Whats the difference between the 350 5.7 and the newer 350 Votecs?

Devin

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My old 93 chevy has the 350 5.7 liter in it and the 94 chevy has the 350 Vortec in it whats the difference?
 
its the heads, the shape of the chamber where the valves go is a heart shape as opposed to other engine heads

vortex head is on the right and other engine head on the left.... http://images.customclassictrucks.com/techarticles/0405cct_head06_z.jpg

http://en.wikipedia.org/wiki/Vortec .... go there, tells all about vortec engines, the numbers go by liters, so a 5.7 liter would be a 5700
 
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