Question about 2007 Chevrolet Tahoe

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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 to run on 4 cylenders instead of the usual 8. Can i put a manual switch in it to turn on/off the 8 cylenders. I called the dealers here but they said they dont do that for customers. I dont mind going to local mechanics but first i need to konw if this is possible and how it can be done. Would love your helping hand. thanks in advance

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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.

Posted on May 04, 2017

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SOURCE: I need the torque specs and sequence on a 1998 chevy 350 vortec

Vortecs are a little different that old school small blocks, grab a Haynes or Chiltons, the cross patterns and specs are simply diagramed. Vortec, as any really, start with 25# then 45# and then final torque which I believe is around 70-75# but to be sure verify with the manual. AutoZones, Murry's, Adavance auto all carry the books, Cheap insurance.
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