Speedway SBC Camshaft Break-In Roller Rocker Arms, 1.3:1, 3/8 Stud
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Please note the following about this product:
- This item is sold as a set.
Q & A (4)
What's in the Box
Probably one of the best kept secrets...the best engine builders use break-in roller rocker arms. With the extreme valve spring pressures racers use today, the initial run time can kill a camshaft in the first minute of running.
The big time engine builders use these 1.3:1 ratio rockers to allow a run-in time for the camshaft, then the 1.3:1 rockers are removed and the normal rockers are reinstalled and the engine is ready to race or dyno.
Polylocks are included.