Talk about inconsistent:

Here is a site that lists the head casting as a 80-85 350 truck
head (a 7 bolt head):
http://www.cehighperformance.com/c_t...lock_codes.htm

Here is a site that lists it as a 95-96 truck 350:
http://www.donsautopages.co.nz/chevheadnumbers.htm

here is a site that lists it as a crate motor:
http://www.ecbrcnj.com/id14.html

and my MSA-1 chevy ID book lists it as the 91-99
350 truck head

From the late casting number, it is certainly a 7-bolt head...the
7 bolt term refers to a second exhaust bolt location on the end to
accommodate the longer, new style exhaust manifolds.