Vortec LS comparison.JPG

CLARIFICATION:  Everyone consistently calls a Vortec an LS and that is not accurate!  Although Vortec engines are "LS" based they are NOT LS engines IMO.  Besides most Vortec's being iron block, as seen above there are some serious size differences and considerations depending on your project.

VORTEC ENGINE IN CARS:  For the most part, it will be challenging to put a Vortec truck engine into a car.  Most cars, even old muscle cars have relatively low hood clearances.  If running even a minor cowl hood a Vortec may fit.  You can gain an inch or two by removing the plastic engine cover and cutting some of the plastic tabs on top of the Vortec intake manifold.  This may be all you need for clearance and a Vortec will fit in your car.

CONVERSION:  It is NOT economical IMO to "convert" a Vortec to an LS nor an option I offer.  Below is what would be needed just to lower the intake height and match the LS.  If you ALSO require the shorter LS accessories that will add another $500 or so.

  • LS6 Intake Manifold - $400 minimum used
  • LS Injectors - $150 used
  • LS Fuel Rail - $100 used
  • Alternator Relocation kit - $250
  • Camaro Water Pump - $150
  • Custom Tuning - $500+

WIRING HARNESS:  The other thing to consider is the differences in the Vortec wiring harness layout versus the LS layout.  The Vortec truck harness has a large portion up on top of the intake manifold, is supported by it, and is covered or hidden by the plastic engine cover.  The LS engine harness is configured much differently and the intake manifold is exposed and uses valve covers to dress up the engine.  My engines / harnesses are ALL Vortec Truck, therefore when you put a car intake on a Vortec you are left with an excessive amount of wiring on top of the intake manifold.  It will work, but it is very "ugly" to say the least.