One of my customers wants to get a set of heads upgraded to 2.055 or 2.08 valves and ported soo he had a set of bare Speedmaster heads drop shipped here. I warned him that I can’t eat 200-300.00 of labor on a set like I did last winter and he understood. So I started on them today and the first one I grabbed to drill landed on my inspection table and the guides were checked and were perfect. I drilled it and threw the second head on my inspection table and the guides on it were perfect too so I went ahead and drilled it for tubing. After that I hones the holes, cut the 17/32 and 9/16 tubing and epoxied them in the first head. I laid out both intake and exhaust gasket and then checked my Harland Sharp rocker shaft on both heads. Being I had Vic’s Edelbrock heads here waiting for valves I threw one up on my bench. The shaft fits very tightly in the radius of the Edelbrock head and there’s a little slop in the Speedmaster heads. I grabbed my feeler gauges and without bolting the shaft down and pushing it to the far side I’m getting.005-.006. So technically I don’t think enough to bother anything. Especially being I didn’t have them bolted down with the hold-downs. Someone posted the other day about the ragged casting in the oil drainback holes on the Edelbrock. Here’s a picture of a nice casting. Day of for church, a trip to Harbor Freight (65 miles) some football and some pork, kelby, and Kraut. Hopefully Monday and Tuesday I will have this head roughed in before Vic’s valves get here then back on his heads.
