The word 'vortec' is the name of the cylinder heads used in Vortec Model engines in the year 96'+ The engines that use the Vortec cylinder heads are the 4.3L Vortec, 5.0L Vortec, 5.7L Vortec, and 8.1L Vortec. They were only put on Gen I small blocks. If they are any other size Chevy engines and still retain the Vortec name then it's purely a marketing name, the same goes is it is later than a Gen I engine. For example the new 4.2L I6 from GM retains the name Vortec, but it does not actually use Vortec heads as these heads were only made for OHV engines, and the I6 is an OHC engine. The Vortec heads are based on the LT1 and LT4 head after they were discontinued along with their reverse flow cooling design. It is simply an effect made in the head similar to a vortex to better atomize the fuel and air intake charge when entering the combustion chamber, it is not a different type of motor.
Yes they will fit right on there with no machine work are problems.
NO. That would be the TBI / throttle body injection engine Not a vortec. The vortec will not work in the 91.
No they will not.
With the Throttle Body injection and a TBI intake from Edelbrock for vortec heads yes it will work. If you mean using the vortec injection with the TBI electronics then no it will not work.
NO it will not. You would need the heads off the vortec engine to make it all work. The 96 that you are talking about should be a VORTEC engine already from the factory. But you may have an early 96 and that is why it is a TBI engine. That was the year they switch to a vortec. 96 TBI no such animal,TBI OBD2 no
No it will not. The 96 vortec has a crankshaft sensor and alot of other sensors on the engine that is required so the transmission will work that will not interchange with the 92 engine. Even the fuel pump would have to be changed. You must put a VORTEC engine back in the 96 so everything will work correctly.
Yes, they will work. but you wont gain power because the little 305 isn't putting out enough flow to keep up with the heads
The vortec has bigger pistons
Look at the intake manifold. A vortec engine has 8ea. All the others have 12ea.
The 2001 model of the Light-Duty Silverado 1500, had an option of four engine sizes; a 6.0L Vortec V8 engine, a 4.3L Vortec V6, a 4.8L Vortec V8 or a 5.3L Vortec V8. The Heavy-Duty 1500HD comes with three engine options, these are 6.0L Vortec V8, 8.1L Vortec V8 and a 6.6L Duramax V8
it will work I have vortec heads on a 72 400 small block, I had to get the heads reworked for the 400s water ports or steam port and a vortec type style intake will be needed
The 4.3 Vortec engine never had a carburetor.