906 heads and 740+ NA horsepower?
I had to pull the 906 "boat anchor" heads from the shelf yesterday and strip them, so I thought I might as well take some pictures of them as we had no pictures from years before. In 2011 we used them in a Mopar Muscle Magazine dyno contest at Comp Cams and they have been sitting lonely on the shelf since then.
We called them the "boat anchors" because we had gotten more flow from them in earlier years.......tried some other things on them.......and lost flow. Threw them on the junk pile and called them "boat anchors".
When the dyno contest came up they were still the best flowing iron heads we had at the time (since then too it turns out) so we hauled them out of the scrap pile and dressed them up.
We are doing another set of less intense 906 heads now and we thought we might be able to use these for reference while doing the new 906's.
Anyway, here are the "boat anchors" that at one time went 748 HP on a 500" wedge.
I had to pull the 906 "boat anchor" heads from the shelf yesterday and strip them, so I thought I might as well take some pictures of them as we had no pictures from years before. In 2011 we used them in a Mopar Muscle Magazine dyno contest at Comp Cams and they have been sitting lonely on the shelf since then.
We called them the "boat anchors" because we had gotten more flow from them in earlier years.......tried some other things on them.......and lost flow. Threw them on the junk pile and called them "boat anchors".
When the dyno contest came up they were still the best flowing iron heads we had at the time (since then too it turns out) so we hauled them out of the scrap pile and dressed them up.
We are doing another set of less intense 906 heads now and we thought we might be able to use these for reference while doing the new 906's.
Anyway, here are the "boat anchors" that at one time went 748 HP on a 500" wedge.
