Ran a set of the speedmaster in my 73 Duster for a year and half, bracket raced the car also. Cam was a Hughes 3037 with l.6 rockers on Stock eddy heads and springs. The engine is now on an engine stand awaiting its next assignment. I pulled several rockers off and everything looks good.
Only thing I found wrong was the bolts were too long for the Eddy heads, so I used a different set of hold down and bolts.
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