Originally Posted by engineczar
CompCams 26981-16 will fit with no machine work.
My error....those Comp Cams beehive valve springs fit will Vortec heads without machine work. They would be good to use with a milder camshaft with less than .460" valve lift.
The Comp Cams 26981 valve springs are the ones I used on my first set of 1993 L35 4.3L V6 heads two years ago. . My fresh heads are 1995 L35 heads and are being finished now have Comp Cams 26918 valve springs. I up graded to 344 lb. open pressure at .500" valve lift.