Chevy Vortec engines

[Theodore K.]

Can one of you engine guru's give me a short version of the difference between a chevy Vortec engine and a regular LS1, etc. I always thought it was the Head design mostly but I am not sure.
Thanks in advance.
Ted von Kampen

[Clem Z.]

Re: Chevy Vortec engines

one of the big differences is in the FI intake manifold. the votex is tuned for low RPM torque. i would guess the cam timing and ignition mapping is also different

[Joe L.]

Re: Chevy Vortec engines

Can one of you engine guru's give me a short version of the difference between a chevy Vortec engine and a regular LS1, etc. I always thought it was the Head design mostly but I am not sure.
Thanks in advance.
Ted von Kampen

Ted-----


Basically, "Vortec" is a marketing term for GM's line of truck engines. These engines are optimized for use in trucks but they are essentially the same design as those used in cars. They do have some specific parts that are unique to Vortec engines such as cylinder heads and camshafts.

Vortec engines actually started in the days of the Gen I small block. Those engines were also specific to trucks. They had specific cylinder heads which were originally used only on Vortec engines but they eventually found favor in the world of high performance. These heads required special intake manifolds that are not interchangeable with other Gen I small block intake manifolds.

[Clem Z.]

Re: Chevy Vortec engines

more than you wanted know. http://en.wikipedia.org/wiki/GM_Vortec_engine