While looking up some facts on the OHC I found:

A 265 cid OHC6 was built for possible use in the Catalina and Tempest. It apparently had a longer stroke. One-barrel and four-barrel versions were built.

What became the 1966 230 cid OHC6 was originally to have been 215 cid.

In 1969, Pontiac built a 230 OHC 6 "Hemi". It had 325 gross hp.

Below is from:
http://www.firebirdgallery.com/67codes.htm

Firebird Sprint
The Sprint package added a heavy duty suspension, floor mounted gear shifter, and a healthier OHC6 featuring more cam and a 4BBL carburetor which produced 215bhp. This model can be identified by a set of "OHC-6 Sprint" badges that appear on the forward edge of the rocker panels and a thin set of stripes installed on the sides of the body. These differed from those used on the "HO" package. Cost of the Sprint package: $116.16

Scroll down to the engine codes, it lists it as 215HP @5,200 rpm

Sory for the long post to this already Long posting.. But I found it interesting and thought you might too?
Brett - 67 Drop Top 455!