How much horsepower does a vortec 327 have?
Chevy never made a 327 vortec. the last time they produced a 327 was in 1969, while the first vortec was made in the early 1990s.
I own a 93 Chevy Silverado K1500 4x4 with V8 350 TBI 5.7L. so unless Chevy has changed their blocks, i would suggest that naturally your block is a SB 350. However, since your question was about horsepower, not which block you have, I will tell you the horsepower. The 1998 Vortec 5.7 liter makes 255 horsepower.