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How do i get more performane from a 2008 silerado

Have a 4.8 vortec where do i find a performance enhancing devise to give more horse power and better mpg's

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The first thing is a K&N air filter , the next is headers , then a cam and lifters , good luck

Posted on Dec 03, 2014


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Restrict performans solution

Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.
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How to locate an exhaust leak on a 1997 silerado 5.7 vortec

This isnt a exhaust problem its a combination of other things ,iam a europeon mechanic with no experiance of the layout of this engine or vehicle for that matter so i suggest you try a direct question to emmisionwiz whos a ford dealer mechanic and should have a better idea than myself ,but i wouldnt be surprised that you have avacumn leak like on the inlet manifold ,possibly even the brake servo take off pipe but as stated i have never seen this vehicle so i have no idea ,if i was their with my head under the bonnet i would most definatly soon know whats wrong but from afar? difficult to say the least

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Hi, I have a Chevy TAhoe 2007 LS, 5.3 liter, 350 BHP, V8 vortec. Its a fantastic car. However fuel is getting horribly expensive where i live and i was wondering if there is a way to re-program the chevy...

Considering the size and weight of the Tahoe, running on 4 cylinders would be less fuel efficient then running on all 8. Its like having one horse pull a cart instead of two, sure it takes more hay to feed two horses but combine they work a lot less to get the job done. I can't image running a Tahoe on a 4cyl engine, the acceleration would take donkeys years to get up to speed, it would be struggling and working its guts out to get anywhere with that minimal horsepower. I think your best bet, dump the Tahoe and get something smaller and more efficient. Owning a SUV these days is like owning a very hungry horse, it needs to be fed if you want to use it. If you can't afford the fuel its using its time to put it to pasture and get something else! The 5.3L is a gas guzzler, just how it is, i haven't seen one yet that did better then 15-18mpg on the highway, and thats usually at the top of their range under ideal conditions. Your probably better off with something smaller with a V6 or even an inline 4. But your not going to fix your issues by crippling the Tahoe.

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Ihave a C2500/ext cab long bed,GVR8600LBS w/7.4 vortec 4L80E and 4.10 gears.Iget 9 MPG Iwould like to get better gas mileage and more performance.[where do i start].

I have the same engine. I installed a banks powerpack on it and now I get about 14 on the highway and about 11 city. First thing is a tune up, plugs, wires, fuel filter, air filter, and that sorta stuff. I gutted my intake to let the engine breath better. The banks system opened up the exhaust quite a bit and it has alot more power and get better mileage. A chip can add some fuel economy as well. Any more than simple stuff like that, you'll start getting into serious money. My banks powerpack was $1800 and got me about 2mpg city and about 3 mpg highway improvement. Not much better on fuel but it did get alot more power which means I can be lighter on the gas pedal.

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1 Answer

I have heard of many "chips" and "superchips" that are suppose to boost a cars performance - they range from £10 to £500 - Does anyone know if these actually do anything or whether they are just...

They aren't just gimmicks. Some do work. All they do is change certain key parameters of the engune. Remember the manufacturer of th car has to share some of the performance for better fuel mileage. Aftermarket performans chip makers don't care how log your tires last or the engine or trans longivity. If you get one get one from a performance supplier with a good name. Nody I know of will stand behind any damages that may result. Good luck

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Better engine performance and gas mileage

try either a cold air intake or a chevron....a chevron is a cylinder with slots cut like arrow heads which will remove air turbulence....that alone will increase your performance at least 25% and horse power about another 40 to 50.
go0od luck

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I need to find the complete specs of my motor and what basic things i can do to enhance its performance

you cant never go bad with intake system or full synthetic oil also another cheap way to gain horsepower is cleaning or replacing fuel and intake filter and if you looking for somemore horses i recommend legal headers

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Swap a 86 350 into a 91 camaro with a 305 TBI

good idea, use 350 block,305 heads &intake.the reason is, if the 91 305 heads are 4 bolts in center of valve cover the are what you call vortec heads,they have better flow.the tbi will respond better &still have bettergas milage than old style heads.the 350 block will add more overall shouldnt have any problems doing so,you will notice a diff.have fun, good luck.

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