Product Summary

  • Open Box
  • Item is in like-new condition. Original packaging may be damaged or missing. Please review the description for additional details
  • 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 #UP229386
BrandSpeedway Motors
Garage Sale TypeOpen Box
Rocker Arm Ratio1.3:1
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Need To Know

Ineligible for Return

Contains items that cannot be returned

Speedway Motors UP229386 Details

Garage Sale Product

This is Garage Sale priced because it is an open box item and returned. PART IS BLUE NOT PURPLE, STILL FUNCTIONS AS NORMAL.

NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

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.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Speedway Motors UP229386 Specifications

KEY SPECS
MFG. Part #UP229386
BrandSpeedway Motors
Garage Sale TypeOpen Box
Rocker Arm Ratio1.3:1
GENERAL
Stud Diameter0.38"

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