posted August 14, 2002 06:24 PM Are the vortec heads that came on trucks the same as gm sells. Is there any better numbers to look for?
istock59 Dirt Freak
Total posts: 237
posted August 16, 2002 03:15 PM
96, 97 and 98 trucks I believe.
Casting numbers are:
hughes Dirt Maniac
Total posts: 141
posted August 19, 2002 08:22 AM
if you buy new castings, the only difference is the 906 castings are BARE, and the 062 castings are complete. If you run them don't forget to machine the guides if your gonna run regular z-28 springs. Stock vortecs don't come with a dampner and they will mess a motor up without the porper machine work for z-28 spring.
cas23 Dirt Roller
Total posts: 17
posted August 22, 2002 11:37 PM thanks for the info.