Hughesengines engines does do the work for you. I don’t know if they sell the rods to close off the pushrod holes. You can purchase them done from Hughesengines. Doing it yourself just requires an aluminum rod to plug the pushrod hole. It was discussed here at one point. I used to have a source of the aluminum rods saved. Somewhere, I screwed up and lost it. I’d like to get it again.
The above mention to the ported heads is not a write up but a video which you can get for free just by signing up at “Motor Trend on Demand.” They have a 14 day free trial. Steve used an epoxy mixed with aluminum shavings to fill the pushrod holes. He did some porting and then says in the video his buddy Brice finished it up. Brice is a non available person these days.
But! Since you can port a head, your on your way.
All I can say is when you move the pushrod over, think twice, work the head once. Realize the amount of offset you will need for the rocker arm. There are (and we’re) various offset rocker arms made (& discontinued) for various SBM heads. Hughes currently uses a .350 off set on there rocker arms that are used with there offset pushrod head. The only other currently made offset rocker arm I know of is the Harland Sharp W-2/5 or maybe Jesel or TD have something.
