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#91511768
Speedway SBC Camshaft Break-In Roller Rocker Arms, 1.3:1, 3/8 Stud
10 Reviews
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6 Questions
- One of the best kept secrets
- Initial run times can kill a camshaft in the first minutes
- Break-in rocker arms ease extreme valve spring pressures
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$275.99
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$299.99
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Product Summary
Chevy Small Block V8
- One of the best kept secrets
- Initial run times can kill a camshaft in the first minutes
- Break-in rocker arms ease extreme valve spring pressures
- These rockers use a 1.3 ratio to allow a run-in time for the camshaft
- Engine is then race - street ready or ready for the dyno
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Key Specs
MFG. Part # | 91511768 |
Brand | Speedway Motors |
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Speedway Motors 91511768 Details
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.
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
Speedway Motors 91511768 Specifications
Speedway Motors 91511768 Specifications
KEY SPECS | |
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MFG. Part # | 91511768 |
Brand | Speedway Motors |