View Full Version : 4.3, and vortec 4.3 help

05-10-2007, 04:13 PM
i was wonerding what the differnce between a vortec 4.3 and a non vortec?

is the vortec rolerized or what:dontknow:

05-10-2007, 04:34 PM
I believe all vortecs had rollerized valvetrains.

I may be wrong there, but i do know that a vortec head will not fit on a non vortec block without doing some modifications at a machine shop.

05-10-2007, 08:47 PM
i thought the heads were the same...

05-10-2007, 08:48 PM
all different intake manifold thats it i think

05-16-2007, 08:43 PM
Votec heads use a different design internally, to make more power, alas to run Vortec heads, you need a matching intake....HOWEVER and yes I"ve done this, I've taken a set of 4.3 Vortec heads and intake that dropped it all onto a non Vortec engine, a lil rewire for the injector and it ran perfectly....but it isn't rollerized, never has been....too pricey