that a carb or a center mounted TBI unnit soes not, so effectively MORE horsepower is available. The end cylinders are not starved like a center mounted unit does.