quote:Originally posted by T.Solo: Unless I'm mistaken I believe I have a set of the C302 heads with all the bolt bosses cast at the same height. They have a date code of 1990. They came from a NASCAR team that was in a class limited to 9.x/1 compression, don't remember exactly. They are fully ported. The plan is to put these on the Pantera at some point.
Like I said, always exceptions and there are many. I saw a set that were fully machined except had just valve pockets and virtually no combustion chamber, presumably so they could be machined to suit. In fact, some of the teams just ordered bare castings because they didn't want secrets divulged to other teams by Ford. -That's competitive racing mentality.
They look like a nice set of heads and should work well. What are the volumes of the CCs? The exhaust ports have been worked to rectangular exit. I have a similar set of heads with a beautiful set of stainless CNC’d exhaust flanges that transition from the rectangular port opening of the to a round stepped weld socket for the round primary tube.
The flanges on that intake manifold sitting next to the heads in your picture look very thin. That along with the slots milled in the holes may suggest it has been machined for a lower deck height than 9.2” which wouldn’t be uncommon for a NASCAR engine if the lid came from the same place as the heads. You may want to check that.
Best,
Kelly